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The Nano I/O Shield board has the same form factor as the Arduino UNO/arduino Leonardo
voltage regulator
or any computer
It is a special type of antenna that is used in devices that are operated through the wifi signals
Adafruit Electret Microphone Amplifier MAX4466 - Adjustable Gain 70097 The Nano I/O Shield boardElectret Microphone Amplifier Breakout MAX4466 with Adjustable Gain The Adafruit MAX4466 Electret Microphone Amplifier is a compact breakout that pairs an electret mic capsule with a low noise op amp for a clean, amplified analog audio signal you can read with any ADC. A small trimmer pot lets you set the gain from 25x to 125x, making it easy to tune sensitivity for your specific application. Technical specifications Chip MAX4466 (Maxim) Microphone
