For StepStick and A4988 compatible hardware Drive capability up to 1.7A () continuous coil current -2.8A Step / Dir interface with microstep interpolation (up to 256 microsteps) Configure via pin or UART interface stealthChop2-for quiet operation and motion Extended period-high dynamic motor control chopper (available through UART, OTP, pins Enable) coolStep-current control to save energy Stall Guard4-sensorless motor load detection TMC2209 is an ultra-quiet motor driver IC for two-phase stepper motors. TMC2209 is pin compatible with many drivers and TMC2208. TRINAMICs' advanced StealthChop2 chopper ensures noise-free operation of the motor, achieving high efficiency and motor . combination of fast current regulation and resonance suppression function can achieve high dynamic movement. StallGuard is used to return to the origin without sensor to prevent stalling. The built-in power MOSFET can handle motor currents up to 2A , with protection and diagnostic functions, and stable and operation. An easy-to-use UART interface opens up tuning and control . application tuning in OTP memory. can be set for noise-free operation and very precise operation through a separate pulse direction, thereby achieving a cost-effective and highly competitive solution Colour:Blue+white Material:plastic Size:2.01x1.51cm Package Contents: 5 x TMC2209 V3.0 5 x radiator Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.