VCC 5V Provides power to the module (3.3V also supported). GND GND Ground connection for the module. SCL A5 (Uno) / D21 (Mega) Serial Clock Line for I2C communication. SDA A4 (Uno) / D20 (Mega) Serial ...
** 2. The LED light flashes once per second, that is, the serial port sends a command to read the number of pulses ** 3. The serial monitor can observe that a position value is output per second ...
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