Product Description The 15mm Piezo Ceramic Elements Sound Sensor is a compact and lightweight piezoelectric disc designed for sound, vibration, and knock detection. Built on a 15mm ceramic element, it can also function as a buzzer when powered with an AC signal. It is widely used in DIY electronics, IoT projects, musical instruments, alarms, and robotics for detecting knocks or acoustic signals. This sensor is easy to integrate with Arduino, ESP32, STM32, and Raspberry Pi (via ADC), making it ideal for low-cost vibration and sound-based projects. Available in Bangladesh from PowerMark Solution, this sensor is suitable for both hobbyists and professional developers. Features 15mm piezoelectric ceramic disc sensor Detects vibrations, knocks, and sound waves Dual-use: sensor (input) or buzzer (output) Lightweight, compact, and durable design Provides analog voltage signal output Compatible with Arduino, ESP32, STM32, Raspberry Pi (via ADC) Low power consumption and reliable operation Cost-effective component for IoT and robotics projects Applications Knock and vibration detection Acoustic/sound sensor modules DIY buzzers and alarm circuits Musical instrument pickups (drum pads, guitars, etc.) Smart security and monitoring systems Robotics and motion feedback systems STEM learning and educational projects Technical Specifications Specification Details Element Type Piezoelectric ceramic disc Diameter 15mm Thickness ~0.3–0.5mm Operating Voltage 3V – 24V (as buzzer) Output Type Analog voltage signal Frequency Response Wideband acoustic & vibration Package Includes 1 × 15mm Piezo Ceramic Elements Sound Sensor Documentation Works with Arduino IDE (analog signal can be read from A0 pin). Can be used as a knock/vibration detector or as a buzzer. May require external amplifier for weak acoustic signals. FAQs Q1: What does the 15mm Piezo Ceramic Sensor detect?A: It detects sound, vibrations, and knocks. Q2: Can it act as a buzzer?A: Yes, when powered by AC/DC signal. Q3: Is it analog or digital?A: It outputs an analog voltage signal. Q4: Can I use it directly with Arduino?A: Yes, connect to an analog input pin. Q5: Does it need an amplifier?A: For knock detection, no. For weak sound detection, yes. Q6: What is its diameter?A: 15mm. Q7: Is it durable?A: Yes, it is reusable and long-lasting. Q8: Can it be used for IoT?A: Yes, for sound/vibration monitoring in IoT devices. Q9: What is the voltage range for buzzer mode?A: Typically 3V – 24V. Q10: Can it be used in musical projects?A: Yes, commonly used in acoustic pickups and drum pads.
