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    26

















    Followers
    Row, row, row, yet another boat
    by Graham93 ๐Ÿ‡ฌ๐Ÿ‡ง ( Lieutenant Commander)
    ๐Ÿ“ฃ










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    33 Posts 350 Comments 43 Photos 358 Likes
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    ๐Ÿ“ Entertainment for Bionic Bill
    4 days ago by Graham93 ( Lieutenant Commander)
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    Having provided Bill with a radio in the dinghy, I thought it would be fun to make it work.

    A search of the Web turned up an FM radio kit for ยฃ1.50 plus ยฃ1 postage. I don't understand how they can make these for so little. It included a battery holder for 2 AA batteries, a headphone jack, and five pushbuttons for controlling the tuning, volume and on/off. I didn't use any of these items, so they are now in my spares box in case they come in useful in the future. The remaining components were mounted onto the circuit board.

    Bill isn't able to control the radio in the dinghy as he has his hands full with the oars ๐Ÿ˜‰, so I decided I would have to do it for him remotely. An RC switch with 5 outputs was built using a PIC microprocessor. This is controlled from the three position toggle switch on my FlySky Tx using the pulse counting technique.
    Switch up and hold, tunes the radio frequency up.
    Switch down and hold tunes the radio frequency down
    Switch up, centre, up and hold increases the volume
    Switch down, centre, down and hold reduces the volume
    Switch up, centre, up, centre, up and hold turns the radio on or off

    Although larger, an Arduino could be used to provide this sort of functionality.

    Also on the RC switch circuit board is a 3.3v BEC to power the radio and an audio amplifier.

    The speaker is 22mm diameter. Unmounted there is little sound to be heard from it so I mounted it into one end of a 25mm acrylic tube. The tube is filled with cotton wool and the other end sealed off with an acrylic disc. The volume that can be achieved is quite surprising for such a small speaker and while the quality of the sound isn't great, it is only intended to provide low level background sound.
    radio
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    ๐Ÿ’ฌ Re: Entertainment for Bionic Bill
    4 days ago by jbkiwi ( Vice Admiral)
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    What can you say?! that's just too much!๐Ÿ˜ now all he needs is Mrs Bill in the back seat!๐Ÿ˜‚
    Nice one yet again Graham.
    JB
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    ๐Ÿ’ฌ Re: Entertainment for Bionic Bill
    4 days ago by Newby7 ( Sub-Lieutenant)
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    Hands free radio wonderful maybe it's a future Mrs. Bill in the ride along.
    Rick
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    ๐Ÿ’ฌ Re: Entertainment for Bionic Bill
    4 days ago by Martin555 ( Fleet Admiral)
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    Awesome Graham,
    I am certain this is without a doubt a definite prize winner.
    It is impossible to top what you have done so far except make steam come off his cup of coffee LOL!!!

    I also think Bill is extremely happy without a Mrs Bill.

    Martin555.
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    ๐Ÿ’ฌ Re: Entertainment for Bionic Bill
    4 days ago by mturpin013 ( Captain)
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    Hi there Graham, "I don't understand how they can make these for so little".
    Unfortunately I think it may well be slave labour. I am also guilty of buying cheap electronics, as I think most of us are, we are on holiday at the moment we have a touring caravan and last night the remote control for the awning lights packed in, I ordered a replacement yesterday evening and I picked "them" yes 2 in a pack this evening and for just ยฃ6, its 2 new hand sets and 2 receivers.
    On the sort of plus side if we all stopped buying these things what would happen to these poorly paid workers, Its there government that needs a kick up the backside.
    sorry rant over
    Michael
    PS I like the radio
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    ๐Ÿ’ฌ Re: Entertainment for Bionic Bill
    4 days ago by robbob ( Commodore)
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    Excellent work Graham, is there nothing you can't integrate into this?
    But I can't help thinking that a selection of Sea Shanty's or music of a nautical nature might be more appropriate....so how about incorporating a small 'media player' circuit that reads a micro SD card with some .mp3's on it.
    Now that would be a challenge.....wouldn't it ?
    Tongue firmly in cheek !!!
    Rob.
    https://www.ebay.co.uk/i/303316211178?chn=ps&norover=1&mkevt=1&mkrid=710-134428-41853-0&mkcid=2&itemid=303316211178&targetid=908661474856&device=c&mktype=pla&googleloc=1007037&poi=&campaignid=10195651586&mkgroupid=107296210212&rlsatarget=pla-908661474856&abcId=1145987&merchantid=110850726&gclid=EAIaIQobChMI4ZCO-ZmH6wIVWOvtCh2XYwtKEAQYDCABEgJg4fD_BwE
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    ๐Ÿ’ฌ Re: Entertainment for Bionic Bill
    4 days ago by MouldBuilder ( Captain)
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    Superb Graham. This little dingy must draw a crowd. Super video.
    Peter.๐Ÿ‘๐Ÿ‘
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    ๐Ÿ’ฌ Re: Entertainment for Bionic Bill
    4 days ago by marky ( Captain)
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    Superb Graham, playing radio Caroline๐Ÿ˜.
    Cheers Marky
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    ๐Ÿ’ฌ Re: Entertainment for Bionic Bill
    4 days ago by peterd ( Chief Petty Officer 1st Class)
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    Brilliant.
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    ๐Ÿ’ฌ Re: Entertainment for Bionic Bill
    3 days ago by Graham93 ( Lieutenant Commander)
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    Hi All,

    Thank you for the positive comments/likes and suggestions. ๐Ÿ‘

    Iโ€™m working on some more extras for Bill ๐Ÿ˜€
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    ๐Ÿ’ฌ Re: Entertainment for Bionic Bill
    3 days ago by Graham93 ( Lieutenant Commander)
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    Rob,

    Glad you like it. Sea Shantyโ€™s - now thereโ€™s an idea I like. It looks like those little MP3 players can work with the same 5 button interface I have for the FM radio, so they could be just a simple plug in replacement.๐Ÿ‘ ๐Ÿค”

    Graham93
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    ๐Ÿ’ฌ Re: Entertainment for Bionic Bill
    3 days ago by Graham93 ( Lieutenant Commander)
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    Martin,

    โ€œmake steam come off his cup of coffeeโ€

    Now you are just taking the ...... ๐Ÿ˜‚๐Ÿ˜†

    Graham93
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    ๐Ÿ’ฌ Re: Entertainment for Bionic Bill
    3 days ago by robbob ( Commodore)
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    Hi Graham.
    I thought you might like that ๐Ÿ˜‰
    Here's a UK seller on eBay for the same module....
    Rob.
    https://www.ebay.co.uk/itm/DFplayer-Mini-MP3-Player-Module-For-Arduino-UNO-Module-Music-Audio-Voice-Board/263899839783?_trkparms=aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D228436%26meid%3D2a02de5f44f84197af4c93198b55c767%26pid%3D100005%26rk%3D5%26rkt%3D12%26mehot%3Dpf%26sd%3D153603621759%26itm%3D263899839783%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3DSimplAMLv5PairwiseWebWithBBEV1Filter&_trksid=p2047675.c100005.m1851
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    ๐Ÿ’ฌ Re: Entertainment for Bionic Bill
    3 days ago by jbkiwi ( Vice Admiral)
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    Don't encourage him Martin! If Graham puts any more gadgets in there, Bill will have a 'hearty' trying to row it ๐Ÿ˜‚
    JB
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    ๐Ÿ’ฌ Re: Entertainment for Bionic Bill
    3 days ago by Graham93 ( Lieutenant Commander)
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    I need lots of encouragement JB. The more crazy ideas the better. ๐Ÿ˜‚๐Ÿคฃ
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    ๐Ÿ’ฌ Re: Entertainment for Bionic Bill
    3 days ago by Graham93 ( Lieutenant Commander)
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    Thanks Peter,

