PJRC Teensy 4.0 Beta Breakout Board and Audio Adapter Version D compatible ?


Well-known member
A quick question. Was using the PJRC Teensy 4.0 beta version breakout board with a couple of audio adapter version D. Cannot access SD card on audio adapter with WavFilePlayer. Tried various SPI settings with no luck. Version B Audio adapter works fine. Both of the version D adapters work fine with the T4.1 breakout board. Searched the vast forum but could not find anything obvious Using Arduino 1.8.19 and TD 1.59B2...

Version D responds with:
Unable to access the SD card
That breakout board is wired for Rev B or Rev C. At the time it was made (mid 2019), Rev B was the latest version.

Rev D won't work (unless wires are used to route the signals where needed).
Thanks, kinda what I suspected. Just wanted to make sure I was not missing something.