If you’re looking for a fun through-hole soldering project and want to build your own CPU, check out the updated Nibbler, built with multiple 7400 series ICs (74HC32, 74HC74, 74HC163, 74HC125, 74HC173, 74HC181, 74HC244, & 74HC377) and other components.
Nibbler is a 4 bit CPU built from standard 7400 series logic chips. Despite using only 17 chips, it can do some interesting tricks. It was designed by Steve Chamberlin (of Big Mess o’ Wires Fame) and was originally constructed using the wire-wrap process. This is an updated design that uses a printed circuit board and some component substitutions.
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.