    Not so much a crowd in these strange times. The lake is in a public park in the centre of Buxton and itโ€™s busy on Sunday mornings with lots of visitors taking a socially distanced stroll. Many of them stop to watch Bill rowing, and get their phones out to video him. Brightens up their morning ๐Ÿ˜€

    Graham93
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    ๐Ÿ“ Demo mode
    20 days ago by Graham93 ( Lieutenant Commander)
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    Having returned to the hobby last year and with lockdown this year, I haven't had many opportunities to visit model boat shows. However, when I have been to a show, I always felt that the models on display that were 'doing something' were the most interesting. Lights on, smoke from the funnel, rotating radars, etc just help to bring the model to life. I have thought about how to achieve this with my Crash Tender, but with a standard receiver with 10 separate channel outputs it isn't easy. However, the rowing boat is a different proposition.

    The rowing boat uses a receiver with a single PPM output rather than the usual separate PWM outputs to individual servos. The PPM signal is carried on a single wire between the receiver and the rowing controller. There are eight channels carried as a series of sequential timing pulses along the single wire. Only three channels are currently used for the rowing boat, speed, turning and head movement.

    I have put together a PIC based 'demo adapter' which fits between the receiver and the rowing controller. When the rowing boat is switched on, the adapter checks for a PPM signal from the receiver. If the signal is present, indicating that the transmitter is switched on, then the adapter goes into idle mode and simply lets the receiver signal pass to the rowing controller as normal. However, if no signal is detected from the receiver, (i.e. transmitter switched off) then the adapter takes over and sends a PPM signal to the controller. A lookup table in the adapter adjusts the PPM signal over time to simulate changes in transmitter stick positions, hence operating the dinghy as though it was being remotely controlled.

    The video shows the boat being switched on using the magnetic on/off switch, with the transmitter off. After a few seconds, Bionic Bill starts rowing, turning and looking left and right. The program runs for about 3 minutes, and then loops back to the start and repeats.

    If I ever get the opportunity to take Bill to a show, I can simply leave him on the bench to row all day.
    Demo
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    ๐Ÿ’ฌ Re: Demo mode
    20 days ago by robbob ( Commodore)
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    What an excellent little addition to the boat and perfect for demonstrating the rowing action.
    Let's hope that you get a chance to exhibit it somewhere.
    Not sure what's happening with the International Model Boat show at Warwick this year but that would be a great place to show it. Perhaps the organisers could offer you a private display stand if your club is not exhibiting ?
    Worth looking into?
    I go every year and I'd love to see Bill 'in the bionic flesh'
    Rob.
    https://www.meridienneexhibitions.co.uk/events/international-model-boat-show
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    ๐Ÿ’ฌ Re: Demo mode
    20 days ago by Martin555 ( Fleet Admiral)
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    That is an excellent little gadget Graham.
    Perfect for the shows.
    Also just to use it to make sure that Bionic Bill remembers what to do LOL!!!

    Martin555.
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    ๐Ÿ’ฌ Re: Demo mode
    20 days ago by Graham93 ( Lieutenant Commander)
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    Thanks Rob,

    I did go to the Warwick show last year, for the first time. Who knows if it will take place, and what form it will take, this year? Iโ€™ll wait for their decision, which will be mid-September apparently.

    Graham93
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    ๐Ÿ’ฌ Re: Demo mode
    20 days ago by Graham93 ( Lieutenant Commander)
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    Martin,

    Shows, what shows? โ˜น๏ธ

    However you are right, I hadnโ€™t thought about it making a good exercise machine for Bill to keep him fit before the next fishing trip. LOL

    Graham93
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    ๐Ÿ’ฌ Re: Demo mode
    20 days ago by jbkiwi ( Vice Admiral)
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    Brilliant bit of kit Graham!, certainly eliminates needing the TX on for hours problem. Just a thought,- if he was at a show demonstrating rowing all day, would he be allowed lunch and tea breaks as per Seamans' Union rules๐Ÿ˜?
    JB
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    ๐Ÿ’ฌ Re: Demo mode
    20 days ago by mturpin013 ( Captain)
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    I thought I was having trouble stopping my build always adding bits, but you now take that prize
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    ๐Ÿ’ฌ Re: Demo mode
    20 days ago by figtree7nts ( Vice Admiral)
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    Amazing, Now that's skills!
    And Bionic Bill looks great Too! LOL!

    Cheers, Ed
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    ๐Ÿ’ฌ Re: Demo mode
    20 days ago by Graham93 ( Lieutenant Commander)
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    JB,

    Iโ€™m sure I can program breaks into the sequence, but getting him to open the bottle for lunch, now that would be a challenge!

    Graham93
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    ๐Ÿ’ฌ Re: Demo mode
    20 days ago by Graham93 ( Lieutenant Commander)
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    Michael,

    Plenty more to come........ just watch this space ๐Ÿ˜‰
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    ๐Ÿ’ฌ Re: Demo mode
    20 days ago by Graham93 ( Lieutenant Commander)
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    Thanks Ed, glad you like it ๐Ÿ‘

    Graham93
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    ๐Ÿ’ฌ Re: Demo mode
    20 days ago by RNinMunich ( Fleet Admiral)
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    "Plenty more to come........ just watch this space ๐Ÿ˜‰ "
    It's not 'this space' but space in the boat I'll be watching Graham๐Ÿ˜ฎ๐Ÿ˜‰
    Open the bottle for lunch or doing anything else for that matter, your main problem will be mechanical; getting Bill to let go of the oars and then grab them again to come home!!
    Muchas head scratching!
    ๐Ÿ˜Ž
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    ๐Ÿ“ Lunch
    26 days ago by Graham93 ( Lieutenant Commander)
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    Following suggestions from Colin, and from Doug, I took pity on Bionic Bill and made him some lunch before his next trip out.

    The flask is made from a short length of 12mm acrylic tube and bits of plasticard. The 'sandwiches' are a block of wood wrapped in foil - sorry Bill, not very tasty ๐Ÿคฃ.

    The bottle was a challenge. I hadn't been able to find one at the right scale, so used another piece of acrylic tube. One end was plugged with a length of acrylic rod and then turned on the lathe to produce the bottle neck. The bottle was then part filled with alcohol from the base before a piece of clear acrylic was glued on to seal it. The full sized bottle label was photographed and reduced to 1/6th scale before printing onto a self adhesive label.

