{"title":"Adafruit Audio BFF Add-on for QT Py and Xiao","handle":"adafruit-audio-bff-add-on-for-qt-py-and-xiao","url":"/products/adafruit-audio-bff-add-on-for-qt-py-and-xiao","description":"The Adafruit Audio BFF is a compact add-on board that turns your QT Py or Xiao into a powerful audio playback device. It features a microSD card slot (up to 64 GB) and a MAX98357 I2S 3W amplifier, all designed to fit neatly on the back of your miniature dev board.\n\nThe board connects over the SPI port plus four GPIO pins — A0 for SD card select, and A1/A2/A3 for I2S data, word select, and bit clock. It's compatible with ESP32 series, nRF52840, and RP2040 chipset QT Py and Xiao boards.\n\nKey Features\n\n\nMAX98357 I2S Amplifier – 3W output, pre-configured for stereo mix with 9 dB gain\n\nMicroSD Card Slot – Supports up to 64 GB of storage via SPI (A0 for CS)\n\nI2S Audio Output – A1 (data), A2 (word select), A3 (bit clock)\n\nPicoBlade-Compatible Speaker Connector – Connect a 4 or 8 ohm speaker\n\nBFF Form Factor – Mounts directly to the back of any QT Py or Xiao board\n\nSoldered or Removable – Use pin and socket headers for a removable connection\n\nMulti-Platform Support – Arduino, CircuitPython, and MicroPython libraries available\n\n\nCompatibility\n\nESP32 series QT Py / Xiao boards\nnRF52840 QT Py / Xiao boards\nRP2040 QT Py / Xiao boards\n\n\n\nImportant: This board is not compatible with the ATSAMD21 \"original\" QT Py, as the required pins are not I2S-capable on that chip. Use an RP2040, ESP32, or nRF52840 QT Py instead.\n\n\nIdeal For\n\nCompact audio playback projects\nSound effects for props, costumes, and wearables\nPortable music players and notification devices\nInteractive art installations with audio feedback\n\n\nPackage Contents\n\n1× Adafruit Audio BFF Add-on (assembled and tested)\n1× Header set\n\n\n\nNote: Speaker, microSD memory card, and QT Py / Xiao board are not included.\n","vendor":"Adafruit","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":1469,"title":"Default Title","sku":"AF-5769","price":11.82,"on_sale":false,"in_stock":true,"available_quantity":102,"option1":"Default Title"}]}