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CapnBry / HeaterMeter

HeaterMeter and LinkMeter Arduino BBQ Controller
https://tvwbb.com/forums/heatermeter-diy-bbq-controller.85/
MIT License
499 stars 83 forks source link

Temp Probe Graphs #55

Closed CoffeeTronics closed 3 years ago

CoffeeTronics commented 4 years ago

Hi, I have been reading over your repo and I was wondering where you obtained the probe temperature curves from? I am using the Maverick ET-73. For fun I am trying to produce a lookup table and wanted to compare my results to see if they made sense. Any pointers are greatly appreciated!

CapnBry commented 4 years ago

The ET-72/73 probe coefficients I use are curve fit from a PDF file that's floating around the internet that was allegedly were provided (faxed?) from Maverick with a table of temperatures and resistances for the thermistor they use. It's been a decade since I've seen that file though so I'm not sure where it can be found these days.

If you're just looking for a full dump of the curve of the temperature to 10-bit ADC reading, then maybe a test page I use to compare probes and resistances could help. You can find that at HeaterMeter ADC Resolution. If you have further questions about it then I'd invite you to post on the forums where you might get more responses or someone might even still have the original numbers that mine are fit to. The issue tracker here isn't really for Q and A.