    Apples were moulded from 'polymorph' - a plastic which becomes like plasticene when heated but sets hard when cooled. (Useful for making moulds).

    I considered making a cool box, but decided a wooden crate would look better, and was easier to make.

    While I was making lunch, I also decided to spoil Bill and give him a radio to row by. Made from plasticard based on a 'Roberts' design, with a photographically reduced control panel. The telescopic aerial is brass tubing in two diameters. It doesn't actually work ...... yet ๐Ÿ˜
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    ๐Ÿ’ฌ Re: Lunch
    26 days ago by Martin555 ( Fleet Admiral)
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    I really love all these little details Graham,

    Martin555.
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    ๐Ÿ’ฌ Re: Lunch
    26 days ago by Graham93 ( Lieutenant Commander)
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    Thanks Martin, itโ€™s what makes it fun, and brings it to life.๐Ÿ‘

    Graham93
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    ๐Ÿ’ฌ Re: Lunch
    26 days ago by RNinMunich ( Fleet Admiral)
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    Excellent stuff Graham๐Ÿ‘
    (Except for the choice of whisky. I'd have gone for Jura Superstition single malt meself๐Ÿ˜‹๐Ÿ˜‹)
    Good idea with the crate๐Ÿ‘ In a cool box all the provisions would be hidden so rather boring!
    Like the radio, reminds me of one my parents in law had many years ago.
    I guess you're gonna hide a titchy MP3 player and speaker somewhere next!?๐Ÿ˜ฎ
    Playing "Little green apples"? ๐Ÿ˜
    Cheers, Doug ๐Ÿ˜Ž
    O.C. Smith - Little Green Apples
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    ๐Ÿ’ฌ Re: Lunch
    26 days ago by Colin H ( Commodore)
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    Your really spoiling him. I hope he appreciates your efforts as much as we do.
    Cheers Colin.
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    ๐Ÿ’ฌ Re: Lunch
    26 days ago by Graham93 ( Lieutenant Commander)
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    Thanks Doug.

    The plan is full FM broadcast radio receiver, with on/off, tuning and volume all controlled from a single switched Tx channel. Donโ€™t think I can get Bill to turn the receiver knobs ๐Ÿ˜‰. Just waiting on a delivery from China.

    Graham93
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    ๐Ÿ’ฌ Re: Lunch
    26 days ago by RNinMunich ( Fleet Admiral)
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    Sounds logical Graham๐Ÿ‘
    Given the mini VC tuner modules and preset tuning available, Why not?๐Ÿ˜
    An IC amp tacked on the end and away you go.
    Look forward to hearing that.๐Ÿ™Š
    Be especially interested in how you do the speaker installation in an open boat๐Ÿ˜ฎ
    Cheers, Doug ๐Ÿ˜Ž
    THINKS!๐Ÿค•
    If you made one of the old radios with push button preselection maybe you could get Bill (or his girlfriend/fishing mate) to push the buttons? ๐Ÿ˜๐Ÿ˜€
    THINKS 2! If you made Bill a nice BIG BOOMBOX / GHETTOBLASTER it would be easier to fit a decent size speaker ๐Ÿ™‰
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    ๐Ÿ’ฌ Re: Lunch
    26 days ago by SeamanCook ( Petty Officer 1st Class)
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    I love this. I was a single sculler at University and held the record as the only single sculler never to fall in. Not due to ability, just cowardice. What happens if Bill catches a crab?
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    ๐Ÿ’ฌ Re: Lunch
    26 days ago by Newby7 ( Sub-Lieutenant)
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    The music will it play row row your boat.
    Rick
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    ๐Ÿ’ฌ Re: Lunch
    26 days ago by Martin555 ( Fleet Admiral)
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    Brilliant Rick.
    That did make me laugh.

    Martin555.
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    ๐Ÿ’ฌ Re: Lunch
    26 days ago by mturpin013 ( Captain)
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    Brilliant Graham
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    ๐Ÿ’ฌ Re: Lunch
    26 days ago by Graham93 ( Lieutenant Commander)
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    Rick,

    Love that suggestion ๐Ÿ‘. Got me thinking now ๐Ÿค”

    Graham93
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    ๐Ÿ’ฌ Re: Lunch
    26 days ago by Graham93 ( Lieutenant Commander)
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    Hi SC

    โ€œWhat happens if Bill catches a crab?โ€

    Thereโ€™s no crabs in the Pavillion Gardens boating lake LOL ๐Ÿ˜‚๐Ÿคฃ

    Seriously, the oars are firmly attached to the servos, and Bionic Bill is firmly attached to the thwart, so I donโ€™t think there would be much impact if he โ€˜catches a crabโ€™

    Graham93
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    ๐Ÿ’ฌ Re: Lunch
    26 days ago by RNinMunich ( Fleet Admiral)
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    View Video
    ๐Ÿ˜
    https://www.youtube.com/watch?v=eakOxM8AWHg

    Meanwhile ... back at the MP3 player ๐Ÿ˜Ž
    Or are you going to give him a TV with a 2" LC display?
    Wouldn't put it past you Graham๐Ÿ‘
    Got a mini LCD UHF TV I bought in Kuwait airport about 30 years ago if you need some parts!
    Tuner, LCD driver etc ...
    ๐Ÿ˜Ž
    https://www.youtube.com/watch?v=eakOxM8AWHg
    ๐Ÿ”—
    Row Row Row Your Boat Gently Down The Stream | Nursery Rhyme And Kids Song
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    ๐Ÿ’ฌ Re: Lunch
    26 days ago by RNinMunich ( Fleet Admiral)
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    "Thereโ€™s no crabs in the Pavillion Gardens boating lake LOL ๐Ÿ˜‚๐Ÿคฃ"
    AS FAR AS YOU KNOW GRAHAM!!๐Ÿ˜ฎ๐Ÿ˜
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    ๐Ÿ’ฌ Re: Lunch
    26 days ago by Joe727 ( Lieutenant Commander)
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    Looks like a classic transistor radio! Very nice details, I must ask..... Do you ever sleep?
    Joe๐Ÿ˜Ž
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    ๐Ÿ’ฌ Re: Lunch
    26 days ago by Rookysailor ( Captain)
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    Definitely or maybe no crabs in the Pavilion gardens boating lake Doug, the locals have had them all, you must have heard of a Buxton crab sandwich....๐Ÿ˜

    Cheers, Pete
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    ๐Ÿ’ฌ Re: Lunch
    26 days ago by RNinMunich ( Fleet Admiral)
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    Of COURSE I have Pete,๐Ÿ˜‰
    There's even a recipe for it on BBC Good Food๐Ÿ˜‹๐Ÿ˜œ
    https://www.bbcgoodfood.com/recipes/best-ever-crab-sandwiche...
    ๐Ÿ˜Ž
    THINKS: Add a few crab pots to Bills equipment Graham, and a modified Fish-finder.
    Or maybe a hi-res side scan sonar would be more effective!?๐Ÿ™„
    https://www.bbcgoodfood.com/recipes/best-ever-crab-sandwiches
    ๐Ÿ”—
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    ๐Ÿ’ฌ Re: Lunch
    25 days ago by MouldBuilder ( Captain)
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    Just keeps getting better. Love the flask and the radio.
    Peter.
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    ๐Ÿ“ Sundayโ€™s fishing trip
    27 days ago by Graham93 ( Lieutenant Commander)
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    View Video
    Phil from Buxton MBC made a video of Bionic Billโ€™s first outing and has posted it in the media area of this website. Iโ€™ve copied the link here to keep it attached to the blog.

