manitou
Senior Member+
Hi, I’ve tried adding that line, there is still no audio comes out.
you should verify each of your WAV files is in proper format (see post #17). Try running the IDE examples > audio > WavFilePlayer with Teensy WAV files (SDTEST1.WAV ...), then use your WAV files in loop()
Each teensy has a unique MAC address, see
https://forum.pjrc.com/threads/5759...ess-Teensy-4-0?p=221833&viewfull=1#post221833
you could use the mac address to distinguish each of your T3.2 devices instead of B0 and B1. Your sketch should only use Wire.begin(myID); -- delete the other Wire.begin() statements.
Confirm: you have 4 T3.2, each with their own audio shield and SD card, and each SDA/SCL pin connected to the nodemcu SCL and SDA pins, and all share a common GND. The SDA and SCL lines should have pullup resistors (2.2K?) to 3.3v.