Cannot set heater_bed below 70C. | VORONDesign | Page 1

plain parcel Sep 1, 2024, 1:23 AM

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Been printing ABS on my V0 for the last few weeks, so heater temp of 100-110C. I physically swapped Fysetc bed heater with Honeybadger one, but didn't change the config. I switched to PLA and performed a PID tune at 65C. But I can't set my bed temp below 70C. Not with Fluidd, Console or display control. I tried 'M105 S65' and 'SET_HEATER_TEMPERATURE HEATER=heater_bed TARGET=65', nothing happens. This seems like a config or Klipper issue, since it doesn't try to heat until 70. I tested 65-69 and nothing.

[heater_bed]
heater_pin: PC8
sensor_type: Generic 3950
sensor_pin: PB0
smooth_time: 3.0
min_temp: 0
max_temp: 120

lone dagger Sep 1, 2024, 1:25 AM

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plain parcel Been printing ABS on my V0 for the last few weeks, so heater temp of 100-110C. ...

M105 is "get extruder temperature " so I wouldn't expect that one to work

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The other two versions seem like they should work though... was this from cold or hot?

plain parcel Sep 1, 2024, 1:28 AM

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cold. Looked up the M command when set_heater didn't work.

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Doh, reading is fundamental. m140

lone dagger Sep 1, 2024, 1:29 AM

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Got a klipper log for your adventures here? Might offer some clue...

plain parcel Sep 1, 2024, 1:30 AM

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sure. Just tried m140 s50, no luck. One min...

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📎 klippy.log

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I think I found it... bedfans.cfg overwrite m140

lone dagger Sep 1, 2024, 1:36 AM

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You also missed the S at least once

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M140 50

plain parcel Sep 1, 2024, 1:39 AM

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I added that around the time I started printing ABS, but forgot about it cause that was weeks ago.
Yea, I was overzealous. last time was correct. But going to restart and see if bedfan was the culprit. it was set min at 70. I didn't want it kicking on if printing pla, but it just wasn't turning on at all.

lone dagger Sep 1, 2024, 1:39 AM

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I'm not sure quite what the point of that override you mentioned is though

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Like the override on m190 actually does stuff. But the m140 one just translates from m140 to SET_HEATER_TEMPERATURE, which seems kinda pointless

plain parcel Sep 1, 2024, 1:40 AM

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Ellis' bedfan macro, think it ensures you can use a Temp_wait

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@lone dagger Thanks, I was going in circles for hours on my own. Walking someone else through helped.

lone dagger Sep 1, 2024, 1:49 AM

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Oh ya, I vaguely recall ellis having a thing about the extra time for the heater to stabilize too 😛

#Cannot set heater_bed below 70C.