Galvanic Skin Response Grove GSR - Module
The Grove GSR (Galvanic Skin Response) Sensor Module is a unique biometric sensor that measures changes in skin conductivity caused by emotional stimuli, stress, or physical activity. By placing two finger electrodes on the user's fingers, it detects subtle variations in sweat gland activity — the same principle used in lie detector tests. With adjustable sensitivity, analog output, and a standard Grove 4-pin connector, it's perfect for biofeedback projects, stress monitoring, emotion detection, wearables, and educational research with Arduino, ESP32, and other microcontrollers.
موديول حساس GSR (الاستجابة الجلدية الجلفانية) من Grove هو حساس بيولوجي فريد يقيس التغيرات في التوصيلية الكهربائية للجلد الناتجة عن المحفزات العاطفية أو التوتر أو النشاط البدني. من خلال وضع قطبين على الأصابع، يكتشف التغيرات الدقيقة في نشاط الغدد العرقية — وهو نفس المبدأ المستخدم في اختبارات كشف الكذب. مع حساسية قابلة للضبط ومخرج تناظري وموصل Grove قياسي بأربعة أطراف، فهو مثالي لـ مشاريع التغذية الراجعة الحيوية ومراقبة التوتر وكشف المشاعر والأجهزة القابلة للارتداء والأبحاث التعليمية مع Arduino وESP32 والمتحكمات الأخرى.
The Galvanic Skin Response (GSR) Sensor Module is a fascinating biometric measurement device that opens the door to projects involving human emotion, stress detection, biofeedback, and physiological monitoring. The sensor works on the well-established principle of Galvanic Skin Response — also known as Electrodermal Activity (EDA) — which measures the changes in electrical conductance of the skin caused by sweat gland activity controlled by the sympathetic nervous system.
When a person experiences emotional arousal, excitement, fear, surprise, or stress, the body's sweat glands produce small amounts of moisture, which increases the skin's conductivity. The GSR sensor detects these subtle variations in real time, providing an analog voltage output proportional to the skin's conductance level. This is the same fundamental technology used in polygraph (lie detector) machines, clinical stress evaluation devices, and modern wearable wellness products.
The module comes with two metal finger electrodes (finger cots/sheaths) that are placed on the user's fingers — typically the index and middle finger — to make stable skin contact. An onboard potentiometer allows you to adjust the sensitivity of the sensor to match different users and applications. The output is provided as a clean analog voltage that can be read directly by any microcontroller's ADC (Analog-to-Digital Converter).
The standard Grove 4-pin connector makes integration extremely simple — just plug it into a Grove base shield, or connect to VCC, GND, and analog input pins on any Arduino, ESP32, ESP8266, Raspberry Pi, or STM32 board. The module supports both 3.3V and 5V operation, drawing less than 10mA, making it suitable for battery-powered wearable applications.
Whether you are building a stress meter for biofeedback, a DIY lie detector, an emotion-aware game controller, a meditation aid, a research tool for psychology experiments, or a wearable wellness device, this GSR sensor module gives you accurate, repeatable physiological data in a simple, accessible package.
Note: GSR readings are highly individual — they depend on skin type, hydration, ambient temperature, and personal variation. Calibration per user is recommended for reliable results.
Specifications
- Sensor Type: Galvanic Skin Response (GSR) / Electrodermal Activity (EDA)
- Measurement Principle: Skin conductance variation
- Operating Voltage: 3.3V / 5V DC
- Operating Current: < 10 mA
- Output Type: Analog voltage
- Interface: Grove 4-pin connector
- Sensitivity Adjustment: Onboard potentiometer
- Electrode Type: Two-finger metal electrodes (external finger cots)
- Signal Output: Skin conductance (analog signal)
- Operating Temperature: -10°C to +50°C
- Module Dimensions: 40 × 20 mm
- Compatibility: Arduino, ESP32, ESP8266, Raspberry Pi, STM32, and any MCU with ADC input
- Connection Type: Grove cable (compatible with Grove base shield or DuPont jumper wires)
Applications
- Biofeedback and meditation aids that respond to user stress levels
- DIY lie detector projects for educational and entertainment use
- Stress and anxiety monitors for personal wellness tracking
- Emotion-aware video games and VR experiences that adapt to player arousal
- Wearable wellness devices for tracking emotional state throughout the day
- Polygraph and forensic education in classroom and lab settings
- Psychology and neuroscience research into emotional response and stress
- Sleep and relaxation studies measuring autonomic nervous system activity
- Mindfulness and breathing apps with real-time physiological feedback
- Music and art installations that react to participants' emotional state
- Sports performance training monitoring stress and recovery
- Driver alertness systems in automotive DIY safety projects
- Educational STEM projects teaching biosignals and microcontroller integration
- Therapy and mental health support tools with biofeedback components
- Custom HCI (Human-Computer Interaction) experiments in design schools
- IoT health monitoring uploading GSR data to cloud platforms
- Smart home environments that adjust lighting or music based on mood
- Robotics interaction projects where robots respond to human emotional cues