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- Onboard ULN2003A motor driver chip
- All the pins of the chip have been drawn out, which is convenient for connection and use
- pin 5-12V power supply
- Onboard 4-way signal indicator
- The onboard XH-5P socket can be directly connected to the 28BYJ-48 type stepper motor
- PCB board size: 40.5(mm)x21.3(mm)