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Power Supply:

Ensure that the EMF module is receiving the correct power supply. Some modules might require a specific voltage to function properly.
Ground Connection:

Connect the ground (GND) of the Arduino to the ground of the EMF module. A common ground reference is essential for proper communication.
Verify Serial Communication:

Confirm that your Arduino is working correctly by uploading a simple sketch that communicates through the serial monitor. This will help ensure that the issue is not with the Arduino itself.