Gravity Analog EMG Sensor by OYMotion with Dry Electrode

It detects muscle and neural activity using surface EMG (sEMG) and provides an analog output for signal processing. It is intended for human-computer interaction and similar maker projects, not as a professional medical diagnostic device.

The signal transmitter/conditioner board supports a supply voltage of 3.3V to 5.5V. Its analog output range is 0 to 3.0V.

Yes, the reference material specifically shows Arduino-based examples using Arduino IDE and the EMGFilters library. Example projects include waveform viewing and fist-count detection.

Yes, calibration is recommended every time you use it because EMG signals vary with electrode position, even on the same person. The guide suggests setting the threshold to 0 first, observing the signal, then updating the threshold based on the recorded baseline or peak value.

The metal dry electrode should be aligned with the direction of the muscle and tied to a relatively large area of exposed skin. If readings are abnormally large or unchanged, the guide recommends fine-tuning electrode position and checking for stable power.

Both the signal board and dry electrode board measure 22 × 35 mm. The electrode connector is PJ-342, the module connector is PH2.0-3P, and the dry electrode wire length is 50 cm.