    Many thanks from me to Phil for the excellent video.
    RC Sailing :- "Bionic Bill"
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    ๐Ÿ’ฌ Re: Sundayโ€™s fishing trip
    27 days ago by peterd ( Chief Petty Officer 1st Class)
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    Poor bloke must be exhausted.
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    ๐Ÿ’ฌ Re: Sundayโ€™s fishing trip
    27 days ago by robbob ( Commodore)
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    Good to see Bill putting his back into it ๐Ÿ‘๐Ÿ˜€!
    A fantastic model Graham....and the video 'aint bad either..good work Phil ๐Ÿ‘
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    ๐Ÿ’ฌ Re: Sundayโ€™s fishing trip
    27 days ago by Newby7 ( Sub-Lieutenant)
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    What a great looking boat and a wonderful video.
    Rick
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    ๐Ÿ’ฌ Re: Sundayโ€™s fishing trip
    27 days ago by Colin H ( Commodore)
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    If he keeps rowing at that pace he could enter the solo Atlantic challenge (to scale of course).
    Great video of a fantastic model, you have done a great job with it, keep it up.
    Cheers Colin.
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    ๐Ÿ’ฌ Re: Sundayโ€™s fishing trip
    27 days ago by jbkiwi ( Vice Admiral)
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    Great video of a very clever model! certainly one to treasure and add to your library Graham.
    Also thanks to Phil for giving us such a fantastic 'ducks eye' view!
    JB
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    ๐Ÿ’ฌ Re: Sundayโ€™s fishing trip
    27 days ago by Martin555 ( Fleet Admiral)
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    Absolutely brilliant Graham,
    Also a big thank you to Phil for a very nice video.
    Thank you both i thoroughly enjoyed the build log and the video.

    Martin555.
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    ๐Ÿ’ฌ Re: Sundayโ€™s fishing trip
    26 days ago by Skydive130 ( Commander)
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    Love it, congrats on a fine build ๐Ÿ‘
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    ๐Ÿ’ฌ Re: Sundayโ€™s fishing trip
    25 days ago by MouldBuilder ( Captain)
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    Super video.
    You really have made a fantastic job of this build Graham. Very clever and realistic.
    Peter.
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    ๐Ÿ“ Fishing Trip
    29 days ago by Graham93 ( Lieutenant Commander)
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    Bionic Bill went on a fishing trip this morning. He didn't catch any fish๐Ÿ‘Ž

    It works!!! With little adjustment Bill was off round the lake. He spent over an hour rowing up and down the lake and there was still plenty of power left in the battery. Not sure if his arms will ever recover though ๐Ÿ™„.

    It is such a relief, and a surprise, that it worked first time. I was expecting it to take several attempts modifying and adjusting things before it would work reasonably. There are a few things that need some attention, but they are minor. One oar is slightly lower than the other, so needs the trim adjusting, and I think it might look better with a longer stroke length. Yesterday I modified the controller to stretch the servo signal to the head turn servo so that there is more rotation. That has worked in one direction, but there is a software fault when he turns the other way which makes it look like he has a stiff neck ๐Ÿ˜‰. Other than that, and the lack of lunch on-board, it went well.

    There was much interest from fellow modelers at the lakeside and from the public. Many stopped (at a distance) to ask about the model and how it worked.

    Phil from Buxton MBC took lots of video footage so I hope we will have a much better video available before long.
    Fishing
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    ๐Ÿ’ฌ Re: Fishing Trip
    29 days ago by Colin H ( Commodore)
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    Nicely done โœ”, I wish I had been with him, he looks so cool.
    Cheers Colin.
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    ๐Ÿ’ฌ Re: Fishing Trip
    29 days ago by ianed57 ( Midshipman)
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    Congratulations - he looks really convincing and I imagine you are very pleased and relieved that all your planning and hard work has paid off.

    Ian
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    ๐Ÿ’ฌ Re: Fishing Trip
    29 days ago by jbkiwi ( Vice Admiral)
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    Absolutely brilliant!. Well done Graham, you must be stoked!. Nothing better than for a model of any type to work as designed first time out (especially one with lots of mechanical technology involved). Would have loved to have been there to see it.๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘ Perhaps he could row down to NZ for a demo? (he won't catch anything down here๐Ÿ˜- apart from fish that is) You should make him a Mrs Bill to navigate, ie shout words of encouragement (or another 3 letter word starting with n)๐Ÿ˜‚
    JB
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    ๐Ÿ’ฌ Re: Fishing Trip
    29 days ago by philcaretaker ( Midshipman)
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    A Great success Graham, - you should be very proud !.
    I was more than pleased to witness Bills great stamina and determination to go round the lake !. Thanks for giving me the opportunity to video your "lock down" achievement.
    Some great footage - I will Msg you when edit is complete.
    cheers
    Phil๐Ÿ‘๐Ÿ˜๐Ÿ˜๐Ÿ˜๐Ÿ˜๐Ÿ˜ Just can`t stop smiling ๐Ÿ˜Š๐Ÿ˜Š๐Ÿ˜Š๐Ÿ˜Š
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    ๐Ÿ’ฌ Re: Fishing Trip
    29 days ago by Martin555 ( Fleet Admiral)
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    Well what can i say Graham.
    I have followed this build log and have thoroughly enjoyed every bit of it.
    And the icing on the cake was to see Bionic Bill doing his thing.
    He did not disappoint.
    I really admire your skills of which you have many and hope to see many more in the fullness of time.
    Once again extremely well done.

    Martin555.
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    ๐Ÿ’ฌ Re: Fishing Trip
    29 days ago by Newby7 ( Sub-Lieutenant)
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    Well done looks good on the water.
    Rick
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    ๐Ÿ’ฌ Re: Fishing Trip
    29 days ago by Nerys ( Commodore)
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    So pleased Bionic Bill has been for a nice row. He deserves it after all this time. I'm sure you are well pleased that he worked so well with so few adjustments to be made. Well done all round, Bill is a credit to you.

    Cheers, Nerys
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    ๐Ÿ’ฌ Re: Fishing Trip
    28 days ago by Graham93 ( Lieutenant Commander)
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    Thanks everyone for the nice comments and the congratulations. I am well pleased with the end result. Way better than I was expecting. Trouble is, today is such an anti-climax.๐Ÿ˜Œ I'm sitting here thinking, what do I do now? The grass needs cutting, the hedges need trimming, I might even find some decorating to do, but none of that will be half as interesting.

    Graham93
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    ๐Ÿ’ฌ Re: Fishing Trip
    28 days ago by Graham93 ( Lieutenant Commander)
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    Phil,

    "Thanks for giving me the opportunity to video your "lock down" achievement. Some great footage - I will Msg you when edit is complete."

