Hookup Using Two 9V Batteries

Three‐lead Differential Muscle/Electromyography Sensor for Microcontroller Applications

1. Connect the power supply (two 9V batteries)

  • a. Connect the positive terminal of the first 9V battery to the +Vs pin on your sensor.
  • b. Connect the negative terminal of the first 9V battery to the positive terminal of the second 9V battery. Then connect to the GND pin on your sensor.
  • c. Connect the negative terminal of the second 9V battery to the –Vs pin of your sensor.

2. Connect the electrodes

  • a. After determining which muscle group you want to target (e.g. bicep, forearm, calf), clean the skin thoroughly.
  • b. Place one electrode in the middle of the muscle body, connect this electrode to the RED Cable’s snap connector.
  • c. Place a second electrode at one end of the muscle body, connect this electrode to the GREEN Cable’s snap connector.
  • d. Place a third electrode on a bony or non‐muscular part of your body near the targeted muscle, connect this electrode to the YELLOW Cable’s snap connector.

3. Connect to a Microcontroller (e.g. Arduino)

  • a. Connect the SIG pin of your sensor to an analog pin on the Arduino (e.g. A0)
  • b. Connect the GND pin of your sensor to a GND pin on the Arduino.