rbwilcoxon11
New member
I am working on a project using the microphone of an android headset accessory, connecting it to a sparkfu opamp, and the into the line in of a teensy audio board.
I am able to receive audio output from the teensy to the headset earpiece, but am having trouble getting the microphone signal to the teensy. Everything seems to be wired correctly (grounds are correct, mic is plugged into op amp input, output is connected to line in on teensy, op amp is receiving power and is grounded). the Voc between ground and output on the op amp is 2.6v, but does not change when microphone is in use.
Any thoughts on my next steps? I have tripple checked my wiring (and confirmed the headset wiring with the android spec), and believe this has something to do with things I don't know about.
Thanks!
I am able to receive audio output from the teensy to the headset earpiece, but am having trouble getting the microphone signal to the teensy. Everything seems to be wired correctly (grounds are correct, mic is plugged into op amp input, output is connected to line in on teensy, op amp is receiving power and is grounded). the Voc between ground and output on the op amp is 2.6v, but does not change when microphone is in use.
Any thoughts on my next steps? I have tripple checked my wiring (and confirmed the headset wiring with the android spec), and believe this has something to do with things I don't know about.
Thanks!