Does anyone have the V2.4.9 eddy firmware file they can share? I bought the eddy sensor kit used on amazon and the usb drive was wiped. I downloaded the ST link drivers and firmware for the toolhead and such which included the klipper bin files but not the .deb firmware. I can only find the V.2.5.0 eddy firmware online to download and I’m getting MCU errors now. I flashed back to V2.4.6 non-eddy and the errors went away. Went back to V2.5.0 eddy and get MCU errors again. Thinking I need V2.4.9 eddy to resolve it but I’m new to klipper and the SV08.
Here’s the errors I’m getting on V2.5.0
MCU Protocol error
This is frequently caused by running an older version of the
firmware on the MCU(s). Fix by recompiling and flashing the
firmware.
Your Klipper version is: v0.12.0-0-g02eeceb-dirty
MCU(s) which should be updated:
mcu: Current version v0.12.0-4-g3bfe0b7-dirty-20250722_062209-SPI-XI
extra_mcu: Current version v0.12.0-4-g3bfe0b7-dirty-20250722_062209-SPI-XI
Up-to-date MCU(s):
Once the underlying issue is corrected, use the “RESTART”
command to reload the config and restart the host software.
mcu ‘extra_mcu’: Command format mismatch: query_adxl345 oid=%c rest_ticks=%u vs query_adxl345 oid=%c clock=%u rest_ticks=%u
I’ve only found v2.5.0 on there. The link at the bottom of your image is for v.2.5.0.
Maybe I just need to flash the firmware for the toolhead and mainboard that’s included with v2.5.0. It was finicky getting ST Link to connect to the toolhead so I was trying to avoid it.
I went ahead and flashed the mainboard and toolhead with the other firmware and it boots without errors now. However, whenever I try “Get LDC Current” it just hangs for a second then reboots. I tried Calibrate Eddy and it just smashes into the print bed.
Elsewhere someone mentioned they loosened their eddy sensor and ran the calibration which sort of worked. I did the same and I was able to actually complete calibration but obviously the sensor isn’t securely mounted so that is useless.
I re-secured it and tried calibration again. It just kept trying to bury itself through the bed again.
Is there a power setting that can be increased that might help?
I finally got it figured out. I thought I had the old sensor but I don’t. I noticed that if I took the sensor loose and got it closer to the bed, it worked. Then I took it off and then noticed the A2 stamp on it. The A2 version is made to sit slightly higher that the old one. The sensor could never get close enough to the bed to calibrate as the nozzle would hit first.
I re-flashed all the firmware for the A2 version and it worked.
However, I was still having issue with the nozzle hitting the bed sometimes. Not nearly as dramatic but it would hit and skip belt teeth still then continue calibration. I took the sensor loose and tweaked in around just a bit so the sensor sat closer to the bed and that alleviated all my issues. The sensor has a nub that sits in a detent so it should be pretty accurate but apparently even if it’s off a tiny bit, you’ll have issues.
