Hello everybody! I have a problem after installing TMC2208 drivers with UART connection. I tried to figure it out on my own but couldn’t find a solution. I really hope for the help of the community. Periodically, homing is interrupted by an error. Errors occur only on homing, and never during prin…

Here is a klippy.log with a couple of such errors, search by: Timeout during homing Starting Klippy...Args: ['/home/pi/klipper/klippy/klippy.py', '/home/pi/printe... Pastebin.com is the number one paste tool since 2002. Pastebin is a website where you can store text online for a set per…

What does DUMP_TMC STEPPER=stepper_b return? You can also try to reinitiallize the stepper with INIT_TMC STEPPER=<name>

Send: G28 Recv: // Klipper state: Shutdown Recv: !! Failed to home a: Timeout during homing Recv: ok [...] Send: G28 Recv: // Unable to read tmc uart 'stepper_b' register IFCNT Recv: // Once the underlying issue is corrected, use the Recv: // "FIRMWARE_RESTART" command to reset the firmware, reload …

FYI, there is some information on that error message at: https://www.klipper3d.org/TMC_Drivers.html#i-keep-getting-unable-to-read-tmc-uart-stepper_x-register-ifcnt-errors . If you’re getting the error sporadically, I’d look for loose or noisy uart wiring. -Kevin

I checked the UART connection again and, just in case, replaced the wires with others. Nothing has changed. As a result, I was finally tired of it and I connected the drivers without UART. I can assume that the reason may be in my Trigorilla board. Perhaps I will try to change it to another board …

Kevin, I am experiencing the same issue. I am running an MKS Gen L board with TMC2208 drivers. The error occurs during the home operation to 5 layers into the print. It is also firmware specific. 0.8.0 runs the TMC2208 in UART mode without issue. I have a second board that I still had old fir…

The Klipper software was recently changed to periodically check driver status (whenever the stepper motor is enabled). If Klipper can’t contact the stepper motor driver it will report an error. I would double check that none of the UART wires are loose or frayed. -Kevin

TMC2208: periodically gets errors while homing

General Discussion

massild June 10, 2021, 10:14pm 7

I have the same issue after an upgrade to 0.9.0. I was on 0.8.0 and it worked fine for months.

Intermittent TMC UART weirdness

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TMC2208: periodically gets errors while homing

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