cowboycub

Thanks y'all for your input! I washed the flux off (with a small paintbrush and 99% isopropyl) and no change. When checking the resistance, pin 10 reads about 630 while all other pins read about 470. Sounds like damage to the chip. Thank you...

Paul, many thanks for your quick response! 1. The initialization failed. 2. When testing each pin as the ledPin, I measured the voltage on all 4, and this led me to discover that the 10 pin is just holding a constant 3.3 volts. The other pins...

I'm in my first Teensy project with the infamous audio guestbook project. I had the project working, but then it stopped, and it seems to be because the SD card isn't detected. Using Teensy 4.0 and Audio Shield Rev D. The defines and SD card...