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TMC2209: has all the functions of tmc2208 and can completely replace tmc2208. At the same time, tmc2209 has better heat dissipation performance, supports larger currents and supports sensorless functionality. 【Features】Support sensorless feedback function. Support uart mode by attaching jumper caps instead of soldering to mks gen_1 V2.0, skr1.3/1.4 and mks sgen_1. Mute and low power consumption: This module allows noiseless, high-precision chopping algorithms for silent motor movement and silent standstill, making it super quiet during the printing process. With an RDSon value of 0.2A, the TMC2209 driver has an output driver with lower resistance line that delivers lower power consumption and higher current. Precautions: Verf measures the voltage of Gnd and potentiometer. Please do not connect the motor when measuring the voltage, otherwise it is easy to burn out the driver. When measuring voltage, please connect a power source, not just a USB power source. Please pay attention to the direction and do not insert it accidentally! Higher drive voltage: drive current is larger, the maximum peak current up to 2.5A, stable pressure current up to 1.8A. Support modes: supports UART mode, perfect for use with MKSSGEN-L, no jumper required.