[David Ruiz] decided to build a cutdown version for everyone’s favourite, the ATmega328. Due to the limited resources available, it’s not a direct port of Doom. [David] instead took some ...

[Marcelo] wanted to see how far he could overclock a microcontroller – in this case an ATMega328 – and ended up with a microcontroller designed for 20 MHz running at 30 MHz. To verify that his ...

The Adafruit Metro Mini is an Arduino compatible board with an ATmega328 CPU running at 16 MHz. You could use other boards in its place like a Raspberry Pi Pico or the new Raspberry Pi Pico 2.