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    Graham93
    Member Stats
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    Member No.#5557
    Registered๐Ÿ“…5th Jun 2019
    Last Online๐Ÿ“…29th Sep 2020
    City๐Ÿ“Macclesfield
    Country๐Ÿ‡ฌ๐Ÿ‡งUnited Kingdom
    Genderโ™‚๏ธMale
    Age๐Ÿ‘ถNot Provided
    Posts๐Ÿ’ฌ433
    Followers๐Ÿ“ฃ5
    Likes Received๐Ÿ‘1487

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    Scullduggery
    Scratch built model rowing boat. Built during Covid19 lockdown from salvaged Oak and Mahogany. Propulsion by oars only. Two servos on each oar to provide the rowing action. Two channels used on the TX to control rowing - the equivalent of 'throttle' and 'rudder'. On board PIC microprocessor converts throttle and rudder commands into oar movements. Will row forwards and backwards as well as turning. The two figures are 'bionic' upgrades to Action Man. Bionic Bill the rower has two servos installed, one to provide forward/backward rocking syncronised with the rowing action. The second servo provides head rotation, controlled from the TX. His younger brother Ben has three servos installed to provide twisting of the body, arm raising and head turning. These are controlled from a second on board PIC to provide either the fishing rod control sequence or the smoking sequence. Smoke is produced from a smoke generator built from an e-cig and air pump. Accessories on board include fishing rod, landing net, bucket, lunch and radio. The radio plays a selection of sea shanties controlled from the TX. Build time - 6 months. Another YouTube video here: https://youtu.be/MReEIPmiZ1U
    34" Crash Tender
    Here is my Crash Tender together with the homemade 27MHz transmitter. Built in the early 1970s. The collage photo is from 45 years ago, sailing on the boating lake in Llanfairfechan, North Wales. Recently rescued from the garage covered in dust. Diesel replaced with brushless motor and on the water again. Now in dry dock for a major refit!
    Recent Posts
    ๐Ÿ’ฌ Re: Bringing Ben to 'life'
    7 days ago by Graham93 ( Commander)
    Flag
    Hi HMS,

    Glad you like it ๐Ÿ˜ Not sure what Iโ€™m going to try next. Taking a break while I consider the options. Have a few ideas in mind, but none of them involve oars ๐Ÿค”
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    ๐Ÿ’ฌ Re: The Lighting Circuits.
    18 days ago by Graham93 ( Commander)
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    Hi Rob,

    Very nicely engineered and described, as we have come to expect from you ๐Ÿ‘

    Just a thought, did you not consider using a multi-output RC switch rather than 3 separate ones? You could drive the three sets of lights off one 3 output switch and would only need one channel on the receiver - hopefully that would avoid the need for an RX upgrade to 10 channels.

    Graham93
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    ๐Ÿ’ฌ Re: "Fully Loaded"
    25 days ago by Graham93 ( Commander)
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    View Video
    Nerys,

    Iโ€™ve just been watching a few videos on YouTube. That would be quite a challenge!

    It would need two servos for the โ€˜figure of eightโ€™ movement, plus a third servo for the blade rotation. Connecting all those to the oar in a way that made it look like the oar was simply positioned in a notch in the transom would be difficult. Then there is the software to control the servos. Producing the basic rowing stroke wouldnโ€™t be too difficult but adapting the stroke to steer in response to โ€˜rudderโ€™ commands?? ๐Ÿค”

    I could manage getting the oarsman to smoke a pipe at the same time ๐Ÿ˜‚๐Ÿคฃ

    Graham93
    Sculling over the Stern
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    ๐Ÿ’ฌ Re: Scullduggery
    26 days ago by Graham93 ( Commander)
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    Thanks cj,

    Happy to provide advice if you do decide to have a go.

    Graham93
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    ๐Ÿ’ฌ Re: "Fully Loaded"
    27 days ago by Graham93 ( Commander)
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    Rick,

    It was a very tight squeeze in places. Some of the floorboards need a bit of pressure to get them seated properly๐Ÿ˜Š
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    ๐Ÿ’ฌ Re: Scullduggery
    27 days ago by Graham93 ( Commander)
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    Thanks Martin. The feedback, encouragement, and suggestions from the members here, including your good self, helped me to get it finished.

