[Caffeine] roast temperature logging, PID control

[Dana]

Hello,
One project I've been meaning to work on is modification of a popcorn 
popper to log roast temperature, possibly control via Arduino & solid 
state relay.

I was thinking of using a thermocouple + amp like the AD595 
(https://www.sparkfun.com/products/306), then I came across this well 
developed open source Arduino shield for temperature monitoring and 
control http://code.google.com/p/tc4-shield/ (You can buy PCBs via 
OSHPark, but you have to order in multiples of 3, cost with parts ~$30 + 
arduino, thermocouple and relay. 
http://www.oshpark.com/shared_projects/dolZshm9)

Has anyone here built a project like this, or interested in having a 
hack night this month? I suppose it is also applicable to other 
temperature control / PID applications: espresso machine, reflow oven, 
etc.

- dana