[Nathan] sent in his speaker microphone project. Speakers and microphones are physically similar – usually mics are much smaller to allow decent high frequency response. In this case, [Nathan] wanted ...

Using a speaker as a microphone is a trick old enough to have become common knowledge, but how often do you see the hack ...

If you're looking for a way to turn your Bluetooth speaker into a Spotify Connect device, then this is the way.

The circuit design utilizes a regular speaker to be converted into a microphone Although it seems strange to think that a loudspeaker can be used as a microphone because of their difference in ...