Using Johnny-Five with Grove's Gas MQ2 component on the Intel Edison Arduino Breakout. This shield and component will work with any Arduino pin-out compatible hardware platform.

Run this example from the command line with:

node eg/grove-gas-mq2-edison.js
var five = require("johnny-five");
var Edison = require("edison-io");
var board = new five.Board({
  io: new Edison()

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

  // Plug the MQ2 Gas (Combustible Gas/Smoke)
  // module into the Grove Shield's A0 jack
  var gas = new five.Sensor("A0");

  // Plug the Piezo module into the
  // Grove Shield's D6 jack.
  var alarm = new five.Piezo(6);

  gas.scale(0, 100).on("change", function() {
    if (this.value > 60) {
      if (!alarm.isPlaying) {
        alarm.frequency(five.Piezo.Notes.d5, 5000);

Additional Notes

For this program, you'll need: Intel Edison Arduino Breakout Grove Base Shield v2 Grove - Buzzer Module Grove - Gas Module


Component Classes in this example:

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