    Graham93
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    ๐Ÿ“ Scullduggery
    27 days ago by Graham93 ( Commander)
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    Scratch built model rowing boat. Built during Covid19 lockdown from salvaged Oak and Mahogany.

    Propulsion by oars only. Two servos on each oar to provide the rowing action. Two channels used on the TX to control rowing - the equivalent of 'throttle' and 'rudder'. On board PIC microprocessor converts throttle and rudder commands into oar movements. Will row forwards and backwards as well as turning.

    The two figures are 'bionic' upgrades to Action Man. Bionic Bill the rower has two servos installed, one to provide forward/backward rocking syncronised with the rowing action. The second servo provides head rotation, controlled from the TX. His younger brother Ben has three servos installed to provide twisting of the body, arm raising and head turning. These are controlled from a second on board PIC to provide either the fishing rod control sequence or the smoking sequence. Smoke is produced from a smoke generator built from an e-cig and air pump.

    Accessories on board include fishing rod, landing net, bucket, lunch and radio. The radio plays a selection of sea shanties controlled from the TX.

    Build time - 6 months.

    Another YouTube video here: https://youtu.be/MReEIPmiZ1U
    https://youtu.be/MReEIPmiZ1U
    ๐Ÿ”—
    https://model-boats.com/blogs/68795
    ๐Ÿ”—
    Fishing
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    ๐Ÿ’ฌ Re: Ben goes fishing
    27 days ago by Graham93 ( Commander)
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    Thanks Ken, glad you like it.

    Graham93
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    ๐Ÿ“ Promotion
    27 days ago by Graham93 ( Commander)
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    Congratulations to our new Commander - Joe. Another well deserved promotion.

    Graham93
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    ๐Ÿ’ฌ Re: "Fully Loaded"
    27 days ago by Graham93 ( Commander)
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    Thanks Cash, glad you like it

    Graham93
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    ๐Ÿ’ฌ Re: "Fully Loaded"
    27 days ago by Graham93 ( Commander)
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    Martin,

    โ€œYou will have to have two modes for Ben, Smoking mode and Fishing mode.โ€

    Ben does have those two modes when controlled by the TX. Ben is controlled from the vertical channel on the right stick on the TX. Switching the boat on with the stick at neutral selects โ€˜smoking modeโ€™. Switching it on with the stick held at minimum selects โ€˜fishing modeโ€™. Of course Ben has to put his pipe down and pick up the fishing rod for the appropriate mode - with some help!๐Ÿ˜†

    In demo mode, with the TX switched off, there isnโ€™t any way to choose which mode is to be active, so I think Iโ€™ll default it to smoke, as that is more entertaining.

    Graham93
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    ๐Ÿ’ฌ Re: "Fully Loaded"
    27 days ago by Graham93 ( Commander)
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    Thanks Doug,

    Hadnโ€™t realised I was so close to promotion ๐Ÿ‘ I donโ€™t really take much notice of the points.

    Donโ€™t know what Iโ€™m going to do next. I might take a break from modelling and get on with all the jobs which have been on hold for the past year while Iโ€™ve been building boats. There again, I do have a few thoughts.......

    Graham93
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    ๐Ÿ’ฌ Re: "Fully Loaded"
    27 days ago by Graham93 ( Commander)
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    Thanks Joe, really nice to know it brings back memories for you. I couldnโ€™t ask for more ๐Ÿ‘๐Ÿ˜€๐Ÿ‘
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    ๐Ÿ“ Promotion
    27 days ago by Graham93 ( Commander)
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    Congratulations Philcaretaker. Well deserved for all those great videos ๐Ÿ‘๐Ÿ‘

    Graham93
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    ๐Ÿ’ฌ Re: HARTLEY FLARELINE, NEW PROJECT
    28 days ago by Graham93 ( Commander)
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    JB

    Coming along nicely now. Really starting to look like a boat. At this rate sheโ€™ll be ready in time for the better weather over there.

    Graham93
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    ๐Ÿ’ฌ Re: "Fully Loaded"
    28 days ago by Graham93 ( Commander)
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    Doug,

    โ€œSuch juicy 'feed lines' are simply irresistible ๐Ÿ˜โ€

    Iโ€™m glad it keeps you entertained..๐Ÿ˜‚๐Ÿคฃ
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    ๐Ÿ’ฌ Re: "Fully Loaded"
    28 days ago by Graham93 ( Commander)
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    Thanks JB,

    I was surprised this morning when I weighed it as I wasnโ€™t expecting the addition of Ben to have increased it so much. Thinking back, the original weigh in was without Ben, the e-cig, air pump, sound system, speaker, lunch, and a few other bits and pieces, so I guess I shouldnโ€™t be surprised.

