TMC2208 V1.0 High Subdivision 256 Stepper Motor Driver with Tester Module Kit for 3D Printer

 Instructions for use   1 When using on the printer control board please keep the 3 jumper caps under the socket 2 Because of the characteristics of the chip be sure to do a good job of heat dissipation The heat sink is directly attached to the PCB pay attention to the direction of the heat sink otherwise it will cause the heat sink and the pins to be connected together and cause a short circuit Refer to the following figure for how to use it 3 The direction of the motor is exactly the opposite of that of the A4988 and DRV8825 If you want to directly replace the A4988 please adjust the firmware or adjust the motor wiring   Drive current algorithm and adjustmen   1 Vref measures the voltage at Gnd and the middle of the potentiometer 2 Do not connect the motor when measuring the voltage otherwise it is easy to burn the drive 3 When measuring the voltage you should connect the power and do not just connect the USB power supply Pay special attention to the direction do not insert it backwards   If you want to know more info can click to know Here Package Included  TMC2208 V1 0 1 Heat sink 1 Screwdriver 1 tester module 1 Data cable 1