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>> Home > Tags > rx

rx
rx
Proximity (Hall effect) sensor wiring by RNinMunich Fleet Admiral!   Posted: 14 days ago
Absolutely Steve 👍 Alternative is to make a holder for the magnet to prevent it getting knocked off by weeds etc. Also agree that any Failsafe' circuits must have an independent power supply. Place to put the switch, or latching relay, is definitely in place of the little slide switch usually supplied on the ESC. Just checked on some of my ESCs, Graupner and mTroniks, the red lead to the switch is NOT connected to the red lead supplying the RX and servos via the built in BEC. Guess the switch just triggers an FET switch inside the ESC. So the normal 500mA limit of reed switches will be enough. If a latching relay is used make sure the pull-in current is less than 500mA. Have fun All, cheers, Doug 😎 Eric; which sub is your mate building? I have a Type 1A U-Boat dynamic diver, speed and planes only, and a kit for an Akula 2 which will be a static diver, with tank etc.

aeronaut classic by RNinMunich Fleet Admiral!   Posted: 15 days ago
Hi Simon, I used the lacquer on the blue and white as well. It 'flattened' the paint and made it real hard and smooth 😊 The whole time consuming but satisfying process is described in incredibly boring 😉 detail in my blog- 'Jessica - Sea Scout restoration' (or was it renovation ??😲 Go easy with the lacquer on top of the varnish, not too heavy in one coat, or it may cause hairline surface cracks as it dries due to surface tension. 😡 Motor is a Propdrive 2832, 1000kV driving a 35mm 3 blade brass prop from Raboesch. Running on a 3S Lipo using a Quicrun 30A ESC and Turnigy iA6 RX. Pic attached of 'Engine Room'. Link attached to videos of the sea trials in May this year, Ostpark Lake and Biergarten, Munich. https://youtu.be/b0BWJ3duzDw https://youtu.be/zPgYicA0yGw She's 24" LoA with an all up weight of about 1.5kg. BTW: the lacquer is also supposed to be UV resistant! 😉 All the best, Doug 😎 PS Here the link to my Sea Scout Build Blog https://model-boats.com/builds/view/28209

Sanding done by RNinMunich Fleet Admiral!   Posted: 25 days ago
Hi Steve, many real IMM rod antennas I worked with were not tapered. So any metal / plastic rod of suitable diameter painted white would do. The relatively short (1m) whips are not always tapered either. If you go piano wire & heatshrink you could put a nice sweep-back into it by lightly bending it back while shrinking. When cool it will hold the shape. Here's a link to the supplier we most often used for the professional 'stick' (we called 'em rod) VHF IMM antenna, with a drawing. http://www.aas.de/special-antennas/vhf-tx- style='background-color:yellow;'>rx-antennas/104-staisf.html Memory playing tricks on me🤔it's actually about 141cm top to bottom. Cheers, Doug 😎 Here's a simple 35" stainless steel whip, also not tapered https://www.ebay.com/itm/Auto-Marine-Band-Antenna-35in-VHF-C...

All hooked up, nowt happens... by RNinMunich Fleet Admiral!   Posted: 25 days ago
That sounds good Martin.👍 So all you need to do now is be a bit quick on the trigger at the weekend. Shove it forward as soon as you hear the first beep, then switch the ESC OFF. Then power everything down (RX then TX) and when you switch on again all should be hunky-dory. The Lone Ranger rides again 😉 Cheers, Doug

RX500 receiver or replacement by woody Chief Petty Officer   Posted: 26 days ago
Thanks for the info. Alex

RX500 receiver or replacement by RNinMunich Fleet Admiral!   Posted: 26 days ago
Hi Woody, any other 2.4Gig RX that is FHSS-1 compatible; Frequency Hopping Spread Spectrum. You should be able to get precise info from the distributor here Service@globalhobby.net www.globalhobby.com Or from Sanwa. Cheers, Doug 😎

Sanding done by RNinMunich Fleet Admiral!   Posted: 26 days ago
Hi Steve, for the 'white stick', the VHF IMM band antenna, any old rod will do. The real ones are copper wire covered in glass fibre. Length of the real thing is about 107cm including the coaxial end feed connector at the bottom. They are usually mounted on a 'scaffold' type pole with two U clamps. On pleasure craft they are often just whip antennas approx 1m length, much much cheaper than the pro jobs 😉, with a dome shaped mounting and the antenna cable is fed into it through the deck/roof it is mounted on. Alternatively there is a side connector in the mount with an 'N' Type coaxial socket. Make a whip out of piano wire (with a ball on the top to protect your eyeballs!😆) and you could use it as your RX antenna - about the right length. Construction coming on nicely.👍 Cheers, Doug 😎

HMS BRAVE BORDERER by RHBaker Fleet Admiral!   Posted: 26 days ago
Doug, Am using the HobbyKing 50A Boat ESC 4A UBEC along with their programming card. The diode explanation makes sense so will fit one. jbkiwi My battery -ESC and ESC -motor wires are short, probably around 4" each. The addition of capacitors as suggested is intriguing as have never heard of it before. Think it is easier to keep things together in a boat, whereas with an aircraft pitch trim becomes a factor. Am using 2S batteries with a 50A ESC, with the motor max current of 30 A. Have you any idea what size of capacitor I should use? The Tx/Rx combinations are almost infinite as the ESCs are programmable too. Just wish the ice would go so can experiment! Thanks both for your help, with this hobby you never stop learning.

