#nitehawk ADC out of range

17 messages · Page 1 of 1 (latest)

flat escarp
#

Hi Just got my nitehawk up and running and after extruding some filament i got the ADC out of range error.

My nitehawk is currently reporting 97 degrees celcius(just below the 100 cap)

but the extruder motor feels cool to the touch could this be a config issue?
before extruding im pretty sure it was reporting 30 degrees
its now constantly hovering around 97 with small fluctuations but not going down

after turning the printer off and waiting for ~15 min to turn it on again it starts at 90 and is slowly rising and now hovers around 97 degrees again

base config used:

[temperature_sensor nh_temp]
## Nitehawk PCB Sensor
sensor_type: CMFB103F3950FANT
sensor_pin: nhk:gpio26
pullup_resistor: 2200
min_temp: 0
max_temp: 100
gcode_id: nh_th

extruder run current is 0.4

normal root
#

#ldo_motors message

flat escarp
#

Removed the crosspost leaving this one up

flat escarp
obtuse spear
#

How have you defined that custom sensor type? I have this, which I think I just copypasted from the LDO documentation:

temperature1: 0.0
resistance1: 32116.0
temperature2: 40.0
resistance2: 5309.0
temperature3: 80.0
resistance3: 1228.0```
flat escarp
#

turning the printer on again might have missread something and adjusted this thinking it was the thermistor for the hotend

#

😅

obtuse spear
#

I haven't paid much attention to that sensor, it doesn't seem to measure anything too relevant and isn't at all useful as a chamber temp sensor. Mine just shows some kind of value 15-25° above the chamber temp sensor.

flat escarp
#

yep that was the issue

#

now its at 32 degrees

obtuse spear
#

Mine right now (with printer just sitting there not doing anything) says 37.3°C, while chamber temp says 23.8°C which agrees well with room temperature.

flat escarp
#

this is what mine looks like now

#

dont have chamber temp setup yet

#

much closer to ambient temp now

obtuse spear
#

I have more than once thought about desoldering the thermistor and put a little jumper wire in to use for something else. Not that I need it, but I could...