It’s a significant update. The Arduino UNO and Arduino Mega 2560 update the Duemilanove and Mega respectively. They now use an ATMega8U2 instead of an FTDI USB to serial converter chip.

The build relies on that old stalwart, the Arduino Uno, to run the show ... Displaying the time is done via the use of two analog meters, each fitted with a custom backing card.

There are also other Arduino boards capable of switching between different resolutions, such as the Uno R4 Minima that can ...