LED - Digital Clock, HT16K33

Breadboard for "LED - Digital Clock, HT16K33"

Fritzing diagram: docs/breadboard/led-digits-clock-HT16K33.fzz

Run this example from the command line with:

node eg/led-digits-clock-HT16K33.js

var moment = require("moment");
var five = require("johnny-five");
var board = new five.Board();

board.on("ready", function() {
  var digits = new five.Led.Digits({
    controller: "HT16K33",
  });
  var toggle = 0;

  setInterval(function() {
    // Toggle the colon part: on for a second, off for a second.
    digits.print(time(toggle ^= 1));
  }, 1000);
});

function time(showColon) {
  var display = "    " + moment().format(
    showColon ? "h:mm" : "h mm"
  );
  return display.slice(-5);
}

Additional Notes

Learn More:

JavaScript: A Digital Clock with Johnny-Five

LED - Digital Clock, HT16K33

Breadboard for "LED - Digital Clock, HT16K33"

Additional Notes

License