Hello, I want to add a aux input to a nodemcu for making a sound active light. With a second jack so i can hook it up between the computer and the amp. What is the best way to do this? i have read that the - voltage can damage the board. Greathings

Sound active without microphone

Grumpy_Mike August 21, 2019, 7:42am 7

will the polarity not damage the capacitor?

No.