Detect Motion, Shock, and Taps with a Flexible Piezo Film Sensor

The Piezo Vibration Sensor Large is a simple film-based sensor for detecting flex, vibration, taps, impact, and movement. It is a useful part for trigger inputs, motion events, and low-part-count sensing circuits.

As the piezo film moves, it creates an AC signal that can be read with the right conditioning. This large version offers a straightforward way to sense motion without adding a full IMU or accelerometer module.

Why you'll love it

• Flexible piezo film sensor: Good for vibration, tap, and shock events
• Large format: Helpful when you want an easy-to-mount sensing strip
• Simple two-wire output: Easy to test with analog or comparator circuits
• Can act like a switch or sensor: Useful for impact alarms and trigger inputs
• No active electronics onboard: Lets you design the front end to match your project

What you can build

Great for knock sensors, vibration alarms, interactive props, impact logging, tamper detection, and simple motion-triggered inputs.

Starter bundles

Pair it with a resistor network, comparator or analog input, and a microcontroller board for threshold-based triggers or analog logging.

Recommended add-ons

Useful add-ons include resistors, protection parts, microcontroller boards, cable leads, and mounting tape or brackets.

Technical specifications

Pinout & usage notes

This is a two-pin passive sensor. Connect it to an analog front end, comparator, or protected ADC input. Add a resistor path to keep the signal in a safe range for your circuit.

Resources & support

Official SparkFun product page | SparkFun hookup guide

What’s in the box

1 × Piezo Vibration Sensor Large

Frequently Asked Questions