Stupid questions from newbies

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Occashokka
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Stupid questions from newbies

Post by Occashokka » Wed Mar 04, 2015 5:26 pm

Sorry to be a pain but after the gears sheared on my sg90 I took half the exposed wires then deconstructed it.i then realized servo boards are what people mod to use a circuit boards in nanos and I was wandering if it could be used,what I would need and also would I only need one or is it one per wheel
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Re: Stupid questions from newbies

Post by Remote-Controlled Dave » Wed Mar 04, 2015 6:11 pm

You'd need two, one for each motor. I think they're probably a bit big for nanos though.
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Re: Stupid questions from newbies

Post by Occashokka » Wed Mar 04, 2015 8:24 pm

The whole servo is only 9g and when all othe components are detached and wires are only an inch long it weighs as less than a gram on my scales
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Re: Stupid questions from newbies

Post by Occashokka » Wed Mar 04, 2015 8:28 pm

And I would also run two wheels through one motor probably
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Re: Stupid questions from newbies

Post by Hogi » Wed Mar 04, 2015 8:37 pm

you can use servo boards as ESCs. you would need to modify it though. by this i mean you'd need to remove the potentiometre and replace it with resistors. somebody else could explain in better detail.
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Re: Stupid questions from newbies

Post by Rapidrory » Wed Mar 04, 2015 8:40 pm

SG90 Servo boards are what I use for my Nanos, though you'll probably need to get some Nano drive units rather than the servo motors. A really simple way to hack the boards is to pull out the potentiometer (the bit with the red wires going to it), turn it to the central position and put a drip of super glue on it to stop it from turning.
A better way to do it is to remove the potentiometer completely and solder some ~2k resistors in it's place.

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Re: Stupid questions from newbies

Post by Remote-Controlled Dave » Wed Mar 04, 2015 8:43 pm

You can keep the potentiometer on as long as you find its mid point and glue it in place. But its better to replace them with resistors. I don't really understand what you mean using only one motor. That would mean no steering, unless you plan to use car steering. Or do you mean 4 wheel drive with 2 wheels per motor?
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Re: Stupid questions from newbies

Post by Occashokka » Wed Mar 04, 2015 8:46 pm

I was going to drive it using 2 mini metal cylindrical motor things for 4 wheels I have that's about 1g and I found powering my broken model chopper
EDIT:would show pic but my phone won't let me
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