I am new to Parallax. It comes highly recommended.

I wish to build a 1/10 scale hobby level radio control car that can also run autonomously. I think they have a PIC that can do the job. The question is how do deal with the Pulse Width Modulated signals that come from the radio receiver. Presently they go directly into the electronic speed control module and the steering servo. I thought that for my design I could use them as inputs to the PIC.

I hope that I do not have to use PIC code space and compute power to continuously sample the three RC receive channels. Is there some kind of transition detector which can digitize the PWM signals? I assume the PIC input can figure when they change.

If Parallax does not make an appropriate micro to be the central brains of this operation I can use a DPDT switch under PIC control to steer the PWM signals. There has to be a signal from the radio transmitter telling the car which mode is appropriate. That signal has to be interpreted by the micro somehow.

Ken