voodoospark #23 using spark-io

sparkio-temp.js

var five = require("johnny-five"),
  Spark = require("spark-io"),
  board, sensor;

// Create Johnny-Five board connected via Spark
board = new five.Board({
  io: new Spark({
    token: process.env.SPARK_TOKEN,
    deviceId: process.env.SPARK_DEVICE_ID
  })
});

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

  sensor = new five.Sensor({
    pin: "A7",
    freq: 1000
  });

  sensor.on("data", function() {
    // TMP36
    var mV = this.value * (3300/1024);
    var celsius = (mV - 500) / 10;
    var fahrenheit = celsius * (9 / 5) + 32;
    console.log(celsius + "°C", fahrenheit + "°F");
  });

});