    Take your time with the video. I know you will do a great job with the editing. There must be a lot of clips to work through so don't rush it.

    Hope you are still smiling, I know I am ๐Ÿ˜

    Graham93
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    ๐Ÿ’ฌ Re: Fishing Trip
    28 days ago by Martin555 ( Fleet Admiral)
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    Hi Graham,
    Ref :- The grass needs cutting, the hedges need trimming, I might even find some decorating to do.

    Well while you are doing that you need to think how can i top that LOL!!
    It will be difficult as your skills are second to none.

    I think the only thing you can do is think of a boat/ship that you have always wanted to make, but it will have to be quite a challenging build as i think you will get bored of making something that us mortals can make.LOL!!

    Martin555.
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    ๐Ÿ’ฌ Re: Fishing Trip
    28 days ago by RNinMunich ( Fleet Admiral)
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    How about the Flip Ship Graham?
    Should be a stroll in the park for you๐Ÿ˜‰
    https://en.wikipedia.org/wiki/RP_FLIP

    ๐Ÿ˜Ž
    https://en.wikipedia.org/wiki/RP_FLIP
    ๐Ÿ”—
    https://www.youtube.com/watch?v=azZIcoPI_CU
    ๐Ÿ”—
    Flip Action Roll
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    ๐Ÿ’ฌ Re: Fishing Trip
    28 days ago by Scratchbuilder ( Midshipman)
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    Absolutely brilliant.
    Looks really good on the water.
    Regards Bill
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    ๐Ÿ’ฌ Re: Fishing Trip
    28 days ago by Newby7 ( Sub-Lieutenant)
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    Let the fishing begin. Good work it is great when we get to see the fruits of our labor.
    Rick
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    ๐Ÿ’ฌ Re: Fishing Trip
    28 days ago by RNinMunich ( Fleet Admiral)
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    "He didn't catch any fish๐Ÿ‘Ž"
    Not surprised Graham๐Ÿ˜
    You didn't give the poor bloke a chance to sling 'is 'ook!๐Ÿค”
    All rowing and no fishing makes Bill a dull boy๐Ÿ˜
    Or was he simply so enthusiastic cos IT ACTUALLY WOIKED that he forgot what he went out there for!?
    A great achievement Graham, Hat Off๐Ÿ‘๐Ÿ‘๐Ÿ‘
    Apropos oars:
    Suggest you trim the higher one to match the lower.
    That may also even out the thrust to stop/reduce what looks like a slight bias to starboard.
    But as you say, some trimming and fine tuning needed.
    If you're gonna make him work harder, longer stroke etc, then he'll definitely need some sustenance on board. At least a few cans of Red Bull!๐Ÿ˜
    BRAVO ZULU that man.
    Cheers, Doug ๐Ÿ˜Ž
    PS will we be seeing him in next years Oxford vs Cambridge boat race?๐Ÿ˜‰
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    ๐Ÿ’ฌ Re: Fishing Trip
    28 days ago by MouldBuilder ( Captain)
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    Absolutely fantastic Graham. You really have done something special. We`ll all want one now.๐Ÿ˜€
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    ๐Ÿ’ฌ Re: Fishing Trip
    27 days ago by Joe727 ( Lieutenant Commander)
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    Does Bionic Bill have his proper Fishing License? He looks so real I suspect that the Game Warden will insist on one!
    Joe๐Ÿ˜
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    ๐Ÿ“ Tackle
    30 days ago by Graham93 ( Lieutenant Commander)
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    As Bionic Bill is hoping to go fishing tomorrow, he has loaded up the dinghy with some of his tackle. ๐Ÿ˜

    (I've been making bits and pieces to go in the dinghy over the past few months.)

    The anchor is made from plasticard. The chain links are copper wire. The rope was 'aged' using woodstain.

    The boathook is brass, turned on the lathe to a taper. The shaft was hand carved from an offcut of the timber used for the dinghy flooring.

    The fishing rod is made from the smallest diameter garden cane I could find in the shed. The loops are bent from thin stainless steel wire and bound to the cane with black thread. Thin cork sheet was glued to the cane to form the handle. The reel was fabricated from plasticard and painted. It is wound with real fishing line. The float is a short length of plastic rod painted black and red. The weights are lead shot.

    The landing net frame is painted brass rod. It is fitted to a handle carved from oak. The netting was found in my wife's fabric drawer.๐Ÿ˜Š

    The paddle is carved from an oddment of timber, I think it might be beech.

    My favorite item is the bucket. It is made from a 2" plantpot. Black plasticard was added round the top to produce the rim. The handle is made from a length of copper wire from an electric cable which was painted to look like galvanised steel. The grip is part of the original black insulation which I left in place.
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    ๐Ÿ’ฌ Re: Tackle
    30 days ago by Colin H ( Commodore)
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    Don't forget the cool box for the beer and sandwiches.
    Cheers Colin.
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    ๐Ÿ’ฌ Re: Tackle
    30 days ago by jbkiwi ( Vice Admiral)
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    More clever stuff Graham! I think we will have to start checking for old English superlatives as I think we must have about run out of modern ones๐Ÿ˜‚
    JB
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    ๐Ÿ’ฌ Re: Tackle
    30 days ago by MouldBuilder ( Captain)
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    I must agree, the bucket is really good. I like the other items too. They all look realistic.
    This is a superb result. Good luck with the trials.
    Peter.
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    ๐Ÿ’ฌ Re: Tackle
    30 days ago by Graham93 ( Lieutenant Commander)
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    Colin,

    Bionic Bill had better have a good breakfast as I havenโ€™t had time to make his sandwiches ๐Ÿ˜ฎ Thatโ€™s one of the remaining tasks on the โ€˜to doโ€™ list.

    I hope he doesnโ€™t go on strike๐Ÿ˜‰
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    ๐Ÿ’ฌ Re: Tackle
    29 days ago by Martin555 ( Fleet Admiral)
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    It just keeps getting better and better.
    I really love the detail work.

    If Bionic Bill dose not perform properly he will make a lot of members very disappointed, so tell him not to let us down.LOL!!!!

    Martin555.
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    ๐Ÿ’ฌ Re: Tackle
    29 days ago by Graham93 ( Lieutenant Commander)
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    Thanks Martin,

    Bionic Bill didnโ€™t disappoint this morning.๐Ÿ‘๐Ÿ‘ More details to follow soon.

    Graham93
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    ๐Ÿ’ฌ Re: Tackle
    29 days ago by Graham93 ( Lieutenant Commander)
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    JB, Peter,

    Thanks for the great feedback, glad you like it. This build has helped keep me sane during lockdown, and the positive feedback Iโ€™ve received to this blog has been a large part of that.

    At least, I donโ€™t think Iโ€™ve lost too much of my sanity...?

    Graham93
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    ๐Ÿ“ Oars
    1 month ago by Graham93 ( Lieutenant Commander)
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    The oars are simply constructed using lengths of Ramin for the shafts and Mahogany pieces for the blades. My timber of choice for the shafts would have been Ash, but I didn't have any available so I used the Ramin I found in my wood stock. Ramin used to be a common timber at wood merchants and DIY stores, being the timber of choice for dowels and mouldings on account of it being straight grained and knot free. It is now CITES listed as endangered and it is difficult to find for sale. Mouldings etc are now usually made from pine or something similar and are generally of poor quality compared with those that used to be available.

