johnny-five/eg/sensor-fsr.js

Firmata based Arduino Programming Framework.

var five = require("../lib/johnny-five.js"),
    fsr, led;

(new five.Board()).on("ready", function() {

  // Create a new `fsr` hardware instance.
  fsr = new five.Sensor({
    pin: "A0",
    freq: 25
  });

  led = new five.Led(9);

  // Scale the sensor's value to the LED's brightness range
  fsr.scale([ 0, 255 ]).on("read", function() {

    // set the led's brightness based on force
    // applied to force sensitive resistor

    led.brightness( this.value );
  });
});