35mm Piezo Ceramic Element Sound Sensor

The 35mm Piezo Ceramic Element is a passive piezoelectric transducer that generates an electrical signal when subjected to mechanical vibration, tapping, bending, or impact. It can therefore be used as a simple sound, vibration, or impact sensor.

The element consists of a ceramic piezoelectric layer mounted on a metal disc. When the disc is mechanically deflected, the piezoelectric material produces a corresponding voltage signal. Conversely, applying an appropriate electrical signal can cause the element to mechanically vibrate and produce an audible tone.

Features

• 35mm piezoelectric ceramic disc
• Copper/metal-backed construction
• Sensitive to vibration and mechanical impact
• Suitable for contact microphone applications
• Can be used for electronic drum triggers
• Useful for acoustic instrument pickups
• Can detect tapping and surface vibration
• Can function as a simple tone-generating element
• Compact and lightweight design
• No internal mechanical contacts
• Suitable for DIY electronics and microcontroller projects
• Raw passive element requiring external circuitry

Applications

• Contact microphones
• Acoustic guitar and instrument pickups
• Electronic drum triggers
• Stompboxes and audio projects
• Vibration detection
• Impact detection
• Tap sensors
• Acoustic trigger systems
• DIY sound sensors
• Arduino and microcontroller projects
• Signal-generation experiments
• Piezoelectric sensing projects

How It Works / How to Use

1. Connect suitable lead wires to the piezo element's electrodes.
2. Mount the disc securely on the surface where vibration or impact needs to be detected.
3. Connect the sensor output to an appropriate signal-conditioning circuit.
4. For microcontroller applications, use suitable resistor, clamping, filtering, or amplification circuitry before connecting it to an ADC input.
5. Process the resulting voltage signal according to the requirements of the application.

Important Notes

• This is a raw, unshielded piezoelectric element, not a complete sensor module.
• Mechanical impacts can generate relatively high transient voltages. Do not connect the disc directly to sensitive 3.3V or 5V GPIO/ADC inputs without appropriate protection.
• A suitable signal-clamping and conditioning circuit should be used for microcontroller applications.
• Avoid excessive bending, flexing, crushing, or mechanical shock to the ceramic layer.
• Handle the element carefully, preferably by its outer edge.
• When soldering wires, use controlled heat and avoid prolonged heating of the ceramic and electrode areas.
• The stated 30Vp-p maximum should not be treated as a safe voltage for direct connection to a microcontroller input.
• Resonant frequency and electrical characteristics may vary within the stated tolerances.
• Product dimensions may have approximately 5% manual measurement deviation.
• Product images are for illustrative purposes and the actual product may vary slightly.

Package Includes

• 1 × Piezo Element 35mm