Hi Norm and David,

I'm not a real expert here, but I think that you may have a problem with
using the buddy cable idea. Don't RC cars use a different set of
frequencies than the RC planes?

Well, if there is any way of getting it to work, I think that the
transmitter expects to find a variable resistance at several of the pins of
the buddy cable. I don't think that the trainer transmitter actually
generates any signals, I think that the buddy cable simply reads the
control pots.

I'd bet that a PIC wouldn't have aproblem generating the PWM that is the
actual modulating signal. If so, you could just canibalize a transmitter
for its RF unit and feed it the signal from the PIC.

I'm sure someone else on the list can shed more light on this. Perhaps Andy
Kunz?

Good Luck,

Sean


At 05:58 PM 9/2/98 -0500, you wrote:
>I think a good way to control a RC car is to use the buddy cable that most
>Airplane R/C units have.   Instead of connecting one end of the buddy
cable to
>another transmitter you could connect it to a PIC that could be talking to a
>computer.  I don't really know what kind of signal the buddy cable is looking
>for though.  You could use a Airplane transmitter with a crystal that is used
>for cars.  The only drawback I could think of in this system is that you
would
>not get any feedback.
>
>Norm Cramer wrote:
>
>> I would like to know the easiest way to control an RC car from a computer
>> (could be a PIC).  I don't want the PIC on the car but to send the commands
>> to the car.  Ideally the car remains unmodified.
>>
>> Thanks for any help.
>>
>> Norm
>
>
>
>--
>David Sprenkle
>
+--------------------------------+
| Sean Breheny                   |
| Amateur Radio Callsign: KA3YXM |
| Electrical Engineering Student |
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