KY-031 Knock/Tap Sensor Module

The KY-031 Tap Sensor Module is a vibration and knock detection module designed to detect physical taps, knocks, or impacts. It uses a built-in vibration switch that changes state when the module experiences a shock or tap, making it ideal for interactive electronics, security systems, and motion-triggered projects.

Compatible with Arduino, ESP32, ESP8266, Raspberry Pi, STM32, and other microcontrollers, the KY-031 provides a simple digital output that can be easily read by a GPIO pin. Its compact design makes it perfect for breadboard prototyping and embedded applications.

Whether you're building a knock-activated light, vibration alarm, or interactive robotics project, the KY-031 offers an easy and reliable solution.

Features
Detects taps, knocks, and vibrations
Operating voltage: 3.3V–5V DC
Digital output signal
Fast response time
Compact PCB design
Breadboard-friendly
Simple three-pin interface
Easy integration with Arduino and other microcontrollers
Applications
Knock detection projects
Vibration sensing
Security alarm systems
Robotics
Home automation
Interactive electronic projects
Motion-triggered devices
Educational electronics experiments
DIY electronics
Compatible With
Arduino Uno
Arduino Nano
Arduino Mega
ESP32
ESP8266
Raspberry Pi
STM32
Other 3.3V and 5V microcontrollers
Package Includes
1 × KY-031 Tap Sensor Module