An H-Bridge is a circuit that can drive a current in either polarity and be controlled by Pulse Width Modulation (PWM). Pulse Width Modulation is a means of controlling the duration of an electronic pulse to regulate motor speed. Motors are rated at certain voltages and can be damaged if the voltage is applied too heavily or dropped quickly. PWM helps in controlling the speed of the motor by varying the duration of the pulses.
0-36mA
25W
2A per motor
5V to 35V
5V input (unnecessary if power source is 7V-35V)
Enables PWM signal for Motor A
Enables PWM signal for Motor B
Ground
Enable Motor A
Enable Motor A
Enable Motor B
Enable Motor B
Motor A lead out
Motor A lead out
Motor B lead out
Can actually be from 5V-35V, just marked as 12V
28mm
44mm
44mm