{"title":"Gravity: Analog EMG Sensor by OYMotion","handle":"gravity-analog-emg-sensor-by-oymotion","url":"/products/gravity-analog-emg-sensor-by-oymotion","description":"The Gravity Analog EMG Sensor by OYMotion detects surface electromyography (sEMG) signals to measure muscle and neural activity. The sensor amplifies the tiny sEMG signal (±1.5 mV) by 1000× and filters noise through differential input and analogue filtering, outputting a clean 0–3.0V analogue signal with 1.5V reference voltage.\n\nThe module uses reusable metal dry electrodes — no conductive gel required — making it convenient for repeated use in both static and dynamic applications. Connect to an Arduino or other microcontroller to detect muscle tension, measure contraction strength, and analyse sEMG waveforms.\n\nKey Features\n\n\n1000× Signal Amplification – Amplifies ±1.5 mV sEMG signals to a 0–3.0V analogue output\n\nDifferential Input – High common-mode rejection ratio for noise suppression\n\nMetal Dry Electrodes – Reusable, no conductive gel needed\n\nAnalogue Output – 0–3.0V with 1.5V reference, Gravity interface compatible\n\nLow Power – Single supply, minimal current draw\n\nEffective Bandwidth – 20–500 Hz\n\n\nSpecifications\nSignal Transmitter Board\n\n\nSupply Voltage – 3.3–5.5V\n\nOutput Voltage – 0–3.0V\n\nDetection Range – ±1.5 mV\n\nElectrode Connector – PJ-342\n\nModule Connector – PH2.0-3P\n\nOperating Temperature – 0–50°C\n\nBoard Size – 22 × 35 mm\n\n\nDry Electrode Board\n\n\nConnector – PJ-342\n\nWire Length – 50 cm\n\nBoard Size – 22 × 35 mm\n\nWeight – 36 g\n\n\nIdeal For\n\nHuman-computer interaction prototyping\nMuscle activity detection and analysis\nProsthetic and rehabilitation research\nBiometric Arduino projects\n\n\n\nNote: Place dry electrodes aligned with the direction of the muscle. Use a stabilised DC power supply with minimal ripple. For best results, use an ADC with >8-bit resolution and ≥1 kHz sampling rate.\n\n\n\nWarning: This product is not a professional medical device and must not be used for medical diagnosis or treatment.\n\n\nResources\n\nProduct Wiki\n","vendor":"DFRobot","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":7967,"title":"Default Title","sku":"DF-SEN0240","price":72.0,"compare_at_price":0.0,"on_sale":false,"in_stock":true,"available_quantity":247,"option1":"Default Title"}]}