DFRduino M0 Audio Expansion Shield

DFRduino M0 Audio Expansion Shield features Wolfson's WM8978 audio processor with HI-FI DSP, 3D surround, 5-band balance, and a programmable notch filter for noise reduction. Leveraging DFRduino M0's hardware, it brings HI-FI codec to Arduino, supporting dual-channel playback, SD storage, MONO recording, and 3W PA—no MP3 module needed. It’s efficient in serial resources, flexible, and easy to use. With standard IIS interface, on-board MIC, 3.5mm jack, and left/right speakers (for 3W trumpets), it’s only compatible with DFRduino M0/Bluno M0 (not support common Arduino microcontrollers).