Muscle Sensor Kit
This EMG Sensor or Muscle sensor V3.0 With Cable And Electrodes will measure the filtered and rectified electrical activity of a muscle; outputting 0-Vs Volts depending on the amount of activity in the selected muscle, where Vs signifies the voltage of the power source. Required Power supply voltage: min. +-3.5V.
By detecting the electromyogram (EMG), measuring muscle activity has traditionally been used in medical research, however with shrinking but more powerful microcontrollers and integrated circuits the advent of EMG power Road and sensors can be used for various control systems.
This EMG Muscle Sensor measures, filters, rectifies, and amplifies the electrical activity of a muscle and produces an analog output signal that can easily be read by a microcontroller, enabling novel, muscle-controlled interfaces for your projects. To use this Muscle sensor you will need a few components like batteries , jumper wires , breadboard and arduino
Wiring Instructions:
- To use this sensor, the user must have three electrodes connected to the subject’s body.
- The reference electrode should be placed on an inactive section of the body, such as the bony portion of the elbow, shin or forearm. This electrode should be connected to the black or brown cable.
- The two other electrodes should be placed along the muscle selected to be measured. The second electrode should be placed along the mid-length of the muscle; this electrode should be connected to the red cable.
- The last electrode should be placed at the end of the muscle and connected to the blue cable.
- Finally, connect pin SIG to an analogue input pin of your microcontroller and the GND pin to the ground pin on your microcontroller.
Working Principle
- When a muscle contracts, the brain sends electrical signals through motor neurons to muscle fibers, generating small electrical potentials on the skin’s surface.
- The muscle sensor uses adhesive electrodes placed on the skin — two on the target muscle and one as a reference.
- These electrodes detect the weak bioelectric signals (EMG signals) produced during muscle activity.
- The signals are then amplified, filtered, and rectified by the sensor module to remove noise and make them readable.
- The module outputs an analog voltage proportional to the muscle activity — higher voltage means stronger muscle contraction.
- This analog output can be fed into a microcontroller (like Arduino) to control devices such as robotic arms, servos, or LEDs based on muscle movement.
Usage Tips for Muscle Sensor Kit
- Clean the skin before placing electrodes for better signal quality.
- Place electrodes along the muscle direction, not across it.
- Keep the reference electrode on a bony or inactive area.
- Avoid excessive movement to reduce signal noise.
- Use proper shielding and grounding to minimize interference.
- Calibrate the sensor before use for consistent readings.
- Disconnect electrodes gently to avoid damaging the leads.
Applications
- Prosthetic Control
- Robotics
- Wearable Tech
- Rehabilitation
- Gaming & VR
- Biofeedback Systems