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Incorrect Sense resistor when using BTT Kraken board. !Dangerous! #661

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Svennixx opened this issue Oct 20, 2024 · 0 comments
Open
1 task done

Incorrect Sense resistor when using BTT Kraken board. !Dangerous! #661

Svennixx opened this issue Oct 20, 2024 · 0 comments
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bug Something isn't working triage This is a new issue to be sorted (automatic label)

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@Svennixx
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Klippain branch

  • I confirm using the main branch

Version

v4.3.1

Describe the bug and expected behavior

When using the BTT Kraken board you have to use the TMC5160 klipper settings even though the drivers are TMC2160. But if you do that you will have to override sense resistor. The sense resistor of the TMC5160 in Klippain is 0.075 but the TMC2160 drivers need it set to 0.022.

If someone does not realises this the actual run_current of drivers will be 3.4 times higher!

I would suggest adding a separate TMC2160 or BTT Kraken TMC config and include with the correct sense resistor.

Additional information and klippy.log

Klippain TMC5160:
image
Official BTT Kraken settings:
image
@Svennixx Svennixx added bug Something isn't working triage This is a new issue to be sorted (automatic label) labels Oct 20, 2024
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