At the end of the day I (as you have) use the TMC5160 as my goto driver. It can be completely setup from the config.h file and offers a current range that supports most of the stepper motors we use. I

#tmc2209

Excellent ... Both should work. Both are well tested. If you have an Android device, the WiFi will give you a very useful application for most OnStep functions.

#tmc2209

The Arduino Nano does not work with OnStep. You need to get a supported board. Before you decide on which one, read the OnStep Wiki, specially the last question in this FAQ. The resolution needs to be

#tmc2209 #arduinonano

As Howard said, OnStep cannot use the UART interface. You can still use the TMC2209, but you are limited to microstepping of: 64,32,16,or 8. Not a real limitation though, since it covers the range we

#mks #tmc2209 #fysetc #uart