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vitotai / BrewPiLess

Use an ESP8266 to replace RPI and Arduino. Running BrewPi without Pi, therefore, BrewPi-Less
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Both sensors reporting beer temp #400

Open Hugo-Pereira opened 1 year ago

Hugo-Pereira commented 1 year ago

Greetings!

On my latest brew, I'm experiencing the weirdest bug. After some time, brewpi starts registering the fridge temperature being the same as beer temperature. This is causing the heater to run way longer than it should, having my fermentation chamber reached more than 60ºC! My wiring seems correct, and the brewpi bahaves correctly for hours, until randomly it decides to stop reading the fridge temperature.

See image attached. Look at what happens at around 20:20. I'm on version 4.2. What could be causing the issue? image

Thanks in advance

Daniel-Magg commented 1 year ago

I have seen the same issue. Power cycling seems to fix the problem. Would be nice if the system stopped heating/cooling, when the chamber sensor is either stuck or cannot be read.

Hugo-Pereira commented 1 year ago

I changed the resistence on the temperature probes to 2k2 and the issue hasn't happened again on my tests. I'll report again how it goes on my next brew

Daniel-Magg commented 1 year ago

Ok, thanks, I might try that.

It happened to me yesterday again and I have observed that in the device list the value for the chamber temperature sensor was blank (after refreshing the device list). So it should be possible to detect this condition in SW and disable the control system. I'm using the Thorrak PCBs (surface mount main PCB and RJ-45 breakout board). My configuration is: Device 0, device slot 0, HW type sensor, function Beer Temp Device 1, device slot 1, HW type sensor, function Chamber Temp Device 2, device slot 2, HW type sensor, function Room Temp Device 3, device slot 3, HW type pin (inverted), function Chamber Cooler Device 4, device slot 4, HW type pin (inverted), function Chamber Heater

Hugo-Pereira commented 1 year ago

Yes I've also seen that on the device list. Personally I'd love an option to reboot automatically. E.g. if we're logging, and the device has been on for more than 1 hour, and we lost one of the probes, reboot. Rebooting always fixed the issue, but only temporarily.

Lets hope the 2k2 fixes it though. I also added a capacitor on the probes for good measure.

Hugo-Pereira commented 1 year ago

It's been 5 days and I've got no issues to report. Seems that the 2k2 resistor solved it! (Or the capacitor, or both)

Hugo-Pereira commented 1 year ago

I thappened again. This time it took almost 2 weeks though, so it's an improvement (or maybe luck!)