Multi

The Multi class constructs objects that represent a single "breakout" module attached to the physical board. The "breakout" module will itself contain 2 or more components, such as a thermistor and a hygrometer, or an altimeter and a pressure sensor.

Supported multi sensor modules:

• BMP180
  • Adafruit
  • Sparkfun
• MPL115A2
  • Adafruit
  • Sparkfun
• SI7020
  • Tessel

This list will continue to be updated as more component support is implemented.

Parameters

• General Options

  Property	Type	Value/Description	Default	Required
  controller	string	BMP180, MPL115A2, SI7020. The Name of the controller to use		yes

Shape

Some of these properties may or may not exist depending on whether the multi sensor supports it.

{ 
  barometer: An instance of `Barometer` class. READONLY
  hygrometer: An instance of `Hygrometer` class. READONLY
  temperature: An instance of `Temperature` class. READONLY
}

Component Initialization

BMP180

new five.Multi({
  controller: "BMP180"
});

MPL115A2

new five.Multi({
  controller: "MPL115A2"
});

SI7020

new five.Multi({
  controller: "SI7020"
});

Usage

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

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

  var multi = new five.Multi({
    controller: "MPL115A2"
  });

  multi.on("data", function(err, data) {
    console.log("Barometer: %d", this.barometer.pressure);
    console.log("Temperature: %d", this.temperature.celsius);
  });
});

API

The Multi class does not have an explicit API. Refer to the individual components for their APIs

Events

• data The "data" event is fired as frequently as new data becomes available.

• change The "change" event is fired whenever a corresponding "change" is fired from a component.