johnny-five/eg/servo-slider.js

The JavaScript Robotics and Hardware Programming Framework. Use with: Arduino (all models), Electric Imp, Beagle Bone, Intel Galileo & Edison, Linino One, Pinoccio, Raspberry Pi, Spark Core, TI Launchpad and more!

var five = require("../lib/johnny-five.js"),
  board, slider, servo, scalingRange;

board = new five.Board();

board.on("ready", function() {

  scalingRange = [0, 170];

  slider = new five.Sensor({
    pin: "A0",
    freq: 50
  });

  servo = new five.Servo({
    pin: 10,
    range: scalingRange
  });


  // The slider's value will be scaled to match the servo's movement range

  slider.scale(scalingRange).on("slide", function(err, value) {

    servo.to(Math.floor(this.value));

  });
});