Then, an Arduino board might be exactly what you're looking for. This open-source hardware platform comes in a multitude of versions, from the classic Uno to the tiny Nano to the powerful Giga ...

[Andrew] writes in with his Z80 single-board computer made ... mimicking the pins found in an Arduino Uno. The code, available on GitHub, includes an extensive explanation and walkthrough over ...

[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 ...