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Do you think we could get consistent resistance readings through a set of brushes running on the shaft to pickup the probe resistance? I'm sure that as the brushes wore, got dirty, and heated up, etc, the resistance would change but with some of the code we have to calibrate the probes, a once...

I was really thinking about how cool this would be a while back and did spend some serious time looking for a mid temp camera. It seems there is not much between normal and extreme temps. This is as close as I found. http://www.firevideo.net/ I don't think they are meant for the constant...

You can do a webcam in the firepit. I've seen these in use in smelting applications, they are cool. You will not like the price though. http://www.jmcanty.com/Items.aspx?catId=109

What is your budget? I helped with a project to wirelessly measure the G forces on a connecting rod while it was running in an engine. I think I can still source some of those parts. However, they were not cheap even for a fortune 50 companies budget. Similar heat tolerances to your needs...

Maybe that even is over complicated. Looking at your graph I see very few time slices where you fan was below 20%. What would happen if you set the fan to always run at X% minimum. It might hurt your overshoot recovery times slightly but it might take a bit less code. And you only have one...

What about steal from the Traeger program. They have a background "smoke" routine that keeps their fire alive by dumping in some pellets every X time regardless of temp. What about a ?30? second fan burst every X seconds if the fan is not running. I bet with some some tweeking of the delay...

Looks like this is a good project start for the wireless temp probe. I stumbled onto it while looking for my wireless decode of the Maverick language. http://www.arduino.cc/cgi-bin/....pl?num=1294511428/8

Dang it.. I was all ready to head down this road and then I found people decoding the Oregon Scientific wireless temp and rain gauges with Arduino's. Then I found the $30 444mhz usb \ serial modems for the PC's. As temp control isn't an immediate need for me with the Traeger, I'm thinking of...

Look like I better start buying some pieces before somebody actually builds one of these you can buy off the shelf that does everything we want. http://www.macworld.com/articl..._.html?lsrc=rss_main I'm just looking for wifi temp readings so they are getting closer....

Sorry for the thread hyjack but I think we can wrap this up. I've done a bit of research on this since my first post, the math doesn't work as well because we run into a "state change" of the fat and proteins in the meet. Just like it takes energy to go from 32 deg ice to 32 degree water, I...

I've been following this thread for the last couple weeks when I stumbled onto it looking for a dual temp probe temp sensor that was wifi enabled. As I have a Traeger, I don't (currently) need temp control. However, I think I might be tweaking things to add a infra red or sonic range finder...