Rev D with teensy 4.1

[rahulkumar]

Hi
In one of my project I want to record the voice using mic. I am using electra condenser mic purchased from the link https://thinkrobotics.com/products/electret-condenser-microphone?variant=31289555845206
When I record the voice rev d save a silent file to sd card

 

[PaulStoffregen]

First run the microphone test from the audio tutorial using headphones to listen. No point diving into the software if the problem is with hardware, so check that your mic really is working first.

If the mic is good and the problem is with the software, we can't help much unless you show us the code.