Features:
1. Two HG7881 motor control chips onboard.
2. The module can drive 2 DC motors at the same time or 1 4-wire 2-phase stepper motor .
3. Module input voltage: 2.5-12V.
4. Each channel has 800mA continuous current output capability.
5. PCB size: 29.2 (mm) x 23 (mm).

Interface Description
[6P black pin instructions]
1, VCC: power supply +. (2.5V-12V)
2. GND: Power supply -.
3, IA1: connected to the microcontroller IO port
4, IB1: connected to the microcontroller IO port
5, IA2: connected to the microcontroller IO port
6, IB2: connected to the microcontroller IO port
[4P green terminal description]
1. OA1 OB1 is connected to 2 pins of DC motor.
2. OA2 OB2 is connected to 2 pins of DC motor.

Module instructions
Connect VCC, GND to the power supply, and the module power indicator lights.
IA1 input high level, IB1 input low level, [OA1 OB1] motor forward;
IA1 input low level, IB1 input high level, [OA1 OB1] motor reversed;
IA2 input high level, IB2 input low level, [OA2 OB2] motor forward;
IA2 input low level, IB2 input high level, [OA2 OB2] motor reversed;

Package Included:
2Pcs NOYITO HG7881 2-Channel Motor Drive Module