TMC2209 v3.0 UART Stepping Motor Driver Stepsticks Mute Driver 256 Microsteps Current 2.8A Peak VS TMC2208 TMC2100     Features Hardware compatible with StepStick and Pololu A4988 Drive capability up to 1.7A (RMS) continuous coil current - 2.8A Peak Step/Dir interface with microstep interpolation (up to 256 microsteps) Configuration via CFG pins or UART interface Motor voltage: 5.5...28V Logic voltage: 3.3...5V RSense: 0.11 Ohm stealthChop2 - for quiet operation and smooth motion spreadCycle - highly dynamic motor control chopper (enableable via UART, OTP, CFG Pin)  coolStep - current control for energy savings stallGuard4 - sensorless motor load detection note: every body have the only screwdriver,if you order more and need more screwdriver,pls contact us. if not,we will only send out one.   More information,pls refer our Facebook https://www.facebook.com/groups/197476557529090/?ref=bookmarks