    It already has an autonomous demo mode, without the TX switched on, although it is only intended to operate โ€˜on the benchโ€™. Goodness knows where it would end up on the lake as there isnโ€™t any Nav system built in. Iโ€™ve just realised that the demo module doesnโ€™t trigger Ben into action. I thought Iโ€™d finished! ... another software upgrade needed ๐Ÿ™„
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    ๐Ÿ’ฌ Re: "Fully Loaded"
    28 days ago by Graham93 ( Commander)
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    Thanks Martin,

    โ€œI noticed Ben's brain on the floor perhaps that is why he smokes LOL!!โ€

    You could be right ๐Ÿ˜†. There was no way I could fit it in his head, and it would have been constantly in the smoke stream there in any case. ๐Ÿ˜ฎ I wanted to fit it in his abdomen, as that would have made the connections tidier, but there wasnโ€™t room for it there, so it ended up under the floor.
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    ๐Ÿ“ "Fully Loaded"
    28 days ago by Graham93 ( Commander)
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    A couple of days ago, JBkiwi commented that the dinghy was "fully loaded" so I decided to weigh it again.

    The original plan for a full size version of the dinghy quotes a fully loaded weight of 700kgs. At 1/6th scale that equates to a target of 3.24kgs. Last time I weighed it, it came in at less than 3Kgs. Now everything is installed, the total weight is 4.2Kgs.Somewhat over the target weight, but it looks fine on the water. (I knew Ben needed to loose some weight !๐Ÿ˜‚)

    Now that everything is installed, I've included a photo showing all the internal fittings. Access to everything is relatively straightforward as it is all spread out flat, under the floorboards. The maximum clearance under the floor is 30mm and much less than that under most of it.
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    ๐Ÿ’ฌ Re: Radio Upgrade
    28 days ago by Graham93 ( Commander)
    Flag
    Yes Rob, I well remember Thunderbirds. One of my favorites when I was a youngster.๐Ÿ‘

    I think if there was a discussion going on between Bill and Ben then there would need to be some sync with their movements, otherwise it would be confusing as to who was talking. I've been thinking about it all afternoon, while I was out and about ๐Ÿค”. No need for strings though ๐Ÿ˜‰

    Graham93
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    ๐Ÿ’ฌ Re: Radio Upgrade
    28 days ago by Graham93 ( Commander)
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    Thanks Rick

    There are currently 10 songs on the play list including ROW, ROW, ROW YOUR BOAT. It kicks in at around 3:00 in the video clip. Plenty of room for more.
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    ๐Ÿ’ฌ Re: Bringing Ben to 'life'
    28 days ago by Graham93 ( Commander)
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    Doug,

    The development board I use is no longer available from Microchip. They have moved on over the past 15 years since I bought it.

    The attached link is to what looks to be their current development offering for 8 bit processors. Somewhat more capable than the one I have ๐Ÿ˜‰

    Graham93
    https://www.microchip.com/Developmenttools/ProductDetails/DM164137
    ๐Ÿ”—
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    ๐Ÿ’ฌ Re: Radio Upgrade
    29 days ago by Graham93 ( Commander)
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    Rob,

    Stop it ! ๐Ÿ˜ Does your imagination have no bounds? LOL๐Ÿ˜‚๐Ÿคฃ

    It would be relatively easy to do. Any sound recording can be loaded onto the memory card. Synchronising their movements to the voices would be tricky though - lip Sync?! Perhaps they could have an argument and start throwing things..... ๐Ÿ™„. ๐Ÿ˜‚๐Ÿคฃ
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    ๐Ÿ’ฌ Re: Radio Upgrade
    29 days ago by Graham93 ( Commander)
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    Hi Martin,

    You could be right. I hadnโ€™t noticed that, but Iโ€™ve just had another look.๐Ÿ˜†
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    ๐Ÿ“ Radio Upgrade
    29 days ago by Graham93 ( Commander)
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    No, not the RC gear, but Bill and Ben's on-board entertainment system. ๐Ÿ˜†

    The original installation used an FM radio and 22mm speaker hidden below the floorboards of the dinghy. Control from a switched channel on the Transmitter allowed it to be turned on/off, tuned to different stations and the volume to be adjusted. It worked well in the workshop but was not effective out on the lake. It was difficult to hear and difficult to control. So, time for an upgrade.

