Electret Microphone Circuit Arduino

The sparkfun electret microphone breakout couples an electret microphone 100hz 10khz with a 60x mic preamplifier to amplify the sounds of voice claps door knocks or any sounds loud enough to be picked up by a microcontroller s analog to digital converter.

Electret microphone circuit arduino. As stated the microphone needs power in order to operate. The amplifier has excellent power supply noise rejection so this amplifier sounds really good and isn t nearly as noisy or. For the amplification we use the maxim max4466 an op amp specifically designed for this delicate task. The positive terminal goes into an analog terminal of the arduino.

The 1063 is an electret microphone amplifier with adjustable gain. This electret microphone in particular needs 2 2v of power in order to. An electret microphone is a device that uses two conducting plates to capture sound waves and translate them into electrical waves. 1713 add an ear to your project with this well designed electret microphone amplifier with agc.

Components 1 x electret microphone adafruit max4466 1 x arduino uno 1 x breadboard jumper wires setup arduino sketch inspect serial monitor 9600 for sensor values converted to volts. How to connect the microphone circuit to an arduino. The circuit starts with the electret microphone. This fully assembled and tested board comes with a 20hz to 20khz electret microphone soldered on.

Electret microphone amplifier simple arduino example to print out noise level values using a microphone adafruit max4466. Adafruit industries unique fun diy electronics and kits electret microphone amplifier max9814 with auto gain control id. The complete circuit is shown below. The output signal again comes from pin 5 of the lm386 ic.

This fully assembled and tested board comes with a 20 20khz electret microphone soldered on. The electret microphone reads amplitude not volume. We will connect it in our case to a0 of the analog terminal. An electret microphone is an omnidirectional microphone which means it can capture sound from all directions.