{"product_id":"adafruit-i2s-amplifier-bff-add-on-for-qt-py-and-xiao","title":"Adafruit I2S Amplifier BFF Add-On for QT Py and Xiao","description":"\u003cp\u003eOur \u003ca href=\"\/nl\/collections\/qt-py-xiao-development-boards\"\u003eQT Py boards\u003c\/a\u003e are a great way to make very small microcontroller projects that pack a ton of power - and now we have a way for you to add an I2S 3 Watt amplifier, for high-quality audio playback, that can fit on the back of your miniature dev board. It uses just three GPIO pins that do not intersect with the I2C\/UART or SPI port.\u003c\/p\u003e\n\u003cp\u003eWe call this the Adafruit I2S Amp BFF - a \"Best Friend Forever\". When you were a kid you may have learned about the \"buddy\" system, well this product is kinda like that! A board that will watch your QT Py's back and give it more capabilities.\u003c\/p\u003e\n\u003cp\u003eThis PCB is designed to fit onto the back of any QT Py or Xiao board, it can be soldered into place or use pin and socket headers to make it removable. Onboard is a MAX98357 audio amplifier and picoblade-compatible connector for plugging in a 4 or 8-ohm speaker. We use A0 for the audio data, A1 for the word select clock, and A2 for the bit clock. This pinout will work with ESP32 series, nRF52840 and RP2040 chipset boards. It won't work with the \u003ca href=\"https:\/\/learn.adafruit.com\/adafruit-qt-py\/pinouts\"\u003eATSAMD21 'original 'QT Py\u003c\/a\u003e because those pins on the SAMD21 are not I2S capable. However, you could cut and rewire the traces to connect to the I2S pads if desired - personally, we recommend just upgrading to an RP2040 QT Py instead.\u003c\/p\u003e\n\u003cp\u003eWe include some headers that you can solder to your QT Py. You can also pick up an \u003ca href=\"\/nl\/products\/short-female-header-kit-for-itsybitsy\"\u003eItsy Bitsy short female header kit\u003c\/a\u003e to make it removable but compact, you'll just need to trim down the headers to 7 pins long.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eComes as an assembled and tested PCB\u003c\/li\u003e\n\u003cli\u003eFor any QT Py or Xiao boards\u003c\/li\u003e\n\u003cli\u003eContains a \u003ca href=\"\/nl\/products\/adafruit-i2s-3w-class-d-amplifier-breakout-max98357a\"\u003eMAX98357 3 Watt audio amplifier\u003c\/a\u003e pre-configured for 'stereo' mix output and 9 dB gain which will work great for any project.\u003c\/li\u003e\n\u003cli\u003eConnect to the speaker output with a \u003ca href=\"\/nl\/products\/molex-pico-blade-2-pin-cable-200mm\"\u003epicoblade-compatible 2-pin cable\u003c\/a\u003e. We recommend this \u003ca href=\"\/nl\/products\/speaker-40mm-diameter-4-ohm-3-watt\"\u003e3W 4-ohm speaker\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eThere are various Arduino \/ CircuitPython \/ MicroPython libraries that can be used to talk to the I2S amplifier.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpeaker and QT Py are NOT included.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ciframe width=\"560\" height=\"315\" src=\"\/\/www.youtube.com\/embed\/8TaU8C-BVW4?start=409\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen=\"allowfullscreen\"\u003e\u003c\/iframe\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eResources\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/learn.adafruit.com\/i2s-amplifier-bff\"\u003eProduct Wiki\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":50847657361681,"sku":"ADA5770","price":4.7,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/6285\/6209\/files\/adafruit-i2s-amplifier-bff-add-on-for-qt-py-and-xiao-adafruit-ada5770-40620772720835.jpg?v=1735217496","url":"https:\/\/abcd3032.myshopify.com\/nl\/products\/adafruit-i2s-amplifier-bff-add-on-for-qt-py-and-xiao","provider":"Tayyab Zak","version":"1.0","type":"link"}