This is the first in a series of guides that will look at digital circuits: what they are, how they work, and how we can make use of them.
We’ll start with the basics and build up to more and more powerful circuits, all based on what we’ve covered in earlier parts of the series. The plan is to end up with a simple 8 bit processor designed, built, and functioning.
As we go, in true maker fashion, we’ll build what we need to help in our exploration. Schematics, build videos, parts lists, and where to find everything will be provided so I hope you will follow along and find out what really goes on in that little black chip on your Arduino, Feather, Trinket, or whatever board you use. It’s fun and exciting, and it’s the building blocks that all of computing is built on. At least until the not too distant future.*
That’s where we’re headed, but we’ll start simply. With numbers.
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, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, 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.