I wrote a quick sketch to read the current time from the Maxim DS3231 on the Chronodot, and to cycle the display through hours, minutes, and seconds. The first digit of the hours fades in from black to red, then the second digit fades in as green and out to black. The first digit of the minutes fades in from black to green, then the second digit fades in as blue and out to black. And finally, the first digit of the seconds fades in from black to blue, and then the second digit fades in as red and out to black.
The display is nice and bright bright. I had to shoot this video through several pieces of tinted acrylic to stop my iPhone from adjusting the exposure. I didn’t realize this until I uploaded the video, but there is a bug in my code when accessing the DS3231 registers right as the minutes increment. But you get the idea, right?
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.