This guide presents several handy tools for our further exploration of digital circuits.

We look at several number systems that are relevant to digital circuits. We then turn our attention to Boolean logic, before finishing with an introduction to digital logic and basic logic gates.

The 555 is one of the most popular and flexible chips ever made. This guide will show you its inner workings and how to make use of it.

Control your HUE based lighting system based on time of day and motion. We use Feathers, Adafruit.io and a bit of code to create super-smart lights!

Phil Burgess’s digital sand code ported to CircuitPython, displaying on the Dotstar FeatherWing, using a custom Accelerometer FeatherWing.

Build a shield for the CircuitPlayground boards to allow the connection of additional hardware in a robust way.

Use CircuitPython to display points, images, text, and scrolling images on the 6x12 dotstar Featherwing.

The Sino:bit is an exciting new educational microcontroller board based on the opensource Calliope Mini and BBC Micro:bit projects, but designed specifically for a Chinese audience. Its features will be exciting for anyone interested or involved in teaching computing using this type of environment.

Generate animal sounds with the tiny GEMMA microcontroller! Build this owl or mod up your own toy and solder up this simple motion activated circuit.