    To reinforce the glued joint between the shafts and blades I skinned the blades with epoxy resin and fibreglass cloth. The brass collars that connect the oars to the rowlocks (described in an earlier post) were slid into place and glued/pinned to the oars.

    One issue which gave me a challenge with regard to the oars was how to stow them so that I can transport the dinghy to the lake. With the oars in place the dinghy is 1M long and 1M wide which makes it awkward to transport. I needed a simple means of being able to stow the oars for transport, and to quickly set them in place for rowing. Releasing the oars from the rowlocks did not give enough freedom of movement to stow them. The pushrods which connect to the up/down servos prevented the oars being swung round far enough to stow them. The solution was to attach the pushrods to the oars with a small brass angle bracket which is locked in place with a 3mm button head bolt. Loosening this bolt allows the oars to swing round sufficiently to stow them onboard. The oars are reinforced with a brass tube for the bolt to pass through.

    The oars attach to the rowlocks with a screwed pin that passes through the tube at the top of the brass collar fitted to each oar. The pin is threaded 2mm and screws into the rowlock arm. To prevent the pin working loose while rowing, a 1mm brass wire was formed to clip over the top of the rowlock once the pin has been hand tightened in place.

    As it has just stopped raining, I took a quick video of the completed dinghy with Bionic Bill rowing, turning, and rowing in reverse (just for you Robbob ๐Ÿ˜‰)
    Rowing2
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    ๐Ÿ’ฌ Re: Oars
    1 month ago by Martin555 ( Fleet Admiral)
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    Graham,
    Watching Bionic Bill having a practice run was a pure pleasure.

    I suppose Bill's younger brother Ben is standing by with the outboard motor LOL!!

    Martin555.
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    ๐Ÿ’ฌ Re: Oars
    1 month ago by Graham93 ( Lieutenant Commander)
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    Thanks Martin,

    Unfortunately Bill needed a transplant so Ben is now โ€˜armlessโ€™ and wonโ€™t be able to help.

    Hoping that we will have some fine weather without too much wind on Sunday... Fingers crossed.

    Graham93
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    ๐Ÿ’ฌ Re: Oars
    1 month ago by Martin555 ( Fleet Admiral)
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    Hi Graham,
    Ref:- Ben is now โ€˜armlessโ€™
    With you'r skills i am sure you will make his some prosthetic Arms so that he can help his brother LOL!!

    Martin555.
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    ๐Ÿ’ฌ Re: Oars
    1 month ago by Joe727 ( Lieutenant Commander)
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    Graham,
    Thank you for posting the video, I'm glad to see Bill is finally getting a workout. ๐Ÿ‘
    Joe
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    ๐Ÿ’ฌ Re: Oars
    1 month ago by robbob ( Commodore)
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    Hi Graham
    That looks so realistic, well done ๐Ÿ‘๐Ÿ‘
    Rob.
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    ๐Ÿ’ฌ Re: Oars
    1 month ago by mturpin013 ( Captain)
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    Should we be amazed? No!
    Its fantastic Graham, I think your decision to paint the hull has turned out to be the right one, there's enough polished wood inside to give the boat a realistic appearance. Your ingenuity has really been demonstrated in this project, something for prospective row boat builders to follow, we wait in anticipation for the maiden voyage.
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    ๐Ÿ’ฌ Re: Oars
    1 month ago by Graham93 ( Lieutenant Commander)
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    Thanks Rob,

    Having watched the video again, I think I need to add software to pulse stretch the output for the head turn servo so that it turns further left and right. Just when I thought it was finished. Thereโ€™s always something more to do ...๐Ÿ˜‰
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    ๐Ÿ’ฌ Re: Oars
    1 month ago by Graham93 ( Lieutenant Commander)
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    Thanks Michael, glad you like it. I was beginning to have doubts about the paint job, with so many advising against it, but it has worked out OK.

    Sunday is going to be an interesting day.

    Graham93
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    ๐Ÿ’ฌ Re: Oars
    1 month ago by Rookysailor ( Captain)
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    Excellent idea, first class build, beautifully finished craft, what more can one say๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘


    Cheers, Pete
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    ๐Ÿ’ฌ Re: Oars
    1 month ago by RNinMunich ( Fleet Admiral)
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    So far so very good Graham๐Ÿ‘
    Lovely work on the oars and associated fittings๐Ÿ‘
    "Having watched the video again, I think I need to add software to pulse stretch the output for the head turn servo so that it turns further left and right. "
    After watching the vid I think you may need to do the same for the 'up / down' servos.
    The maiden will be the 'proof of the pudding', but I'm not sure that Bill is dipping his oars in deep enough for the full thrust effect.๐Ÿ˜ฎ
    Cheers, Doug ๐Ÿ˜Ž
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    ๐Ÿ’ฌ Re: Oars
    1 month ago by philcaretaker ( Midshipman)
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    Amazing Graham - looks like we are on for Sunday ? - YES !
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    ๐Ÿ’ฌ Re: Oars
    1 month ago by Graham93 ( Lieutenant Commander)
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    Thanks Doug,

    I can adjust the throw of the up/down servos at the lakeside using the โ€˜programming cardโ€™. That will let me set both how high they are lifted, and how low they dip. Until it is floating in the lake I canโ€™t really check if it is set up correctly. Too big to fit my test tank with the oars fitted.

    I can also adjust the stroke length for the oars, the amount of body rocking, how the static oar dips when turning, and a few other things like the low battery threshold.

    Graham93
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    ๐Ÿ’ฌ Re: Oars
    1 month ago by Colin H ( Commodore)
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    Absolutely stunning model, exceptional control, your genius shines like your woodwork.
    Well done and congrats on a superb model.
    Cheers Colin.
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    ๐Ÿ’ฌ Re: Oars
    1 month ago by Graham93 ( Lieutenant Commander)
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    Hi Phil,

    Yes, Sunday is looking ideal. I do hope you can help with a video of Billโ€™s maiden outing.

    I wonโ€™t be able to stay late as I have a better offer! My grandaughterโ€™s socially distanced 2nd birthday party๐Ÿ‘

    Graham93
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    ๐Ÿ’ฌ Re: Oars
    1 month ago by Graham93 ( Lieutenant Commander)
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    Thanks Colin, glad you like it. I just hope Bionic Bill is up to the task when he finally gets out on the lake.

    Graham93
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    ๐Ÿ’ฌ Re: Oars
    30 days ago by jbkiwi ( Vice Admiral)
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    Everything that they've all said ++ Bloody brilliant Graham๐Ÿ‘๐Ÿ‘๐Ÿ‘ - even if it never touched the water A piece of interactive artwork !
    JB
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    ๐Ÿ’ฌ Re: Oars
    30 days ago by MouldBuilder ( Captain)
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    Stunning. Rowing backwards as well. Love the video.
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    ๐Ÿ“ Controller
    1 month ago by Graham93 ( Lieutenant Commander)
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    Between coats of paint/epoxy/varnish I was able to complete development of the rowing controller. Development of this started in September 2019 and has taken until this week to complete. I estimate I have spent 500 hours working on the software, mostly in the evenings while sat in front of the TV with nothing worth watching. The software was developed on a windows laptop and is then loaded into the controller. Work on constructing the dinghy did not start until April, when I had Bionic Bill rowing in a test rig in order to prove the concept. I didn't want to start on the woodwork until I was confident there was a reasonable chance of success with the software.

