Weewooday 6 Pieces Electret Microphone Amplifier Module MAX4466 Adjustable Gain Blue Breakout Board

Wanted a voice activation solution outside having to come up with a Java solution in Android, but didn't have enough resources on ESP32C3 to handle voice recognition well. Settled on a "whistle trigger" (using Goertzel constants; frequencies matching whistling on a b-flat scale triggers current on different I/O pins) instead. This worked out reasonably well, though I was foiled again by ceiling fans. Struggled to get consistent readings; eventually realized I had a ceiling fan pointed directly at the microphone; things were fine after turning off the fan.

Si funcionan

Sounds great, works well. I modified the circuit to provide a high-pass "pre-emphasis" for use with an AM transmitter. Circuit below

Received In brand new perfect condition. Well packaged items. These amplified condenser electric microphones didn’t work well for my project that I was working on. With that said, it’s probably me more than the product. I’m sure they could work ok on other devices. They are pretty nice . It’s amazing that you can adjust the mic gain with a very small pot located on the bottom of the board. Maybe I’ll have better luck on some future projects. Good luck!

Had no issues getting these to work for my project. Have bought others and they wouldn't work. I've used 3 so far and not one problem.