AVR-Chat

Hi All,


Silicon Chip,August2002 had a project using op amps and a K type 
thermocouple
which may be of use if you go the op amp way. It uses a LM335 as the 
cold junction
temperature reference.

The link for the AVR journal with corrected schematic (Moyer project) is:-
> http://www.circuitcellar.com//library/print/0503/moyer154/index.htm
The max6675 is a much easier to use and I also felt inspired by the 
Elektor article
on SMD. No fiddly pots to adjust in the calibration process !!!!!

I have a couple of  6675 "samples" and have just bit bashed some 
assembly code
for a mega8 and have one happily reading temperatures from one of the cheap
Jaycar K type probes on a LCD.

Happy to make this code available if required.

Cheers

Rob Payne