Sensor
SW-420 Vibration Sensor Module
The SW-420 is a vibration sensor module that detects motion, shock, or vibration. It's commonly used in security and alarm systems to sense unwanted movement or tampering.
Difficulty
Beginner → Advanced
Category
Electronics
How it works
How this sensor works
Inside the module is a spring-based sensor that normally keeps a circuit closed. When vibration or shock occurs, the spring moves and briefly breaks the circuit, which the module detects and outputs as a digital signal. The module also has an onboard potentiometer to adjust sensitivity.
Applications
Common use cases
Required
Components needed
Projects
Related projects
Build something with this sensor.
Detecting Vibration with SW-420 on Raspberry Pi Pico
Learn how to use the SW-420 vibration sensor with a Raspberry Pi Pico to detect shaking or movement....
View projectDetecting Vibration with SW-420 on ESP32
Learn how to use the SW-420 vibration sensor with an ESP32 to detect shaking or movement. This proje...
View projectTutorials
Video tutorials
Watch, follow along, then build your own version.
Detecting Vibration with SW-420 on Raspberry Pi Pico
How do security systems detect sudden movement or shaking? In this video, we'll...
Detecting Vibration with SW-420 on ESP32
How do security systems detect sudden movement or shaking? In this video, we'll...