Finally 7 Vus and 11 patterns working on Arduino Nano and Arduino Pro Mini 3.3 volts. I say finally working because on the Arduino Nano when using Adafruit's Electret Microphone Amplifier - MAX4466 ...

It gives you a single part that can be placed on a schematic/board so you can simply solder in or plug in an Arduino pro mini or nano into your project. v1.3 Corrected several cosmetic issues and ...