HMS BRAVE BORDERER by RHBaker Fleet Admiral!   Posted: 26 days ago
Thanks jbkiwi and RN in Munich for your suggestions: Have never used Ali Express, those components look interesting. Will follow up. I have used a battery alarm of the type suggested and it does work well. Have a couple for use once back on water. The rule about adding a capacitor into the ESC circuit is new to me. Have ferrite rings fitted so will now explore adding capacitors too. Are these is series or parallel with the wiring? The relays are not used with diodes or any electronic gubbins. Wanted to make the circuit as simple as possible for a Mechanical Engineer, so used one separate relay per ESC. The relay operation is controlled by a RC switch off another Rx channel. It seems to work. Am aware of the back feed possibilities and hope to have avoided them with the separate circuits. Appreciate any thoughts though, can add diodes if necessary. Am using a new FLYSKY 10 Ch. Tx/Rx on this model which opens up a host of programming opportunities. Am experimenting with various features such an the interval between Fwd/Rv also limiting ESC response. As am now using the brushless motors essentially in unison, also toying with controlling the 2 x ESCs on a “Y” lead on a single control. Much to think about, pity our winter has arrived early and the pond has been converted to a skating rink.

HMS BRAVE BORDERER by RHBaker Fleet Admiral!   Posted: 27 days ago
Finally the new brass propellers arrived, delayed about a month in one of Canada's regular postal disruptions. After minor modifications to the boss profile (the brass are more streamlined and thus longer than nylon) to give clearance with the rudder leading edges, they were easily installed. Could now refit the electrical equipment previously removed to get access to the shaft couplings. Inevitably took the opportunity to make “improvements”, so then could not get anything to work! After much frustration determined the problem was not from my improvements, but from the cheap and nasty slide switches provided with ESCs. These must have got damp during the test runs and corroded internally. Suggest when using these switches they be consigned to the garbage and replaced with proper toggle ones. Had decided to use the centre brushed motor/propeller for manoeuvring and low speed operation and then the outer brushless for high speed. Brushless ESCs do not modulate smoothly and motor operation is erratic. This was particularly evident when going from forward to reverse and vice versa. Using a lever control Tx, it was also easy to inadvertently operate the brushless control along with the brushed making the model response unpredictable. After some thinking, decided to insert a small relay into each of the white signal wires for the brushless motor ESCs. These relays would be controlled by a RC switch operated by another channel on the Rx. Hoping this way the brushless motors could be switched on and off whenever desired. The two relays would retain the ESCs as separate circuits and avoid any interference between them. The idea worked, can now operate the brushed motor confidently knowing the brushless will not be inadvertently triggered. This means low speed manoeuvers can be gently undertaken using the modulation and control ability of the brushless motors and, by selecting the auxiliary control, can add the high speed capability of the brushless. Am also hoping that when the Li-Pos trigger the low voltage cut-outs in the ESCs, this will retain a “get-home” facility on the brushed motor as that ESC operates independently. Much to look forward to when next on the water.

All hooked up, nowt happens... by RNinMunich Fleet Admiral!   Posted: 27 days ago
BTW Martin, going back to your original post- "Plugged tested (6.2 volts) Nimhs into Rx and it starts flashing ..." Did you check that the RX is Bound to the TX? E.g. by trying it with just a simple servo before messing with the ESC? Doug

All hooked up, nowt happens... by RNinMunich Fleet Admiral!   Posted: 27 days ago
Mornin' Martin, I've never used a trigger throttle (and never want to!) but I suspect that yanking back is Full throttle, which means you need to push it forward for programming!! Corresponding to stick back (or down) on a normal two stick set. Which is motor stop on such an aircraft ESC with no bacckuds. Cheers, Doug 😎 PS: just checked the manual for a typical Flysky Pistol Grip set (usual Chinglish gibberish🤔) but it confirms that trigger hard back is 'Full Ahead' !! BTW: since you appear to be using an aircraft ESC on a Car/Boat radio set (not a good idea!) make sure that before you switch on the RX that the throttle trigger is pushed right forward. Otherwise the motor will go off half cock straight away. If you release the trigger it will probably go to the 'Half Ahead' position. So mind your fingers.😡

All hooked up, nowt happens... by RNinMunich Fleet Admiral!   Posted: 29 days ago
Hi Haverlock, Good point! I took that as a 'given' since it is 'standard procedure' to stop servos and motors going uncontrolled wild. Rule for the RX is OLOF, On Last Off First. Cheers, Doug

All hooked up, nowt happens... by RNinMunich Fleet Admiral!   Posted: 29 days ago
Hi Martin, maybe! Maybe not! You might be lucky. Check the RX with just a servo plugged in somewhere. Then try setting up the ESC according to the instructions I sent. Basically all you have to do is tell it what type of battery you are using. Then it sets the correct 'Cut Off' voltage. BTW: since this is a 'One way only' ESC before you switch the system on make sure the throttle stick is pulled right back. Otherwise the motor will start up straight away. Mind yer fingas!! 😡 Also check that the throttle channel is not reversed at the TX - like most Futaba sets for some crazy reason - or again the motor will start up with the throttle pulled back. PDF: as Steve says; click on the Icon, then on [Download] in the top left corner. Windows should then offer you the choice of 'Open' or 'Save'. Click 'Save' and Windows will ask where you want to put the file. Cheers, Doug 😎

All hooked up, nowt happens... by Westquay Fleet Admiral!   Posted: 30 days ago
Doug, I did briefly connect both Rx battery and ESC to the Rx. Does that mean I've done summat bad? Also the pdf doesn't open. How can I do that? Cheers, Martin