Hi,
I was doing a low and slow cook yesterday at 225 when after about 4 hours, the HM (not the Pi) crashed and the fan went 100%. I realized it when the pit temp got to about 500F. The ribs were still edible, but my issue is that while that happened, it looks like the atmega lost all EEPROM parameters (probe names, custom PID values, custom probe coefficients, etc.)
I'm trying to understand 2 things. First, how did this happen? I looked at the list of parts (4.3) and most are more than ok at -20C except one: the resonator, which has a minimal operating temperature of -20. I'd assume some form of safety factor here, but the temperature in which the HM was operating was indeed -20C. So I could see that with a resonator starting to get funny, the atmega could crash.
The second thing I'm trying to see is if there's any way I could recuperate the previous values of the EEPROM, especially the PID values, which were painstakingly tweaked. The probes I don't care so much as Bryan made an excellent tutorial on how to do this when a standard probe is known and trying to calibrate an unknown probe. I'm very familiar with command line stuff; I looked around a bit but couldn't find anything other than a file called "autobackup.rrd" but it's binary and couldn't figure how to read it.
Thanks!
Louis
I was doing a low and slow cook yesterday at 225 when after about 4 hours, the HM (not the Pi) crashed and the fan went 100%. I realized it when the pit temp got to about 500F. The ribs were still edible, but my issue is that while that happened, it looks like the atmega lost all EEPROM parameters (probe names, custom PID values, custom probe coefficients, etc.)
I'm trying to understand 2 things. First, how did this happen? I looked at the list of parts (4.3) and most are more than ok at -20C except one: the resonator, which has a minimal operating temperature of -20. I'd assume some form of safety factor here, but the temperature in which the HM was operating was indeed -20C. So I could see that with a resonator starting to get funny, the atmega could crash.
The second thing I'm trying to see is if there's any way I could recuperate the previous values of the EEPROM, especially the PID values, which were painstakingly tweaked. The probes I don't care so much as Bryan made an excellent tutorial on how to do this when a standard probe is known and trying to calibrate an unknown probe. I'm very familiar with command line stuff; I looked around a bit but couldn't find anything other than a file called "autobackup.rrd" but it's binary and couldn't figure how to read it.
Thanks!
Louis