27mm Piezoelectric Sensor Disc
Track high-frequency structural acoustic impacts in real time using the premium 27mm Piezoelectric Sensor Disc. Engineered for responsive mechanical feedback loops, this ultra-thin vibration transducer converts microscopic physical impacts, surface bends, and structural flexes directly into readable electrical voltage signals. Constructed with a high-durability brass backing substrate plate bonded to a fine lead zirconate titanate (PZT) ceramic layer, it generates a sharp voltage spike the moment structural strain occurs. This passive, low-power element operates without an active bias voltage supply, feeding analog waves directly into a signal conditioning operational amplifier or microcontroller analog input. It serves as the definitive hardware component choice for building electronic drum trigger pads, acoustic guitar pickups, home security window-vibration alarms, knock-detection sensor nodes, and DIY ultrasonic buzzers running on Arduino or ESP32 setups.
₹ 12
₹ 49
| : | |
| Made In : | India |
The 27mm Piezoelectric Transducer Sensor is a vibration and knock detection sensor that converts mechanical stress or vibration into an electrical signal. It is widely used in Arduino, ESP32, and embedded systems for detecting knocks, taps, impacts, and vibration changes.
This sensor is commonly used in security systems, touch-based interfaces, musical instruments, and structural vibration monitoring projects.
Key Features
- 27mm diameter piezoelectric disc sensor
- Detects vibration, knock, and mechanical impact
- Generates analog voltage output on stress
- High sensitivity to physical vibration
- No external power required for signal generation
- Easy integration with Arduino and ESP32
- Lightweight and compact design
- Low cost and highly durable
- Suitable for experimental and DIY projects
Technical Specifications
| Parameter | Specification |
|---|---|
| Sensor Type | Piezoelectric Transducer |
| Diameter | 27 mm |
| Output Type | Analog voltage signal |
| Operating Principle | Piezoelectric effect |
| Material | Ceramic + metal disc |
| Frequency Response | Wide vibration range |
| Power Requirement | Self-powered signal generation |
| Interface | Analog input (ADC required) |
| Compatibility | Arduino, ESP32, Raspberry Pi |
How to Use
- Connect one terminal to analog input pin
- Connect other terminal to ground (or signal conditioning circuit)
- Use resistor (1MΩ recommended) for stabilization
- Read analog values using microcontroller
- Detect spikes for knock or vibration events
- Calibrate threshold for specific application
- Avoid excessive mechanical stress on disc
Applications
- Knock detection systems
- Vibration monitoring systems
- Arduino and ESP32 projects
- Touch-sensitive interfaces
- Security and intrusion detection systems
- Musical instruments and drum pads
- Machine condition monitoring
- Structural vibration analysis
Package Includes
1 * Piezo Buzzer 27mm with Cable
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