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>> Home > Tags > circuit

No power by RNinMunich Fleet Admiral!   Posted: 2 days ago
Hi Nick, don't get upset, just slow down and try to be a little more accurate for us. Above all don't just plunge in with 'wild' experiments if you're not sure of the way forward. We are happy to help, and your problems are not insignificant, we all have some as we get older, but there's not much we can do if it is already too late due to 'wild' experiments🤔 Dave may well be right, after all this trial and error you may need to charge the battery again. That's why I asked if you have a simple voltmeter; a) to check the battery volts and b) if it is getting to the RX. Basic test engineering; #1: if it don't work has the circuit got volts? #2: If not why not ?? So, can you check the battery voltage please? Cheers Doug PS if possible (budget / 'er indoors or whatever) I can strongly recommend a simple cheap variable power supply to power such tests instead of having to rely on the battery from the boat. Let us know when you have the new battery and are charged up ready to go again. 👍😉

Flickering LED by RNinMunich Fleet Admiral!   Posted: 13 days ago
Yep! Quickest easiest way if the other LEDs work in the same circuit ...

Pathfinder by JRF1972 Petty Officer   Posted: 14 days ago
Pathfinder Scratchbuilt from Vic smeed Plans, working lights , on 2 circuits, engine sound units, radars,

R/C Gear by RNinMunich Fleet Admiral!   Posted: 16 days ago
Hi All, a good place to start for research on vintage RC kit is here / Site also includes some good 'reverse engineering' tips and circuits. Happy hunting 😎

Fairplay X - Plastic Magic! :-) by saintsalvio Commander   Posted: 20 days ago
I used the stack two motors; the circuits and the esc so as the control radio of the tiny submarine i got for the purpose; the weight was right to float correct by the waterline; you can see it on a video on my little Youtube channel (look at Salvatore Mazzarella ) rescuing a sunseeker predator yacht with many glamour ladies in the bathub. P.S. unfortunately I am still living at work!

The lighting circuits. by sandkb Admiral   Posted: 21 days ago
Very tidy work.

The lighting circuits. by robbob Fleet Admiral!   Posted: 30 days ago
I had previously made and tested the lighting pcb but I subsequently decided to modify it to take some 2 pin Molex connectors, they have the same hole spacing as the Veroboard PCB and are polarised and will make the final wiring a little easier and a lot neater too 👍 All the lighting wires were formed into colour coded twisted pairs and tacked in place within the wheelhouse with some epoxy and then overpainted black where they were conspicuous. The PCB is fixed to the bulkhead on PCB spacers and all the wiring retained by a cable tie on a self-adhesive base. The two Turnigy R/C controlled switches were mounted on a plasticard plate with double sided foam tape and then this plate secured to the bulkhead with a self tapping screw. The battery connections and common negative connection to the R/C receiver battery are on Molex connectors as well. The battery was fitted with XT60 connectors and secured to the keel with cable ties through some screwed eyelets. The port, starboard, forward blue and mast lights are on one switched circuit and the searchlight on a separate switched circuit. The searchlight also rotates on it's own servo channel. The result is a nice tidy installation which can easily be removed for servicing and modification if required 😎

12 volt motors to esc,s by Dave M Fleet Admiral!   Posted: 1 month ago
Hi Doug Know it well and used to build my own from a published circuit using now discontinued chip. Misleading for a dual set up possibly. If there is no switch provided the two switch wires can confuse some, like my friend. His wouldn't work with the BEC disconnected. It was a dual set up connected to an Action mixer. Has to use a separate rx battery to set up the rx before the ESC. It's 2.4 and takes longer than the ESC so doesn't provide the correct mid point for the ESC to find. By switching rx on first all is OK. Both ESCs have the red lead disconnected so are dead as are the motors until the switch is thrown. There is built in suppression in the BEC circuit which is not enabled in one ESC with your set up. On switch on the motor runs for half a second and I assume takes a big chunk of current. Using the switch gives better control and allows for each motor to switch on one at a time. If one set of wires are shorted and both ESCs wired thro a Y lead both motors will arm at the same time and might produce some unpredictable results. I agree its good to see Sonar is up and running and happy. Dave

Couplings by RNinMunich Fleet Admiral!   Posted: 1 month ago
So Boatshed, don't give up! The solution Dave mentions is very elegant nd simple 👍 Go to this page as Dave suggests, and follow the instructions for 'using single diodes'. Or the bridge version if you can't get the diodes easily. circuits attached as on above mentioned page. Cheers Doug 😎

Couplings by onetenor Commander   Posted: 2 months ago
Those circuit pics are small How do you couple up to the field coils or with a premag motor?

Couplings by RNinMunich Fleet Admiral!   Posted: 2 months ago
You betcha! Lovely smell though 👍 I'm still not convinced of this circuit. I'm trying it with a Graupner VR30. Guess I'll know in a few minutes, one way or another 😲😎

Couplings by RNinMunich Fleet Admiral!   Posted: 2 months ago
Hi Boatshed, I'm converting a Taycol Target but the principle is the same with Supermarine. Attached are the original Taycol diagrams for the Supermarine wiring, plus a wiring graphic, with circuit, of the mods for reversing it! You will need a bridge rectifier, BR, (or 4 single power diodes, see attached diagram) rated for at least 5 or 6 Amps. Essentially the DC outputs of the rectifier (+ & -) got to the brushes. The two AC connections (~ x2) go the the field coil. (I'm not yet convinced that this is the best way round!) Also, put two 4Amp fuses in series with the field coil and one brush connection. For suppression try a 0.1 microfarad non-polarised ceramic capacitor across the brush terminals. Otherwise the pyrotechnics at high revs are quite spectacular 😉 I assume that the ESC just controlled the speed without reversing? Good luck, let us know how you get on. Cheers Doug 😎 PS I'm about to test my reversing board, wish me luck, more later. 😁

Taycol Pt 3. New Brushes Pt1 by RNinMunich Fleet Admiral!   Posted: 2 months ago
Sometimes (often!) takes me a while to get started, but then - Don't get in the way! Since working outside (sanding etc) has just been nixed by the weather think I'll start on the reversing circuit. Cheers Doug 😎

Taycol Pt 3. New Brushes Pt1 by Dave M Fleet Admiral!   Posted: 2 months ago
Looks pretty good Doug. Brass & Bronze are always difficult to drill. Centre punch is essential and your miller would make a good drill press. I have a small drill press designed for printed circuit board drilling that I use for smaller jobs. I have a Proxxon detail sander that stopped working. The coils are 120v but I cannot find a UK repair centre, is there one in Germany? Will you video so we can share the sparks !*! Dave

MFA Torpedo 850 motor by sonar Fleet Admiral!   Posted: 2 months ago
The most funny thing is I have ordered two of them a week ago and there awaiting a new delivery of circuit boards I have ordered the FR30HX Esc,s They should be o.k for the Bosch motors I have . But So far as the torpedo 850 motors as yet I have nothing and that includes the hull... But I will make something soon... I was also considering these.