Hello!
I've got a brand new Teensy 4.0 and a new Audioshield Rev D, but unfortunately there's no sound coming from the audio jack using headphones. I only hear a very fast crackling/ticking that get's louder as I increase the sgtl5000_1.volume.
I've tested it with the example code from "Audio/Tutorial/Part_1_02_Hardware_Test" and the "Audio/Synthesis/Guitar" example on both Teensyduino 1.51 and 1.52 Beta #4 on MacOS.
I'm measuring 1.5V between the L/R output and GND, but it also shows this level before I enable the sgtl5000_1. I'm not sure whether this is supposed to be like that? I would have expected 0V before I enable it. Pin 18 and 19 give 3.3V as expected.
What I'm wondering is whether the microphone line on the headphones can be the culprit? Everything points at a hardware failure but both teensy and shield are brand new. Any thoughts?
I've got a brand new Teensy 4.0 and a new Audioshield Rev D, but unfortunately there's no sound coming from the audio jack using headphones. I only hear a very fast crackling/ticking that get's louder as I increase the sgtl5000_1.volume.
I've tested it with the example code from "Audio/Tutorial/Part_1_02_Hardware_Test" and the "Audio/Synthesis/Guitar" example on both Teensyduino 1.51 and 1.52 Beta #4 on MacOS.
I'm measuring 1.5V between the L/R output and GND, but it also shows this level before I enable the sgtl5000_1. I'm not sure whether this is supposed to be like that? I would have expected 0V before I enable it. Pin 18 and 19 give 3.3V as expected.
What I'm wondering is whether the microphone line on the headphones can be the culprit? Everything points at a hardware failure but both teensy and shield are brand new. Any thoughts?