Basic Information: Printer Model: Zero G Mercury MCU / Printerboard: BTT SKR 3 EZ k [klippy-1.log|attachment](upload://z3mnJHfwtpRWz0t9hA8TzePPxYS.log) (3.8 MB) lippy.log Fill out above information and in all cases attach your klippy.log file. Pasting your printer.cfg is not needed Describe y…

Typically this has one of the following reasons: Wiring issue Wrong pins chosen on the board Not having enabled I2C or wrong baud rate set. Ref to enabling-i2c

One addition thing that can come in handy: On Linux you can use the i2cdetect command to scan your i2c bus: i2cdetect -l will list all available i2c buses i2cdetect -y 0 will list all devices on the first bus (you need to identify the correct bus you have chosen) Depending on the MPU type you n…

[image] [Capture] [image] what am i doing wrong here

https://www.google.com/search?q=i2cdetect+command+not+found

OKay i can get the command to work [image] let me see if i can get input shaper to work. with sensor plugged in [image]

Please just drop the klippy.log here showing the error. These screenshots just add clutter. Unfortunately I have no further idea: I can confirm the MPUs to be working since I’m using one myself successfully with an RPi 3B, OPi 3 LTS and a RPi Pico Basically it seems to be working but it is quickl…

I think it’s helpful to note that i2c devices are picky about cable length, running anything longer than a metre can cause this issue! Ask me how I know :woozy_face:

Unable to write i2c device

General Discussion

Sineos December 15, 2022, 6:20am 2

Typically this has one of the following reasons:

Wiring issue
Wrong pins chosen on the board
Not having enabled I2C or wrong baud rate set. Ref to enabling-i2c

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Unable to write i2c device

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