Adafruit Microphone Amplifier Breakout

by Bill Earl

published January 13, 2013, last edited March 08, 2024

posted in LEDs/ LED Matrices Arduino Compatibles Breakout Boards/ Amplifiers/Sound

Save Download

Intermediate

Product guide

Assembly and Wiring

Assembly:

The board comes with all surface-mount components pre-soldered. The included header strip can be soldered on for convenient use on a breadboard or with 0.1" connectors.

Prepare the header strip:

Cut the strip to length if necessary. It will be easier to solder if you insert it into a breadboard - long pins down.

Add the breakout board:

Place the breakout board over the pins.

(You can prop up the free edge of the board with some extra pins to better align it for soldering.)

And Solder!

Be sure to solder all pins for reliable electrical contact.

(For tips on soldering, be sure to check out our Guide to Excellent Soldering).

Wiring:

The amplifier has only 3 connections, so wiring is simple:

GND -> GND
VCC -> 3.3V
OUT -> AIN0

VCC can be anywhere from 2.4-5VDC. For the best performance, we use the 3.3v pin because it is the "quietest" supply on the Arduino.

The output will have a DC bias of VCC/2 so when its perfectly quiet, the voltage will be a steady VCC/2 (1.65v).