pin.md

Pin

Breadboard for "Pin"

Fritzing diagram: docs/breadboard/pin.fzz

 

Run this example from the command line with:

node eg/pin.js

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

board.on("ready", function() {
  var events = [];
  var strobe = new five.Pin(13);

  temporal.loop(500, function(loop) {
    strobe[loop.called % 2 === 0 ? "high" : "low"]();
  });


  // Pin emits "high" and "low" events, whether it's
  // input or output.
  ["high", "low"].forEach(function(state) {
    strobe.on(state, function() {
      if (events.indexOf(state) === -1) {
        console.log("Event emitted for:", state, "on", this.addr);
        events.push(state);
      }
    });
  });

  var analog = new five.Pin("A0");

  // Query the analog pin for its current state.
  analog.query(function(state) {
    console.log(state);
  });
});

 

License

Copyright (c) 2012-2014 Rick Waldron [email protected] Licensed under the MIT license. Copyright (c) 2015-2023 The Johnny-Five Contributors Licensed under the MIT license.