All this functionality is implemented in a light-weight SPI interface so that any Feather Board can play audio from an SD card. There’s also a special MIDI mode that you can boot the chip into that will read ‘classic’ 31250Kbaud MIDI data from the UART TX pin and act like a synth/drum machine – there are dozens of built-in drum and sample effects!

Once you’ve soldered the terminal blocks in you can connect any speakers you like, such as our 4Ω 3W or 8Ω 1W. Hey you can even use a surface transducer! Don’t forget to make sure you have a good strong 5V power supply – especially if you’re using the 3W 4 ohm speakers! Our 2.5A power plug is recommended.