{"product_id":"passive-buzzer-unit","title":"Passive Buzzer Unit","description":"\u003cp\u003eBuzzer Unit is a mini passive buzzer unit, drived by 4KHz signal, that sounds up to 72dB within 10cm distance under rating input power.\u003c\/p\u003e\n\u003cp\u003eWith the feature of compact size, low-power consumption, awesome audio performance, and a protective housing. Applied for varied buzzer alarm scenario.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDrive signal:\u003c\/li\u003e\n\u003cli\u003e4KHz oscillation frequency\u003c\/li\u003e\n\u003cli\u003eUp to 72dB (within 10cm, at rating power)\u003c\/li\u003e\n\u003cli\u003eDrive signal: 4KHz 1\/2duty square wave\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInclude\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1x BUZZER Unit\u003c\/li\u003e\n\u003cli\u003e1x HY2.0-4P cable (20cm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecification\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecifications\u003c\/th\u003e\n\u003cth\u003eParameters\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrive frequency\u003c\/td\u003e\n\u003ctd\u003e4KHz 1\/2duty square wave\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower consumption\u003c\/td\u003e\n\u003ctd\u003e5V@86mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight\u003c\/td\u003e\n\u003ctd\u003e3.5g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGross weight\u003c\/td\u003e\n\u003ctd\u003e8.5g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct size\u003c\/td\u003e\n\u003ctd\u003e24 x 24 x 8mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePacking size\u003c\/td\u003e\n\u003ctd\u003e93 x 138mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003ePinMap\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eM5CORE - PORT B\u003c\/td\u003e\n\u003ctd\u003eG26\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBUZZER\u003c\/td\u003e\n\u003ctd\u003eSIGNAL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eExample\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eArduino\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ccode\u003e#include \u0026lt;Arduino.h\u0026gt;\u003cbr\u003e\u003cbr\u003e#define buzzer_pin 26\u003cbr\u003eint freq = 4000;\u003cbr\u003eint ledChannel = 0;\u003cbr\u003eint resolution = 10;\u003cbr\u003e\u003cbr\u003evoid setup() {\u003cbr\u003e ledcSetup(ledChannel, freq, resolution); \/\/Sets the frequency and number of counts corresponding to the channel. 设置通道对应的频率和计数位数\u003cbr\u003e ledcAttachPin(buzzer_pin, ledChannel); \/\/Binds the specified channel to the specified I\/O port for output. 将指定通道绑定到指定 IO 口上以实现输出\u003cbr\u003e ledcWrite(ledChannel, 512); \/\/Output PWM. 输出PWM\u003cbr\u003e}\u003cbr\u003e\u003cbr\u003evoid loop() {\u003cbr\u003e ledcWrite(ledChannel, 512); \/\/Output PWM. 输出PWM\u003cbr\u003e delay(3000);\u003cbr\u003e ledcWrite(ledChannel, 0); \/\/Output PWM. 输出PWM\u003cbr\u003e delay(3000);\u003cbr\u003e}\u003c\/code\u003e\u003c\/p\u003e","brand":"M5Stack","offers":[{"title":"Default Title","offer_id":39618442297427,"sku":"U132","price":4.95,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0174\/1800\/products\/1_9fed418d-31d4-4851-8bb7-93fb75b9d8c9.jpg?v=1640774058","url":"https:\/\/shop.pimoroni.com\/en-eu\/products\/passive-buzzer-unit","provider":"Pimoroni Ltd","version":"1.0","type":"link"}