Let's Make Robots!

Rc car with arduino

Hi guys, I'm planning to make an obstacle detection rc car where the rc car will have its power being cut-off/reverse when the sensor detects an obstacle.

If I were to use an Arduino to make this project happen, how should I link the Arduino with the rc car?


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I know this thread is old, though since someone asked about it just a couple months ago, I thought I'd add my $.02.

If you are looking for "what", as in what you need, you can go a few different ways. Which way you go depends on your budget, and where you want it to be driving. You'd want to use an Ultrasonic as stated by Sonic33, a SHARP IR sensor, or even a compound eye if your budget allows. But what's the difference?

Both are accurate, my belief is Infrafred is a little moreso. A sonar can be thrown off by carpet or upholstry, which is more common than wood, which I believe can minorly effect IR, so I go with Sharps: They're also more compact on average. IDK the average amp usage of each though, which you'd need to be aware will matter on a remote control car.

The past part, on parts, I've never yet used an arduino, sadly. I could help you on how to program it on a PicAxe in a heartbeat, adapting the beginners tutorial. 

Again, know this is old, but figured someone else might stumble on it, or Sonic here might like the information. ;)

Both IR and ultrasound have their strengths and weaknesses. Many robot builder (myself included) like to use both methods since they compliment each other.

Ultrasound can be very accurate. 


Did you get anywhere with this, I am running a Robotics Club in the New Year at my local school so I am on the look out for robot bits n pieces.

Whilst in town the other day I popped into a couple of charity shops and picked up an RC car for £3.50, I have not taken it apart but I reckon its only got 1 x drive motor and a steering servo so turning it into a robot won't be as good as 2 x drive motors but i'll give it a go.   

I was going to use a nano Arduino and an ultrasonic or I/R detector.

Since you are doing obstacle detection, I think a microcontroller onboard will be required.