Let's Make Robots!

RC receiver to Arduino UNO?

I had just dissassembled my RC car, and I found this:

I just know which goes to the GND and 5V of the arduino but no idea which goes to the signal.

I wanted to make a RC controlled arduino bot.

Hope you can help

Please ask me if you want more pics or info regarding the same.

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UPDATE:
It works perfectly now!!!!!!

thanks guys 

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UPDATE 2:

I made a tutorial http://letsmakerobots.com/node/26905 hope it will be useful :)

Cheers

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