Basic Information: Printer Model: ender 3 pro MCU / Printerboard: Manta m4p klippy.log (138.4 KB) Fill out above information and in all cases attach your klippy.log file (use zip to compress it, if too big). Pasting your printer.cfg is not needed Be sure to check our “Knowledge Base” Category…

How long are you here @hitman47 ? How many topics you have seen been answered without the bloody klippy.log? Come on, it can’t be that difficult.

Sorry about that, as it seems more of a mechanical issue, I didn’t thought there could be infos about that in the klippy.log. file. klippy.log (138.4 KB)

Ender 3 vrefs are known to come wack from the factory. Adjust your vrefs. The Z motor often has a slightly lower vref from the factory, which is why it isnt heating up. [How To Set Stepper Motor Current / VREF on Ender 3]

BTT Manta M4P with klipper.thanks anyway…

I’m not familiar with the Ender 3 Pro and the parts used within it but when I look at the klippy.log, I don’t see anything that unusual. The X/Y/Z steppers are all set to what I would think is a conservative 0.6A: [tmc2209 stepper_x] uart_pin = PB12 run_current = 0.600 stealthchop_threshold = 9999…

[image] anonymousaga: Ender 3 vrefs are known to come wack from the factory. Adjust your vrefs. The OP is setting the current by software.

If you can stand a possibly louder printer you can use SpreadCycle instead of StealthChop. This should keep the motors cooler with the same current. Exchange stealthchop_threshold = 999999 with stealthchop_threshold = 0 in the respective stepper sections. And i think you can delete the follow…

Thank you. These are creality motors 42-34, 1.8v peak 0.8A max. I don’t understand because the wiring is the same on all 3 motors, and only x and y are buzzing and overheating, not Z! I had to modify the wiring of the endstops, which were 5v and signal to the recommended ground and signal. Do you…

[image] LifeOfBrian: And i think you can delete the following in the Z stepper section: gear_ratio = 16:1 Depends. If @hitman47 calibrated his e-steps with the gear ratio then he cannot More generally: It is recommended not to use hold_current → Not used by @hitman47 == good Not using hol…

Stepper motors overheating

General Discussion

LifeOfBrian February 11, 2024, 5:38pm 13

If the motors turn when commanded then its correct.
When turning in the wrong direction you can invert the respective dir pin.

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Stepper motors overheating

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