If you loving grilling and smoking using charcoal/wood but don't want to get up all night long to tend the fire then this is the kit for you. More programmable and expandable than the commercial offerings this thing can do it all. Easy to build with basic soldering skills and easier to program you can be smoking foods in no time.
This was my second heatermeter. I wanted to upgrade for thermocouple input and the quieter circuit board design of the 4.2 version. Booard build was very good and the SMT components for the thermocouple amp already nicely in place.
The documentation is in the wiki and is even better with this version. The build process is now very "heathkit like" with good pictures assembly order and hints.
I married it up with a version B raspberry pi and it fired right up. I use it on a large Big Green Egg and especially appreciate the remote web display now that winter is here in Wisconsin.