Today the word “smart watch” is one we all know, but this was the very first of that breed, from nearly 40 years ago. Whatever you may have thought the earliest smart watch was, I bet you were not expecting this marvelously geeky instrument (especially not from a vintage enthusiast who covers your weekly Bring A Loupe!). Let’s review, from Hewlett Packard, the intriguing and amazingly sophisticated HP-01.
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.