I had a problem with my Anet a8 plus printer; the stepper of the extruder was only humming and not moving anymore. I want to change the motherboard of the printer with a SKR PRO 1.2, that was in use with my lowrider-3. At the moment I need the printer more than the lowrider and I have just built an open-cnc shield that I want to use with my lowrider.
I have overcome many hurdles in my struggle to get it working. Everything seems to be working, including a bltouch sensor, only the temperature sensors are giving problems. I can’t get them to work.
Temperatures change within seconds from -15 to + 15 (room temperature is about 16 degrees Celcius). When I try to heat up the hotend or heatbed, I get a temperature error.
#### Error reported by printer
Your printer's firmware reported an error. Due to that OctoPrint will disconnect. Reported error: MINTEMP triggered, system stopped! Heater_ID: bed - echo:Home XYZ First
When I look at the temperatures in the terminal i see this:
Recv: T:12.42 /200.00 B:14.39 /60.00 @:127 B@:127
[...]
Recv: T:13.69 /200.00 B:15.12 /60.00 @:127 B@:127
[...]
Recv: T:15.70 /200.00 B:15.40 /60.00 @:127 B@:127
[...]
Recv: T:20.51 /200.00 B:16.70 /60.00 @:127 B@:127
[...]
Recv: T:22.92 /200.00 B:15.11 /60.00 @:127 B@:127
[...]
Recv: T:29.06 /200.00 B:17.10 /60.00 @:127 B@:127
[...]
Recv: Error:MINTEMP triggered, system stopped! Heater_ID: bed
Recv: echo:Home XYZ First
Changing monitoring state from "Operational" to "Error"
Send: M112
Send: N2 M112*35
Send: N3 M104 T0 S0*34
Send: N4 M140 S0*97
Changing monitoring state from "Error" to "Offline after error"
Connection closed, closing down monitor
Why is it giving me a temperature error, while the temperature seems to be rising?
Marlin.zip (91.6 KB)
I attached configuration.h and configuration_adv.h
Seems I already changed that yesterdaynight. I just upgraded the screen software, now i can see the extruder temperature, i couldn’t see that before. Heating still results in failure.
Yesterday i went through the procedure of installing klipper on a ramps stack and raspberry, all went well. When I was ready to take it of the workbench to the printer I realised that the printer runs on 24 volts and the rampsboard doesn’t like 24volt… So I tried to compile klipper for the SKR pro. The temperature graph looks a lot more promising now. So lets first get 2023 going, then I am going to experiment further in the klipper config…
It’s alive and kicking. Printed the first pieces for my son’s ironman mask. Still some tuning to do, but I am very pleased with it now. Temperature is rock-stable now. It was quite a journey to get klipper working. Now make my other printer working again.