BIGTREETECH TMC2209 V1.2 - Microstep and Current Configuration; Microstep Resolution Settings; Drive Current Calculation and Adjustment

TMC2209-V1.2 manual Shenzhen Biqu Technology Co., Ltd.
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6、Microstep Setting
7、Drive Current Formula
1、Vref：0.2V – 2.2V
2、Factory default Vref: 1.2V ±0.1V
3、Factory default current：0.9A
4、Potentiometer regulation instructions
Rotate the potentiometer clockwise to reduce the Vref voltage and
the drive current can be reduced.
Rotate the potentiometer clockwise to reduce the Vref voltage and
the drive current can be reduced.
Rotate the potentiometer counterclockwise to increase the Vref