Arduino is a good platform if you want to start working with electronics. The platform, specifically the Arduino Nano family, is a set of small form-factor boards that act as microcontrollers ...

As the Arduino Nano and Micro cost the same ($24.90), deciding ... twelve analog inputs and at most seven PWM outputs. If you're working with an SPI component, you'll also find the Micro's ...

The build is open-source, and designed to work with strings of 60, 120, or 180 WS2812B LEDs. An Arduino Nano is charged with running the show, capturing audio via its analog-to-digital converter.

Although a “CommsLink” module providing an RS-232 port was available back in the day, it’s become hard to find, inspiring [James] to design a completely new module based on an Arduino Nano.