{"id":8530799657113,"title":"Adafruit PDM MEMS Microphone Breakout Board, 3492","handle":"adafruit-pdm-mems-microphone-breakout-board-3492","description":"\u003ch3\u003eAdafruit PDM MEMS Microphone Breakout Board, 3492\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eAdafruit MEMS PDM Microphone Description: Here is a pretty exotic microphone\nfound on many finished products, but relatively little as a DIY module. This\nis not an analog microphone or I2S microphone. This microphone does not\ndeliver an analog output signal like an electret microphone and is therefore\nideal for use with microcontrollers without analog input. The output is\ndigital, but it is not PWM or I2S signal. We are talking about PDM output for\npulse density modulation. To work properly, your microcontroller must have a\nPDM input, which is the case with most 32-bit cards currently available. The\nPDM looks like a 1-bit PWM signal. The module must receive a clock with a\nfrequency between 1 and 3 MHz and as output a square signal synchronized with\nthe clock is obtained. The logical output is 0 or 1 and the square signal\ngives density to get a corresponding analog value. There are different methods\nto use these microphones: Your microcontroller has matching inputs and you\nhave a suitable library that converts the data and gives you an analog value\n(ideal situation) Your microcontroller has matching inputs that give you\nvalues you need to convert (there are code examples on the tutorial for\nATSAMD21-based cards) Your microcontroller does not have a PDM input, you need\nto find a way to communicate the microphone with your card (here is an example\nwith an Attiny85). You can also generate the watch yourself, add an analogue\nfilter to the data output and play the analog value. No matter which choice\nyou choose, check the capabilities of your hardware before starting. These PDM\nmicrophones can be difficult to master. Technical data: Voltage: 1.8V\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003eMEMS Mikrofon\u003c\/li\u003e\n \u003c\/ul\u003e","published_at":"2025-09-25T00:37:46+10:00","created_at":"2025-09-25T00:37:42+10:00","vendor":"Adafruit","type":"Microphone Elements","tags":["industryDE_Sep2025"],"price":13000,"price_min":13000,"price_max":13000,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":45743639953561,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"de-B079Q8G7N1","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Adafruit PDM MEMS Microphone Breakout Board, 3492","public_title":null,"options":["Default Title"],"price":13000,"weight":20,"compare_at_price":null,"inventory_management":"shopify","barcode":"791954231885","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/soundstores.net\/cdn\/shop\/files\/de-B079Q8G7N1.jpg?v=1775750666","\/\/soundstores.net\/cdn\/shop\/files\/71uBuQ0g9YL.jpg?v=1758725073","\/\/soundstores.net\/cdn\/shop\/files\/7101D1RJPbL.jpg?v=1758725078","\/\/soundstores.net\/cdn\/shop\/files\/71QhacKinaL.jpg?v=1758725078"],"featured_image":"\/\/soundstores.net\/cdn\/shop\/files\/de-B079Q8G7N1.jpg?v=1775750666","options":["Title"],"media":[{"alt":null,"id":34627264413849,"position":1,"preview_image":{"aspect_ratio":1.332,"height":728,"width":970,"src":"\/\/soundstores.net\/cdn\/shop\/files\/de-B079Q8G7N1.jpg?v=1775750666"},"aspect_ratio":1.332,"height":728,"media_type":"image","src":"\/\/soundstores.net\/cdn\/shop\/files\/de-B079Q8G7N1.jpg?v=1775750666","width":970},{"alt":null,"id":34627264446617,"position":2,"preview_image":{"aspect_ratio":1.332,"height":728,"width":970,"src":"\/\/soundstores.net\/cdn\/shop\/files\/71uBuQ0g9YL.jpg?v=1758725073"},"aspect_ratio":1.332,"height":728,"media_type":"image","src":"\/\/soundstores.net\/cdn\/shop\/files\/71uBuQ0g9YL.jpg?v=1758725073","width":970},{"alt":null,"id":34627264512153,"position":3,"preview_image":{"aspect_ratio":1.332,"height":728,"width":970,"src":"\/\/soundstores.net\/cdn\/shop\/files\/7101D1RJPbL.jpg?v=1758725078"},"aspect_ratio":1.332,"height":728,"media_type":"image","src":"\/\/soundstores.net\/cdn\/shop\/files\/7101D1RJPbL.jpg?v=1758725078","width":970},{"alt":null,"id":34627264577689,"position":4,"preview_image":{"aspect_ratio":0.707,"height":1871,"width":1323,"src":"\/\/soundstores.net\/cdn\/shop\/files\/71QhacKinaL.jpg?v=1758725078"},"aspect_ratio":0.707,"height":1871,"media_type":"image","src":"\/\/soundstores.net\/cdn\/shop\/files\/71QhacKinaL.jpg?v=1758725078","width":1323}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eAdafruit PDM MEMS Microphone Breakout Board, 3492\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eAdafruit MEMS PDM Microphone Description: Here is a pretty exotic microphone\nfound on many finished products, but relatively little as a DIY module. This\nis not an analog microphone or I2S microphone. This microphone does not\ndeliver an analog output signal like an electret microphone and is therefore\nideal for use with microcontrollers without analog input. The output is\ndigital, but it is not PWM or I2S signal. We are talking about PDM output for\npulse density modulation. To work properly, your microcontroller must have a\nPDM input, which is the case with most 32-bit cards currently available. The\nPDM looks like a 1-bit PWM signal. The module must receive a clock with a\nfrequency between 1 and 3 MHz and as output a square signal synchronized with\nthe clock is obtained. The logical output is 0 or 1 and the square signal\ngives density to get a corresponding analog value. There are different methods\nto use these microphones: Your microcontroller has matching inputs and you\nhave a suitable library that converts the data and gives you an analog value\n(ideal situation) Your microcontroller has matching inputs that give you\nvalues you need to convert (there are code examples on the tutorial for\nATSAMD21-based cards) Your microcontroller does not have a PDM input, you need\nto find a way to communicate the microphone with your card (here is an example\nwith an Attiny85). You can also generate the watch yourself, add an analogue\nfilter to the data output and play the analog value. No matter which choice\nyou choose, check the capabilities of your hardware before starting. These PDM\nmicrophones can be difficult to master. Technical data: Voltage: 1.8V\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003eMEMS Mikrofon\u003c\/li\u003e\n \u003c\/ul\u003e"}