A4950 AT8236 Dual Motor Drive Module DC Brush Motor Driver Board

1. VM: The power supply of the drive module is input according to the parameters of the motor, and the measured range is 7.6~40V

2. VCC: Connect to 5V input, do not input 3.3V, otherwise it will affect the performance

3. GND: is the ground pin

Control example (when the above 3 pins are connected):

Task 1: A motor rotates forward, duty cycle 50%

Solution: The two wires of motor A are connected to AOUT1 and AOUT2 respectively, AIN1 is connected to low level, and AIN2 is connected to 50% PWMO

Task 2: B motor reverse, duty cycle 20%

Solution: The two lines of motor B are connected to high level according to BOUTL BOUT2o BINI respectively, and BIN2 is connected to 20% PWM

(If your PWM frequency is relatively high, such as 10KHZ, you need 2 PWM pins to control the forward and reverse rotation. If you use Arduin's default frequency of 500Hz PWM. You can use a 10 and a PWM pin to control the forward and reverse rotation, But the effect is not as good as 2 PWM pins)