David Baker writes:

PI>Does anyone know of a circuit diagram for the transmitter & receiver for
PI>this toy? I actually want to transmit data back from a robot to my PC, so
PI>this small multi-channel transmitter would be perfect as these remote
PI>controllers normally have a good range & don't need line-of-sight. Failing
PI>that, are they available commercially - tx & rx at a reasonable price? I
PI>definitely prefer PIC based units, as I already have the development
PI>software & hardware & a little bit of experience with them.


Here are sources I know of for radio remote control stuff:

Electronics 123  (Ming)   800-669-4406  (see ad in Circuit Cellar)

Visitect  510-651-1425  (they sell kits too)

Buy and tear apart an X-10 radio xmitter-recv'r unit

Micrilor   radio modems  ($$)  617-246-0130

Linear Corp  (I don't know their phone #)


Infrared is an entirely different topic, drop me a line if you want to
talk about that.

Hope this helps,  Gary Skinner