Hi Guys,
I’m looking for a cheap dodge of hardware temperature sensor by using an RC clock variation
to detect temperature variation where the supply voltage to the pic is precise,
but the temperature reading does not have to be precise.

I know this is possible with the watchdog timer, but that has to be allowed to reset the program,
and could only be practically used for measurement once at the start of a program.

Is there another RC clock I’d have access to in the same manner?
Otherwise an external RC circuit should work... I just pick the clumsiest components that will vary with temperature
Cheers, Art.