Audio BFF Add- Board MAX98357 Speaker Extension Board for QT Py Development Board

Audio BFF Add- Board MAX98357 Speaker Extension Board for QT Py Development Board Description

This BFF comes with a TF card slot that can address to 64 GB of storage and a I2S 3 Watt amplifier, for high-quality audio playback, that can fit the back of your miniature dev board. All together uses the SPI port 4 GPIO pins for card CS, and I2S data, clock and left-right select.
This 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 A1 for the audio data, A2 for wordselect clock, and A3 for bitclock. The card connects over the SPI port: MOSI, MISO and SCK A0 for card select.
This pinout will work with for ESP32 series, nRF52840, and RP2040 chipset boards. It won't work with the ATSAMD21 'original 'QT Py because those pins 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.
We include some header that you can solder to your QT Py. You can also pick an Itsy Bitsy short female header kit to make it removable but compact, you'll just need to trim down the headers to 7 pins long.

For any QT Py or Xiao boards
Contains a MAX98357 3 Watt audio amplifier pre-configured for 'stereo' mix output and 9 dB gain which will work great for any project.
Use any Micro- card that supports SPI mode with one CS pin.
Connect to the speaker output with a picoblade-compatible 2-pin cable. We recommend this 3W 4 ohm speaker
There are various for / CircuitPython / MicroPython libraries can be used to talk to the card and I2S amplifier.
Color: Black
Material: PCB+Metal

Package Contents:
1 * MAX98357 Speaker Extension Board