DFRobot DFR0225 Manual - Page 5

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PWM Control Mode

The PWM DC motor control is implemented by manipulating two digital IO pins and two PWM pins. As illustrated

in the diagram above (Figure 5), Pin 4,7 (7,8 for old Romeo version) are motor direction control pins, Pin 5,6 (6,9

for old Romeo version) are motor speed control pins.

Sample Code：

Digital 6

Motor 2 Direction control

Digital 7

Motor 2 Enable control

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Fig4: PWM Motor

Control Pin

Allocation