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janelia-arduino / TMC2209

The TMC2209 is an ultra-silent motor driver IC for two phase stepper motors with both UART serial and step and direction interfaces.
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Potential Standstill Mode issues #77

Open nmaas87 opened 2 months ago

nmaas87 commented 2 months ago

Dear all, I tried the standstill mode example from the unidirectional examples. Sadly, it seems like the standstill modes set have no effect. Running the example switches through the modes while you cannot feel any change physically. If I add the SettingsAndStatus example after each change, I can see that the standstill mode will always be at "1", which means freewheeling. Is there some issue or am I doing something wrong? Thanks a lot :)

peterpolidoro commented 2 months ago

What is your setup? How do you have it wired? Do other examples work? Is your motor large or small? Try disconnecting your motor from the driver and see how it feels rotating the shaft by hand. Then short one of the coils by connecting a wire between two motor pins connected to the same coil then try rotating the shaft by hand. Do you feel a difference?