Based on the for 40PIN GPIO interface design, suitable for series motherboards, for Nano. Onboard DRV8825 motor driver chips, built-in converter, easy to control, can drive stepper motors. Support 6 different step resolutions by dip switch: full step, half step, 1/4 step, 1/8 step, 1/16 step and 1/32 step. Support adjusting the motor drive current through the potentiometer, support up to 2.5A current output. Support overcurrent protection, thermal shutdown, undervoltage lockout. Onboard 5V Voltage regulator chip, can directly power for . Onboard multiple stepper motor interfaces, convenient for connecting stepper motors of different specifications. Due to different batches, there may be differences in product appearance, color, and printed text, which will not affect the use. Type:DRV8825 Colour:Blue Material:PCB Package Contents: 1 * For Stepper Motor HAT Expansion Board Kit Only the above package content, other products are not included. Note: Light reflection 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.