    The first issue to address was the speaker. There is no room under the floorboards for a larger speaker, but with a bit of thought I was able to fit a decent sized speaker under the foredeck. The speaker is mounted on a plywood panel which can be juggled into place past the forward frame. A block of foam rubber under the foredeck presses on the back of the speaker and holds the ply mount up against the frame. With this upgrade there was enough volume to hear the radio out on the lake.

    However, many of the radio stations were barely audible owing to poor reception caused by the FM aerial also being below the floorboards. This meant that the aerial was at or below the water level. Not a good position for an aerial ๐Ÿค” There wasn't a simple solution to this one, as I didn't want anything sticking up in the air. I did consider adapting the fishing rod, but decided against it. Finally, the radio doesn't retain it's settings when switched off which compounded the difficulties by requiring the radio to be tuned in each time it was switched on.

    Time for a rethink. RobBob suggested an MP3 player. I had been looking at these devices for a while, with a view to building a sound unit for the Crash Tender, so time to give it a try. These tiny units are widely available, at very modest cost. The part number is WTV020-16. Putting that into Google will bring up lots of vendors. They are often described as MP3 players, which they are not! What is meant by that description is that they have controls for on/off, next/previous track and volume up/down like an MP3 player (which they don't). They do not play MP3 audio files. They play audio files in an ADPCM format known as .AD4. Fortunately, it is easy to convert MP3 or WAV files into the AD4 format using a free downloaded application on the PC The audio files are stored on a micro SD card which can be loaded from the PC.

    The documentation available for these players is very poor. That is compounded by having several different types of these players available which work in different ways and it isn't always clear which one is being offered for sale. They are specified to operate from a 3.3V supply, although mine needs 3.45V to get it going! After many hours of frustration, and one fried micro SD card, I finally got it to work. Having got it working, it has so far been very reliable and simple to operate.

    It connects directly to the speaker and has an adequate volume level without the need for a separate amplifier. An RC switch with three outputs allows selection of next/previous track and on/off. The volume up/down inputs don't work as described in the documentation, but that hasn't been a problem.

    The end result is that Bill and Ben now have a selection of Sea Shanties to listen to while out on the lake. ๐Ÿ‘๐Ÿ˜Š
    Shanties
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    ๐Ÿ’ฌ Re: Music to Row by
    29 days ago by Graham93 ( Commander)
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    Thanks Cash, Peter,

    Glad you like it. It's been great fun to build. Not sure what I'm going to do now it's complete ...
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    ๐Ÿ’ฌ Re: Music to Row by
    29 days ago by Graham93 ( Commander)
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    ๐Ÿ˜‚๐Ÿคฃ๐Ÿ‘
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    ๐Ÿ“ Promotion
    30 days ago by Graham93 ( Commander)
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    Congratulations Rear Admiral Nerys๐Ÿ‘๐Ÿ˜๐Ÿ‘

    Graham93
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    ๐Ÿ“ Music to Row by
    1 month ago by Graham93 ( Commander)
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    Bionic Bill was out rowing on the lake again this morning. He had his 'radio' on ๐Ÿ˜€. Certainly drew a crowd.๐Ÿ‘

    Graham93
    Shanties
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    ๐Ÿ’ฌ Re: Bringing Ben to 'life'
    1 month ago by Graham93 ( Commander)
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    Doug,

    Microchip, the company that make the PIC microcontrollers have lots of help and support available on their website. After all they want people to buy their products ๐Ÿ˜‰

    They offer free development software, and reasonably priced development/demo boards. I started with one of their development boards about 15 years ago. It's much easier that way. Starting from scratch with just a chip would be a significant challenge. These chips are very flexible in terms of what they can do, but with the flexibility comes complexity. The more options there are to configure, the easier it is to get something wrong. On occasion, it has taken me a couple of days to work out what was wrong, and why something wouldn't work like I wanted it to.

    It's very rewarding when it does work, and very frustrating when it doesn't

    Graham93
    https://www.microchip.com/design-centers/8-bit/pic-mcus/get-started-now
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