TWOTREES TMC2209 v2.0 passes tests but fails to energize stepper about tmc2209_raspberry_pi HOT 3 CLOSED

Got a batch of new BTT drivers which just worked. Once I had a sanity test, tried the TWOTREES again. 2 our of 3 drivers did not energize the stepper. The 3rd worked flawlessly when pulling ENN to Low. After running it for a bit, it stopped energizing the stepper. No such issues with the BTT's
Seems like I got a bad batch.

Thanks for the help @Chr157i4n, and the detailed information in this project!

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Hey, thanks for the detailed report.

• UART connection seems to work
• the STEP/DIR Interface seems to work aswell

So this should be an issue with your driver and not with the Scripts, Pi or Wiring.

Where did you buy your driver?
When i google "TWOTREES TMC2209 v2.0", i get a product from Aliexpress for under 1€, which say TNC2209 and Gerwany. So i guess that is a Scam.

I guess the driver does not output any voltage/current to the motor. On my driver there is an ENN pin (Motor current output gets activated with a LOW level on the pin), but on your driver there seems to be a EN Pin. Maybe the current output gets activated with a HIGH level instead.
You can test whether your driver activates by connecting the EN/ENN pin directly to GND or 3.3V.

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Thank you so much for your response! I'll try that and report back.
In the meantime, I ordered some BTT-branded TMC2209 as a sanity check.

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