Ah yes, memories of my RC pattern-aircraft days.

My guess here is if you want to be able to totally disable the PIC circui=
try,=20
you should use another channel on the RC receiver to switch on/off the PI=
C=20
chip.  You'll also need to look into merging the signal from the PIC with=
=20
that from the receiver, perhaps with a pair of switching transistors on e=
ach=20
channel or maybe even a pair of AND gates, etc.

However, if you can trust the PIC code to some extent, perhaps have the=20
receiver outputs go into the PIC, then the PIC drive the servos.  In the=20
"safe" mode (the extra channel from the receiver going into the PIC as a=20
transmitter-takes-control signal), you would just read the inputs of the =
PIC=20
and port to the outputs of the PIC.

Cheers,
-Neil.



On Monday 28 April 2003 22:37, Joe Smith wrote:
> I am looking to interface a PIC to some servos in a RC model. What I am
> looking to do is be able to have the PIC control some of the servos but=
 I
> also want to be able to use the transmitter in case my code does not wo=
rk
> exactly as I had intended. Are there any resources where someone has do=
ne
> this before or where I can get some ideas?
>
> Thanks
>
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