Dual Channel 12A DC Motor Driver Board (DFR0601) Reference

Operating Logic

Signal Input			Power Output
INAx	INBx	PWMx	Mx_A	Mx_B	Motor Status
L	L	X	L	L	Stop
L	H	PWM	PWM	L	Forward rotation
H	L	PWM	L	PWM	Backward rotation
H	H	X	Z	Z	Floating
Over/under voltage, overheat protection happened on Driver			Z	Z	Floating

Note:

x in INAx, INBx, PWMx, Mx_A, Mx_B is the channel number, 1 or 2.
H for high level, L for low level, X is irrelevant to level, Z is high-impedance state.
Don't switch the motor direction if it is still in high speed, adjust the speed to 0% gradually by PWM before switching, otherwise, the driver may be damaged.
Note: it is in High level when the signal input pin is floating.