The brains of this festive little tree is an ATmega328P, which you probably recognize ... wherein [Tom] walks through designing the PCB using Inkscape and Fritzing. Want to whip up a little ...
The watch rocks a simplistic, bare bones design with the PCB ... ATmega328P, as seen in the popular Arduino Uno, and it’s paired with a DS3231M real-time clock module to keep accurate time. 13 ...