WWZMDiB MAX4466 Electret Microphone Sensor Compatible with for Arduino Raspberry Pi ESP32 Sound Sensor Amplifier (3 Pcs)

Great microphones for lab projects. Much better range and quality than I was expecting.

Work very well. Adjtsble output but you need a very small screw driver to change the output amplitude.

As described

I used these mic/preamp modules in a project that I 3d printed, a Sound activated esp32 neopixel lamp. The modules arrived quickly and worked perfectly. The PCBs look great. There's a gain control on back. I have used 2 of the 3 I ordered and had no issue at all and the 2 lamps have been running nonstop since the modules arrived with no issues at all. I have not tried to record or listen to the audio this module outputs. I am just flickering lights with audio peaks.

It is a great little mic for D1mini projects using analog A0 (3.3vdc). using for sound activated smart LED bar.

no way to refund, the whole item is missing

the microphones work and are simple to set up

This is a copy of the Adafruit model 1063, well actually it's almost a copy. The schematic shown in the product description was copied from the Adafruit GitHub repo and it shows the non-adjustable gain resistor R7 as 22 K. When combined with the 100 K pot this would give a gain of about 25 to 125. However, all three microphones I received have a 2.2 K resistor for R7, decreasing the gain to a range of 2 to 100. But in reality the pots don't go to 100 K, I tested 85 K, 93 K and 96 K. So the maximum gain could be as low as about 87. I wasn't able to get enough gain so I cut the trace to R7 and soldered a 20 K in series. Now it works better, but that was a lot of work to fix a dumb mistake. If you're connecting this to a NodeMCU or Weemos D1 or some board with a built in voltage divider on the ADC and you're ok with a signal that's about one third the full range, this might work for you, otherwise get the one from Adafruit.

Funciona muy bien y si tiene buena sensibilidad para interactuar con la respuesta de sonidos