    The block diagram shows the basic approach. There are 6 servos in all, two for each oar, one to rock the body back and forth during rowing, and one to turn the head. The receiver is a miniature FlySky FS-R2A unit which provides the received channel settings in a PPM format down a single wire. This is fed into the controller where it is decoded to provide remote control of the rowing action.

    The controller is based on a PIC 16f microprocessor. The software is written in assembler code. The power and capability of these modern microchips is staggering. When I left Uni and started work in 1973, I worked on programming a PDP 11/20 minicomputer to control a metal turning lathe. That minicomputer was the size of a coffee table, weighed 50Kgs+ and cost ยฃ10,000 (in 1973!) It had less functionality, power and performance than the microchip used in this rower, which is the size of a fingernail, weighs 2g and cost less than ยฃ4.

    Three channels are used from the received signal, Ch1 for steering (rudder), Ch3 for speed (throttle) and Ch4 for the head turning. Three more channels from the transmitter, Ch2, Ch5, and Ch6 are also decoded and provided as spare outputs from the controller with standard PWM format (1-2mS).

    The controller generates the rowing action by producing standard PWM control signals to the two pairs of servos attached to each oar. By generating PWM control signals for the servos that sweep through the range from 1mSec to 2mSec, the oars can be made to move through a predefined cycle to simulate rowing. The rate at which a servo is swept from one end of it's travel to the other determines the speed of rowing. This sweep rate is controlled by the Ch3 (throttle) input from the transmitter. Similarly, the range of movement of each oar is adjusted based in input from the Transmitter Ch1 (rudder). For example, pushing the transmitter stick to the right, to request a turn to starboard, results in the stroke length of the starboard oar being reduced and the action of the Port oar produces the requested turn. With maximum turn requested, the starboard oar stops all movement.

    As the rowing speed increases, so does the oar stroke length. To improve the realism of the action, the servo installed inside Bionic Bill also starts to rock the body back and forth. This helps keep his hands on the oars.

    The receiver used does not have any capability to send telemetry back to the transmitter, so it is not possible to get the battery charge status displayed. Not wanting to find bionic Bill stranded in the middle of the lake, the controller monitors the battery voltage and when the charge level drops below a threshold, Bill starts shaking his head from side to side as though to say 'enough, no more - bring me back in!' ๐Ÿ˜† I hope this proves to be reliable in practice. When not indicating that the battery is running low, the head can be turned at will using the transmitter joystick.

    With Bill rowing on the test rig it became clear that there were many settings which would likely need to be adjusted to the start and end points of each servo movement in order to obtain a realistic rowing action and to have it balanced between port and starboard oars. Initially all these settings were values stored in the program on the laptop which could be changed and then re-loaded into the controller however I did not see this as a realistic option at the lakeside. Reluctantly I decided to develop a programming card, similar in concept to the units available for some ESCs, which allows adjustment of the parameters. This took as long to develop as the rest of the controller, but now it is working, I think the effort will prove to have been worthwhile.
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    ๐Ÿ’ฌ Re: Controller
    1 month ago by robbob ( Commodore)
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    Hi Graham.
    Superbly engineered in all respects.
    I'm very envious of your range of skills which clearly include cabinet making, precision model making, and both electronic and software engineering ๐Ÿ‘๐Ÿ‘
    Can we see a video of Bill doing his thing please? ๐Ÿค“
    Keep up the great work.
    Rob.
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    ๐Ÿ’ฌ Re: Controller
    1 month ago by marky ( Captain)
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    Bills aged a bit since that photo Graham .
    Cheers Marky๐Ÿ‘
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    ๐Ÿ’ฌ Re: Controller
    1 month ago by Graham93 ( Lieutenant Commander)
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    Hi Marky,

    Thatโ€™s Billโ€™s younger brother, Ben ๐Ÿ˜‚๐Ÿคฃ

    Graham93
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    ๐Ÿ’ฌ Re: Controller
    1 month ago by Graham93 ( Lieutenant Commander)
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    Thanks Rob,

    I like to turn my hand to anything practical, and 40+ years working in the electronics/software industry helps.

    Graham93
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    ๐Ÿ’ฌ Re: Controller
    1 month ago by Martin555 ( Fleet Admiral)
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    Excellent work yet again Graham.
    Your skills have no end.
    Well done.

    Martin555.
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    ๐Ÿ’ฌ Re: Controller
    1 month ago by Rookysailor ( Captain)
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    What a terrific talent you have Graham, such talent
    is not often seen these days, what club do you sail at?
    I have a niece who lives in Macclesfield, will have to visit her on one of your sailing days.๐Ÿ˜Š

    Cheers, Pete
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    ๐Ÿ’ฌ Re: Controller
    1 month ago by Graham93 ( Lieutenant Commander)
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    Thanks Pete,

    I currently sail with two clubs with very different waters. Buxton MBC use the boating lake at the Pavillion Gardens which is ideal for the dinghy as there is access all the way round if Bill should drift off out of control. We sail Sunday and Thursday mornings.

    Graham93
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    ๐Ÿ’ฌ Re: Controller
    30 days ago by jbkiwi ( Vice Admiral)
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    This is looking like a work of electronics art as well!
    JB
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    ๐Ÿ“ Painting
    1 month ago by Graham93 ( Lieutenant Commander)
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    The outside of the hull was painted with a white gloss rattle can over the previously applied grey primer. The name, ordered on-line as a self adhesive vinyl decal, was applied to the transom and then several spray coats of silk lacquer were applied to seal the decal and finish the outer hull.

    A mooring bitt was carved and bolted to the fore deck. All the hex recesses in the visible fixing bolts were filled with epoxy and the heads then painted with gunmetal grey to give them the appearance of coach bolt heads.

    All the remaining bare timber was given two coats of thinned epoxy resin rubbing down between coats where access was possible. Once fully hardened, this was then over coated with brush applied satin yacht varnish to take the shine off the surface. This finish has brought out the colour and grain of the exposed timbers which is what I was aiming for.

    Finally all the brass components were cleaned and polished and dip coated with metal lacquer.
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    ๐Ÿ’ฌ Re: Painting
    1 month ago by Martin555 ( Fleet Admiral)
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    She looks absolutely fantastic.
    Bionic Bill is a very lucky guy.

    Martin555.
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    ๐Ÿ’ฌ Re: Painting
    1 month ago by philcaretaker ( Midshipman)
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    Great job Graham - when is the lazy git going to start rowing ?
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    ๐Ÿ’ฌ Re: Painting
    1 month ago by Graham93 ( Lieutenant Commander)
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    Thanks Martin,

    I just hope Bill is up to the task. The suspense of not knowing if this is going to work after all this time is getting unbearable.๐Ÿคž

    Graham93
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    ๐Ÿ’ฌ Re: Painting
    1 month ago by Graham93 ( Lieutenant Commander)
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    Thanks Phil, not long now. The painting has slowed things down having to wait for each coat to dry and harden. Now that is over with, just need to make the oars and then assemble it all.

