ITEM NAME:TMC2208 V3.0 Silent Stepper Motor Driver StepStick DIY & Heat Sink Limit Switch Description: Large heat-dissipation areas, so with good heat dissipation effect Stealth Chop can driver the motor to work under silence environment The motor controlled by PWM choppermode operated more smoothly, without Jitter The firmware can dynamically switch the stepper motor between StealthChop2 and Spreadcycle mode via the UART Additional pins are provided with limit switch function Specification: Maximum output current: 1.4A Recommended working current: 1.2A max Default factory current: 0.7A Microstep: 256 microstep breakdown Configuration: STEP/DIR OR UART Load driving electric range: 5-36VIC Logic working voltage: 3.3V/5V Material: PCB Size: 50x30x30mm/1.96x1.18x1.18inch Package Includes: 1 Piece TMC2208 V3.0 Driver 1 Piece Screwdriver 1 Piece Heat Sink Note: Color might be slightly different due to the color calibration of each individual monitor. Please allow slightly measuring deviation due to manual measurement..1 Piece TMC2208 V3.0 Driver. The firmware can dynamically switch the stepper motor between StealthChop2 and Spreadcycle mode via the UART. 1 Piece Heat Sink. Load driving electric range: 5-36VIC. Maximum output current: 1.4A.