{"product_id":"35mm-piezoelectric-sensortransducerbuzzer-vibrating-disc-for-projects","title":"35mm Piezoelectric Sensor\/Transducer\/Buzzer - Vibrating Disc for Projects","description":"\u003ch1\u003e35mm Piezoelectric Disc – Sounder \u0026amp; Vibration Sensor for DIY Projects\u003c\/h1\u003e\n\n\u003cp\u003eThis 35mm piezoelectric disc works as both a sounder (buzzer) and a vibration sensor. When driven with an AC signal, it produces clear tones for alarms or musical notes. In reverse, it generates a voltage when tapped, making it useful for knock sensors or contact mics. A versatile component for Arduino, Raspberry Pi, and general electronics prototyping.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e35 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eResonant Frequency\u003c\/td\u003e\n\u003ctd\u003e2.6 kHz ± 0.5 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCapacitance at 1 kHz\u003c\/td\u003e\n\u003ctd\u003e25 nF ± 30%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax Operating Voltage\u003c\/td\u003e\n\u003ctd\u003e30 Vp-p\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eBrass plate, ceramic element\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-20°C to +70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eArduino tone generator with simple PWM output\u003c\/li\u003e\n  \u003cli\u003eKnock sensor for security systems or interactive projects\u003c\/li\u003e\n  \u003cli\u003eContact microphone to capture acoustic vibrations\u003c\/li\u003e\n  \u003cli\u003eElectronic doorbell or alarm buzzer circuit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eWorks directly with 5V microcontrollers like Arduino Uno, Nano, and Mega. For louder output, pair with a transistor driver circuit from a 3.3V board like ESP32 or Raspberry Pi Pico. The disc can also interface with Raspberry Pi via a simple ADC for vibration sensing.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eFor sound output, connect the ceramic side to a PWM-capable pin through a 1kΩ resistor, and the brass disc to ground. A protective diode is not needed for low-voltage driving. When using as a sensor, wire in parallel with a 1MΩ resistor to bleed off charge.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, connect to any PWM pin with a resistor for buzzer functions, or use as an analog input with a pull-down resistor for knock sensing.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I use this as a microphone?\u003c\/summary\u003e\u003cp\u003eIt can act as a contact microphone; attach to a surface to detect vibrations, but output voltage is low and needs an amplifier for audio recording.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow loud is this buzzer?\u003c\/summary\u003e\u003cp\u003eWhen driven at resonance with a full 5V square wave, it produces around 80 dB at 10 cm – comparable to a standard sounder but without a built-in oscillator.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53445018616173,"sku":"CDN-0727","price":25.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_9ec592ac-d484-4b69-ac21-0a449f000710.jpg?v=1781512854","url":"https:\/\/compoden.com\/products\/35mm-piezoelectric-sensortransducerbuzzer-vibrating-disc-for-projects","provider":"Compoden","version":"1.0","type":"link"}