{"product_id":"passive-buzzer-shield-v1-wemos-d1-mini-alarm-tone-module","title":"Passive Buzzer Shield V1.0 for WEMOS D1 Mini — Alarm \u0026 Tone Module, 3.3V \/ 5V","description":"\u003ch2\u003ePassive Buzzer Shield V1.0 for WEMOS D1 Mini — Alarm \u0026amp; Tone Module\u003c\/h2\u003e\u003cp\u003eThis \u003cstrong\u003epassive buzzer shield\u003c\/strong\u003e plugs directly onto a WEMOS D1 Mini (ESP8266) and provides a passive piezoelectric buzzer for generating tones, alarms, and audio notifications in IoT and Arduino projects. Unlike active buzzers, the passive buzzer requires a PWM signal to produce sound, allowing you to play different frequencies and melodies using the \u003ccode\u003etone()\u003c\/code\u003e function or custom PWM code.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Board\u003c\/td\u003e\n\u003ctd\u003eWEMOS D1 Mini (ESP8266)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBuzzer Type\u003c\/td\u003e\n\u003ctd\u003ePassive piezoelectric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V \/ 5V (via D1 Mini)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl\u003c\/td\u003e\n\u003ctd\u003ePWM signal (D5 pin, configurable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForm Factor\u003c\/td\u003e\n\u003ctd\u003eD1 Mini shield (stacking compatible)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eActive vs Passive Buzzer\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003ePassive Buzzer (This Shield)\u003c\/th\u003e\n\u003cth\u003eActive Buzzer\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSound Control\u003c\/td\u003e\n\u003ctd\u003ePWM frequency (any tone)\u003c\/td\u003e\n\u003ctd\u003eFixed frequency (one tone)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMelody Support\u003c\/td\u003e\n\u003ctd\u003e✅ Yes\u003c\/td\u003e\n\u003ctd\u003e❌ No\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCode Required\u003c\/td\u003e\n\u003ctd\u003ePWM \/ tone() function\u003c\/td\u003e\n\u003ctd\u003eSimple HIGH\/LOW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose This Buzzer Shield?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e✅ \u003cstrong\u003eDirect D1 Mini plug-in\u003c\/strong\u003e — no wiring needed, stacks directly on WEMOS D1 Mini\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003ePassive buzzer\u003c\/strong\u003e — play any frequency, melodies, and custom tones\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003e3.3V \/ 5V compatible\u003c\/strong\u003e — powered by D1 Mini's onboard supply\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eStacking compatible\u003c\/strong\u003e — add more D1 Mini shields on top\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eIoT device alarm and notification sound\u003c\/li\u003e\n\u003cli\u003eESP8266 doorbell and alert system\u003c\/li\u003e\n\u003cli\u003eArduino melody and music player\u003c\/li\u003e\n\u003cli\u003eSmart home sensor alert buzzer\u003c\/li\u003e\n\u003cli\u003eClap switch and sound trigger feedback\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e1 × Passive Buzzer Shield V1.0 for WEMOS D1 Mini\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eWEMOS D1 Mini board not included.\u003c\/em\u003e\u003c\/p\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991439888619,"sku":"\u003cnone\u003e","price":4.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/buzzer-shield-v1-0-0-for-wemos-d1-mini-passive-alarm-module.webp?v=1761878682","url":"https:\/\/keszoox.com\/products\/passive-buzzer-shield-v1-wemos-d1-mini-alarm-tone-module","provider":"Keszoox","version":"1.0","type":"link"}