    Graham93
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    ๐Ÿ’ฌ Re: Painting
    1 month ago by mturpin013 ( Captain)
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    Great job Graham, Its put a lot of thoughts in my head for a future project so its on the list of jobs to do but before that I have a steam boiler to construct for my steam launch and a commission piece to start soon. I'm looking forward to seeing it in action as I suppose most of the site members are, role on the end of lock-down so we can get back to sailing. I particularly like the name you've given the boat, very apt considering the the mechanics and electronics you've made to create what for a lot of none modellers will appear to be a simple action of rowing a boat, little do they know what it takes
    well done
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    ๐Ÿ’ฌ Re: Painting
    1 month ago by RNinMunich ( Fleet Admiral)
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    'First class ticket holders only please!'๐Ÿ˜ฎ
    โ˜€๏ธโ˜€๏ธโ˜€๏ธ
    Great name ๐Ÿ‘
    ๐Ÿ˜Ž
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    ๐Ÿ’ฌ Re: Painting
    1 month ago by Colin H ( Commodore)
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    Thats a mighty fine example of the model makers art. Bionic bill has such luxury, if he fails I would love to take his place.
    Fabulous, keep it up shipmate.
    Cheers Colin.
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    ๐Ÿ’ฌ Re: Painting
    1 month ago by marky ( Captain)
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    Brilliant Graham, a true work of art .
    Cheers Marky๐Ÿ‘
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    ๐Ÿ’ฌ Re: Painting
    1 month ago by Graham93 ( Lieutenant Commander)
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    Thanks Michael.

    More details on the electronic controller coming up soon.

    Several local clubs have started sailing again, all suitably socially distanced of course. Bionic Bill will have to make sure he keeps his distance when he gets down to the lake.๐Ÿ˜‚๐Ÿคฃ

    Hope you are planning a blog on your next projects. I learnt so much from your Crash Tender build.

    Graham93
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    ๐Ÿ’ฌ Re: Painting
    1 month ago by Graham93 ( Lieutenant Commander)
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    Colin,

    Thank you. However, you will need shrinking to 1/6th scale if you want to take over from Bionic Bill ๐Ÿ˜‰

    Graham93
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    ๐Ÿ’ฌ Re: Painting
    1 month ago by Graham93 ( Lieutenant Commander)
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    Thanks Doug.

    Glad you like the name but I canโ€™t claim the credit for that. I was struggling for a good idea and my wife came up with that as a suggestion. ๐Ÿ‘

    Graham93
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    ๐Ÿ’ฌ Re: Painting
    1 month ago by robbob ( Commodore)
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    I think your decision to paint the hull and varnish the interior, despite some serious coercion, was a good call ๐Ÿ‘.
    The varnish really brings out all that is good and the natural character of quality wood.
    And I think the name is an appropriate choice too.
    I hope all the mechanics and electronics go in OK ๐Ÿคž.
    Rob.
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    ๐Ÿ’ฌ Re: Painting
    1 month ago by RNinMunich ( Fleet Admiral)
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    Well done the Missus๐Ÿ‘
    I like a 'suggestive' lady with a sense of humour!๐Ÿ˜‰๐Ÿ˜ฎ

    Looking forward to your controller detail - AND the vid of the trials.
    Cheers, Doug ๐Ÿ˜Ž
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    ๐Ÿ’ฌ Re: Painting
    1 month ago by Martin555 ( Fleet Admiral)
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    Graham,
    Just tell Bionic Bill that if he proves to you that he is giving you a 100% effort then you will get him an outboard motor LOL!!

    Martin555.
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    ๐Ÿ’ฌ Re: Painting
    30 days ago by jbkiwi ( Vice Admiral)
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    Looks beautiful Graham, a real credit to your abilities,
    JB
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    ๐Ÿ“ Battery and Power switching
    1 month ago by Graham93 ( Lieutenant Commander)
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    While I'm waiting for the paint and varnish on the hull to dry, time to get on with some other details.

    Having checked the waterline, some ballast towards the stern would be an advantage so I bought four 3700mAh NiMh cells to make up a battery. These will provide the extra ballast as well as having a good capacity to keep Bionic Bill rowing. I decided to make up a battery from loose cells so that I could fit them either side of the keel. The cells came with tags fitted so it was a simple task to solder them together and then insulate them with heatshrink.

    Based on experience, when buying heatshrink it is easy to buy the wrong size.๐Ÿ™„ The cells I bought have a diameter of 23mm. This equates to a circumference of 23 x pi or approx 72mm. Heatshrink is sold flat and in specified widths. 40mm heatshrink gives a tube with a circumference of 80mm, and so is suitable for these cells. If I had bought 30mm heatshrink, thinking it was big enough for a 23mm dia cell, I would have been disappointed.

    I had several ideas for how to hide the on/off switch for the dinghy. In the end I've settled on using a latching relay, actuated by two magnetic reed switches. The two switches will be hidden below the floorboards and actuated with a loose magnet which I will need to keep safe somewhere. Bringing the magnet close to one of the reed switches for an instant powers one of the relay coils an turns the power on. Bringing the magnet close to the other reed switch powers the second coil in the relay and turns the power off. Reed switches are quite delicate so I will be encapsulating these in plastic tubes before fitting them in the dinghy.
    Battery
    โ–ถ๏ธ
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    ๐Ÿ’ฌ Re: Battery and Power switching
    1 month ago by robbob ( Commodore)
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    Hi Graham.
    That's a very neat solution for 'invisible switching' ๐Ÿ‘๐Ÿ‘
    What are the relay contacts rated at?
    Rob.
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    ๐Ÿ’ฌ Re: Battery and Power switching
    1 month ago by Graham93 ( Lieutenant Commander)
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    Thanks Rob,

    The relay Iโ€™ve used has two sets of contacts rated at 30v DC 2A. Iโ€™ve wired them in parallel which will double the current carrying capacity, but not necessarily the switching capacity. (In general switch contacts can carry more current than they can switch).

    This relay will be fine for the dingy. The load current is relatively small, as there are only 6 servos + controller/receiver to power. No big drive motor.

    I used a latching relay in my Crash Tender for the ESC battery with contacts rated at 50A. That allowed me to use a miniature โ€˜centre offโ€™ toggle switch to turn the power on/off which was easier to hide. Would need to check the coil current rating before considering using reed switches for a big relay like that.

    Graham93
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    ๐Ÿ’ฌ Re: Battery and Power switching
    1 month ago by Julio ( Leading Seaman)
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    Hi:
    Do you have the electronic diagram of this circuit?
    Could you send it to me, please?
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    ๐Ÿ’ฌ Re: Battery and Power switching
    1 month ago by Graham93 ( Lieutenant Commander)
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    Hi Julio,

    Here is the circuit diagram for the latching relay circuit.

    Graham93
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