What is GSR (Galvanic Skin Response) or EDA (Electrodermal Activity)

GSR (Galvanic skin response) or EDA (Electrodermal Activity) refers to changes in human sweat gland activity, which can reflect the intensity of human emotional changes as known as emotional arousal

How GSR or EDA works

The principle is that when the human body is stimulated by the outside world or the emotional state changes, the activity of the nervous system will cause the relaxation and contraction of blood vessels in the skin and the secretion of sweat glands. At this time, the GSR sensor is required to capture this information.

This image shows how GSR changes in humans while watching different movies (Photo courtesy: SICHIRAY)

About Grove GSR sensor

Product Details:

Grove GSR sensor allows you to spot such strong emotions by simply attaching two electrodes to two fingers on one hand, an interesting gear to create emotion-related projects, like a sleep quality monitor. In some galvanic skin response devices such as lie detectors, this scientific principle is also applied.


  • Detects conductance of the skin
  • Finger Straps for electrodes

Platforms Supported:

  • Arduino
  • Raspberry Pie

Something you should know about :

GSR (Galvanic Skin Response)is not only used to monitor your emotional arousal, in psychology, you can also use the data from the GSR sensor to analyze to determine whether he is lying or not. In fact, the GSR sensor has been widely used in our life, especially in some medical facilities, psychology, polygraph, etc.

Community Projects

Mouse Fatigue Estimation by GSR and EMG Values w/ TensorFlow

The author Kutluhan Aktar shared his work on Hackster. The reason for this project is that he feels precipitous pain from his forearm due to using the mouse for a long time about six hours, so he wanted to try to use the GSR (Galvanic Skin Response) and EMG (Electromyography) to predict his muscle soreness levels.

This videos from the Kutluhan Aktar project (From Hackster)

In his project article, he shows all the hardware that he needs for the GSR project

Seeed Studio Wio Terminal

Seeed Studio Grove – GSR sensor

Seeed Studio Grove – EMG Detector

Seeed Studio Grove – Universal 4 Pin Cable

SD Card

3D Printer

20000 mAh 3 Pro Type-C Power Bank

And Kutluhan Aktar shows the software apps and online services in his GSR/EDA project article too including the coding part.

This is a part of the code shared by Kutluhan Aktar (From his Hackster blog)

In his project article, he explains all the steps including assembling parts and programming GSR (Galvanic Skin Response) and EMG (Electromyography), you can find more information at the link below:

Kutluhan Aktar Grove – GSR sensor Project article

Bee: The Ultimate Medical Solution

In this GSR/ EDA project, Raunak Singh builds a healthcare solution cuz. Before the COVID-19 Pandemic, the importance of healthcare was already well-noted, in the hospital with so many sicknesses or patients who need attention, in a short period maybe like 5 minutes, can be the difference between life and death, and the nurse has to go to each patient’s room and must do the simple measurement that a computer could do when she could be saving more time by helping patients. And that’s the purp

(From Raunak Singh Hackster Article)

His article also shows all the Hardware that used in this GSR project like

Arduino MKR WiFi 1010

Heart rate Finger Clip Sensor

EMG Sensor

GSR sensor

Microchip Technology AVR-IoT WA Development Board

LiPo Battery 3.7v

MikroE Heart Rate 8 click

And This is the concept map of his GSR project

Read more about the full details in Raunak Singh Hackster: Bee: The Ultimate Medical Solution

More Resources & Tutorials

Still overwhelmed? Visit our Grove – GSR sensor for a visual guide! To end off, also be sure to check out the collection of resources and articles. Seeed Studio has many different Grove sensors not only GSR sensors, such as Thermal Imaging Camera, etc

If you are interested to create your own project, you can check our website at Seeed Studio. There are many different and interesting hardware combinations to create a fun project. And have fun!

Getting Started Tutorials

Getting Started with Grove GSR sensor – GSR sensor

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March 2022