Hi, I'm making plans for a remote control car from scratch, and have a few questions. Are hobby motors able to go backwards, how do you control that? Any ideas on making a wireless usb cord for a webcam? Do you know of any small things (like motors) that could move a switch remotely for the steering mechanism? Any other ideas?

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trialex10 years ago
Tamiya have a lot of excellent hobby sets... yesterday I was looking at the tank tread set, dual gearbox set and universal plate. Using those three compoenents you would have the chassis, drive mechanism and steering mechanism sorted. Total price was about $45 Australian. Then of course you've got the control side. By far the simplest and easiest solution would be to repurpose an existing RC transmitter/reciever. The easiest DIY solution I can come up with is a cheap 433MHz radio transmitter (sparkfun have them for $15-ish for the rx/tx pair) plus a microcontroller on each end, or on the reciever side only if you are willing to use your PC for input. Then again you may not want to go down the tracked vehicle path. Again the dual gearbox would be the a good basis for a rear wheel drive car. If you are using a microcontroller on the reciever side you could use a servo for front wheel steering.
Weissensteinburg (author)  trialex10 years ago
I think that im just going to take apart an old car, link the forward/backward switch to the left motors, and link th right motors to the left/right switch. Becauase i'm going for alot of raw power, im using a motor for each wheel, and like i said before, will go forward on one side, and backwards on the other when i want to turn. If I do the webcam thing, ill get another and just hook a normal toggle switch instead of the one they have so that i can turn the light on/off
I don't think you need 4 motors if all you want to carry is a webcam

check this car out
it will be impressive enough if you can take the guts out of that and make your own lighter moving robot
Weissensteinburg (author)  frank2608011510 years ago
I may not even have a webcam if i cant figure a way to make a weireless usb cord, I jsut want a LOT of power and speed.
here's something simple you can do
Weissensteinburg (author)  frank2608011510 years ago
That looks pretty cool, but do they talk about how to setup a remote and receiver? Because thats [as far as i know] the only part im still fogged about.
knexrule10 years ago
go buy a cheap rc car and fit the inside parts to a cool model car
Weissensteinburg (author)  knexrule10 years ago
I wanted to do it more from scratch, not just changing the body. Im going to use 4 separate hobby motors, and do it all like that, though i may use a rc cars insides for the wireless part.
Weissensteinburg (author) 10 years ago
I was planning on making it totally from scratch..my plans were to have a motor for each wheel, and have the lefts controlled together and rights controlled together so i would have left go backward and right forward to urn left...I just need a wireless switch somehow.
there isn't really a easy way to make a wireless switch, the cheapest way to go is using a toy r/c car's electronics, if you want more power, then add a set of relays as a h-bridge my friend actually used a four relays, 4 transistors, a few resistors, and a zipzap car, and his scratch built r/c car set a record for our computer engineering class race track
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