Vibration Sensor Module for Shock Detection

The Vibration Sensor Module detects mechanical vibration and outputs a digital 0 or 1 through an onboard LM393 comparator IC. When vibration exceeds the sensitivity threshold, the comparator switches output state and your GPIO reads the change. The vibration sensor runs on 3.3V to 5V DC and fits directly on any Arduino or ESP32 board without extra components.

The shock detector sensor sensitivity adjusts through an onboard potentiometer, so you can set the trigger threshold by turning the screw rather than editing code. A non-obvious detail is that the LM393 output is open-collector, meaning it pulls LOW on detection. Without a pull-up resistor the output floats in the HIGH state. Most Arduino GPIO pins have an internal pull-up you can enable with pinMode(pin, INPUT_PULLUP) to read cleanly.

Students and security project builders use the shock sensor module with Arduino IDE using digitalRead or attachInterrupt. StemVolt provide this module with the LM393 IC pre-soldered and potentiometer accessible.

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Features:

• LM393 comparator IC on board produces clean digital switching output on vibration
• Onboard potentiometer adjusts vibration sensitivity threshold without code modification
• Digital switch output toggles between 0 and 1 making GPIO reading straightforward
• Arduino-compatible interface uses standard three-pin connection for instant integration

Technical specifications:

Applications:

• Anti-theft vehicle alarm uses Vibration Sensor Module to trigger siren when car body is struck
• Industrial machine health monitor logs digital output pulses to detect bearing vibration anomalies
• Parcel tamper detector fires a buzzer when the shock sensor module detects an impact during shipping

Package includes:

• 1 x Vibration Sensor Module