[Shawn] tapped into that system by running some wires up into the attic and connecting them to one of two control boxes, each with an ATMega328 ... out your own Arduino on a stick, either.

we start noticing some interesting components that are not commonly used on the Arduino. One of these things are the ICSP headers. They are those six pins that stick out, organized in a two-row ...

which offers a ATmega328 microcontroller with Optiboot (UNO) Bootloader. The Metro 328 has been created to provide extra features on top of what you would expect from the Arduino Uno offering ...