I like this idea Jan.  I wanted to use as small a pic as possible, which =
was=20
going to be a 12F629.  But that has no PWM :-(

But I'm thinking of switching to a 16F84 and trying this now.

Cheers,
-Neil.


On Wednesday 30 July 2003 18:13, Jan-Erik S=F6derholm XA (TN/PAC) scribbl=
ed:
> I'm currently prototyping a 18F1320 based device
> that will send IR based "commands" to a number of
> slave units.
>
> The 38Khz carrier commes from the PWM module,
> just setup and let it run. The modulation is made
> by toggling the PWM output pin tris bit. The PWM
> module is left running all the time. Easy and very
> little to code, mostly "setup".
>
> Since I build both sides of the connection, I'v made
> a custom protocol using aprox 20 bits ("address", "command",
> "value" ad so on). I will be using Manchester coding
> (self-clocking) to make it easy to decode in the receiver.
>
> Jan-Erik.

--
http://www.piclist.com hint: PICList Posts must start with ONE topic:
[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads