Bigtreetech-EBB-SB-USB-v1.0.cfg

[McCosch]

 

Hi,

I’m just stuck here, and it’s really frustrating. I modified my Stealthburner and redesigned several parts. Since I was having printing issues, I swapped out the hotend (for a K1-Pro).
Now I’m having trouble with the sensor; I’ve tried numerous settings in the `bigtreetech-ebb-sb-usb-v1.0.cfg` file, but nothing has worked. Here’s what I’ve tried:
- 4 different sensor types
- Swapped the EBB board
- Swapped the hotend
- Connected a different sensor
- Checked the wiring and improved the cable routing
- Measured the sensor resistance (it’s 90kΩ)

I’ve run out of patience for troubleshooting this any further. It seems like a recurring issue—I had the same problem last December, but unfortunately, I can’t remember how I fixed it. I’ve already ruined several EBB boards from all the constant testing, installing, and uninstalling. Maybe someone else has an idea?

 

config-20260706-170845.zip config-20260706-170903.zip klippy.log

[PFarm]

@McCosch When the temperature is negative, that is either a faulty thermistor or a bad wire connection to the thermistor. You checked the resistance across the thermistor, but have you metered the wires going to the thermistor? Is the continuity on both of the wires? You swapped out EBB, thermistor and hot end. This appears to be a cabling issue.

[Penatr8tor]

According to Copilot AI... The K1 Pro ceramic hotend uses a NTC 100k thermistor. 

[polyneutron]

I do not use silicon coated wire anymore. It is all pvc or vinyl. The silicon looks fine after crimp. After it moves and flexes with the printer the top of the crimp cuts through the silicon and sometimes the wire as well. No issues for two years with wiring.