Grove - EMG Detector


3.3V 5.0V Analog

EMG detector is a bridge connects human body and electrical, the sensor gathers small muscle signal then process with 2th amplify and filter, the output signal can be recognized by Arduino. You can add this signal into your control system.


The sensor cannot be used for medical purposes.

In standby mode, the output voltage is 1.5V. When detect muscle active, the output signal rise up, the maximum voltage is 3.3V. You can use this sensor in 3.3V or 5V system.


  • Grove Compatible
  • 3.5mm Connector
  • 6 Disposable Surface Electrodes
  • Power supply voltage: 3.3V-5V
  • 1000mm Cable Leads
  • No additional power supply

Platforms Supported

Hardware Overview

  • J2: grove interface, connect to analog I/O;
  • J1: EMG Disposable Surface Electrodes connector.
  • U1: INA331IDGKT, difference amplifier.
  • U2, U3: OPA333, Zero drift amplifier.


This demonstration will show you how to use Grove - LCD RGB Backlight, we need a Seeeduino V3.0, a Grove - LED Bar and Grove - Base Shield.

Hardware Installation

Plug Grove - Base Shield to Seeeduino, then connect Grove - LED Bar to D8, connect Grove - EMG Sensor to A0.

Finally, tack the three electrodes to your muscle, and keep a distance between each electrodes.

Download Code and Upload

You can download the demo code in github, click here, then extract it to anywhere.

Then upload the code to Seeeduino, if you have any problem about code uploading, please refer to Getting Started With Seeeduino


When finish downloading demo code, it’ll take about 5s to initialize, you should keep static when initializing.

You can see that when initializing, the Led Bar will go form level 10 to level 0. When Led Bar All off, you can move now.

When you are moving, you can find that the level of Led Bar will change.


ArduinoWioBeagleBoneRaspberry PiLinkIt ONE


The platforms mentioned above as supported is/are an indication of the module's hardware or theoritical compatibility. We only provide software library or code examples for Arduino platform in most cases. It is not possible to provide software library / demo code for all possible MCU platforms. Hence, users have to write their own software library.

Help us make it better

Thank you for choosing Seeed. A couple of months ago we initiated a project to improve our documentation system. What you are looking at now is the first edition of the new documentation system. Comparing to the old one, here is the progresses that we made:

  • Replaced the old documentation system with a new one that was developed from Mkdocs, a more widely used and cooler tool to develop documentation system.
  • Integrated the documentation system with our official website, now you can go to Bazaar and other section like Forum and Community more conveniently.
  • Reviewed and rewrote documents for hundreds of products for the system’s first edition, and will continue migrate documents from old wiki to the new one.

An easy-to-use instruction is as important as the product itself. We are expecting this new system will improve your experience when using Seeed’s products. However since this is the first edition, there are still many things need to improve, if you have any suggestions or findings, you are most welcome to submit the amended version as our contributor or give us suggestions in the survey below, Please don’t forget to leave your email address so that we can reply.

Happy hacking