I bought a bag of random 7-segment LED displays to play around with, originally with the idea of adding them to the address and data busses on my 6502 breadboard computer. That became a bit tricky, but I got thinking about adding them to a BBC micro:bit. You can buy excellent displays for the micro:bit, but I decided to to build and code my own from scratch, and like building and coding my own keypads, I learned a lot about an electronic component we take for granted.
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.