Help with reading from a Teensy3.5 microSD card

I recently purchased a Teensy 3.5 from Core Electronics and have been unable to find any working example code to read from the micro-SD card and play a .wav file. I do not intend to use the audio board, instead i wish to read directly from the micro-SD card on the teensy and output the music to a small amplifier circuit I made previously for another project.


Hi Phil,

Welcome to the forum!

I found a public repo on GitHub for this application by Paul, if you follow the comment editing to match option 3, you should be able to use this .ino for what you’re after.

//   3: Analog DAC - Connect the DAC pin to an amplified speaker

Please let us know if you run into any other issues with the Teensy. :grin:


Thanks for your help, the program works and I can output the audio to an amplifier and speaker.

You’re welcome Phil,

Make sure to let us know if there’s anything else that you need, have a Merry Christmas! :christmas_tree: