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he PWM driver board uses the I2C method, so only four lines can be connected to the Arduino device:
“Classic” Arduino pin mode:
+ 5v -> VCC
GND -> GND
Analog 4 -> SDA
Analog 5 -> SCL
Old Mega pin way:
+ 5v -> VCC
GND -> GND
Digital 20 -> SDA
Digital 21 -> SCL
₨1,000
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