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Your cart is empty.Adafruit Electret Microphone Amplifier with Adjustable Gain is fully assembled and tested board comes with a 20-20KHz electret microphone soldered on. For the amplification, the Maxim MAX4466 is used, an op-amp specifically designed for this delicate task. The amplifier has excellent power supply noise rejection, so this amplifier sounds really good and isn't nearly as noisy or scratchy as other mic amplifiers breakouts are tried. Small trimmer pot on the back to adjust gain (25x to 125x). This breakout is best used for projects such as voice changers, audio recording/sampling and audio-reactive projects that use FFT. On the back, a small trimmer pot is also included to adjust the gain. You can set the gain from 25x to 125x. That's down to be about 200mVpp (for normal speaking volume about 6 inches away) which is good for attaching to something that expects 'line level' input without clipping or up to about 1Vpp, ideal for reading from a microcontroller ADC. The output is rail-to-rail so if the sounds gets loud, the output can go up to 5Vpp. Using it is simple: connect GND to ground, VCC to 2.4-5VDC. For the best performance, use the "quietest" supply available (on an Arduino, this would be the 3.3V supply). The audio waveform will come out of the OUT pin. The output will have a DC bias of VCC/2 so when its perfectly quiet, the voltage will be a steady VCC/2 volts (it is DC coupled). Connect the OUT pin directly to the microcontroller ADC pin. It is RoHS compliant.
Js
Reviewed in Belgium on November 28, 2023
Nickel, grâce a une transformée de Fourrier j’arrive à avoir ma fréquence dominante. Bon matériel
Christoph
Reviewed in Germany on January 7, 2021
1 von 5 funktioniert.Leider nicht empfehlenswert
Kyle
Reviewed in Canada on October 20, 2020
Good but took 2 months to ship
je-di
Reviewed in France on May 19, 2019
Très bien , manque une toute petite notice pour l'utiliser sans hésitation
Customer
Reviewed in the United States on January 7, 2017
In reality this is more likely about 4 1/2 stars instead of 5.Would have been nice to have the pins pre-soldered but was not a big issue. A small hassle to find example code to test this out but I would recommend going to the actual Adafruit site and running their supplied code.Yes, this microphone is not that sensitive. It is smaller than a quarter and didn't claim to be that sensitive. HOWEVER, for me at least, this is a very simple fix. For example, if you are trying to decipher something like a clap then do a little testing, and change the threshold corresponding to where you want to sense the clap from. All it takes is changing the threshold that "detects" the clap. Granted the distance from the microphone can make the clap register a very different value but that is not the microphone's fault. Use multiple at different position if you have to.Works well and does as described. Will update if I have issues.
Customer
Reviewed in the United Kingdom on April 28, 2016
Works well
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