This collision‑switch module is a simple and reliable mechanical impact sensor designed for smart robots, DIY electronics, and microcontroller projects. When the front switch is hit or bumped, the module outputs a LOW signal, and when no collision is detected, it outputs HIGH. It includes an indicator LED and an M3 mounting hole for easy installation on robot chassis. Features Mechanical collision/impact detection LOW output when collision occurs, HIGH output when idle Built‑in indicator LED (ON = collision detected, OFF = no collision) M3 mounting hole for easy installation on robot cars Compact size suitable for embedded projects Works with Arduino, ESP32, Raspberry Pi, micro:bit, and other 3.3V/5V MCU systems No Dupont wires included Technical Specifications Item Specification Working Voltage 3V – 12V Output Signal Digital HIGH / LOW Collision Behavior Collision → LOW, No collision → HIGH Indicator LED Lights ON when collision detected Mounting Hole M3 Module Size 2.5 cm × 1.9 cm Output Pin OUT (digital output) Compatibility 3.3V / 5V microcontroller systems Pin Description Pin Function VCC Power input (3V–12V) GND Ground OUT Digital output (HIGH/LOW) How It Works The module uses a mechanical spring‑type collision switch. When the switch is hit or pressed → contacts close → LOW output → LED ON When no collision occurs → contacts open → HIGH output → LED OFF This makes it ideal for robot bump detection, obstacle sensing, and vibration‑triggered events. Typical Applications Robot collision detection Obstacle‑avoidance systems Motion‑triggered alarms STEM education kits DIY electronics and smart toys Microcontroller learning modules Packing list Robot Collision Sensor Module
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