Read more: Battery Brands Ranked From Worst To Best The Arduino Uno Rev3 is the third revision ... WiFi's barrel jack is a set of three headers labeled OFF, GND, and VRTC. The OFF pin is designed ...

[Damian Peckett] has implemented an Apple ][, its 6502 processor, and a cassette port, all on an Arduino Uno. If that wasn’t enough, he also uses a PS/2 keyboard for input and outputs analog VGA.

But even after eliminating the Uno from your selection, you'll still be left with a wide array of Arduino boards to choose ... Micro feature 20 digital pins, labeled as RX, TX, D2 to D13, and ...

[Rafael] just made a little library that allows you to interface these modules to the Atmega328p-based Arduino UNO in order to gain some memory space. His work was actually based on the great ...