TI SensorTag2 (CC2650) to MQTT with Node.js (http://jpmens.net/2015/11/23/yet-another-fine-thing-sensortag-cc2650/)

freeboard-dashboard.json

{
	"version": 1,
	"allow_edit": true,
	"plugins": [],
	"panes": [
		{
			"title": "Lux",
			"width": 1,
			"row": {
				"3": 1
			},
			"col": {
				"3": 3
			},
			"col_width": 1,
			"widgets": [
				{
					"type": "text_widget",
					"settings": {
						"title": "",
						"size": "regular",
						"value": "datasources[\"mqtt\"][\"msg\"][\"lux\"]",
						"sparkline": true,
						"animate": false
					}
				}
			]
		},
		{
			"title": "Buttons",
			"width": 1,
			"row": {
				"3": 1
			},
			"col": {
				"3": 2
			},
			"col_width": 1,
			"widgets": [
				{
					"type": "indicator",
					"settings": {
						"title": "Left",
						"value": "datasources[\"mqtt\"][\"msg\"][\"left\"]"
					}
				},
				{
					"type": "indicator",
					"settings": {
						"title": "Right",
						"value": "datasources[\"mqtt\"][\"msg\"][\"right\"]"
					}
				},
				{
					"type": "indicator",
					"settings": {
						"title": "Reed",
						"value": "datasources[\"mqtt\"][\"msg\"][\"reed\"]"
					}
				}
			]
		},
		{
			"title": "Weather",
			"width": 1,
			"row": {
				"3": 1
			},
			"col": {
				"3": 1
			},
			"col_width": 1,
			"widgets": [
				{
					"type": "gauge",
					"settings": {
						"title": "Humidity",
						"value": "datasources[\"mqtt\"][\"msg\"][\"humidity\"]",
						"units": "%",
						"min_value": 0,
						"max_value": 100
					}
				},
				{
					"type": "gauge",
					"settings": {
						"title": "Pressure",
						"value": "datasources[\"mqtt\"][\"msg\"][\"millibars\"]",
						"units": "millibar",
						"min_value": "100",
						"max_value": "1200"
					}
				}
			]
		},
		{
			"title": "Temperature",
			"width": 1,
			"row": {
				"3": 7
			},
			"col": {
				"3": 3
			},
			"col_width": 1,
			"widgets": [
				{
					"type": "gauge",
					"settings": {
						"title": "Ambient",
						"value": "datasources[\"mqtt\"][\"msg\"][\"ambtemp\"]",
						"units": "°C",
						"min_value": "-10",
						"max_value": "35"
					}
				},
				{
					"type": "gauge",
					"settings": {
						"title": "Object (IR)",
						"value": "datasources[\"mqtt\"][\"msg\"][\"objtemp\"]",
						"units": "°C",
						"min_value": "-10",
						"max_value": "35"
					}
				}
			]
		},
		{
			"width": 1,
			"row": {
				"3": 9
			},
			"col": {
				"3": 2
			},
			"col_width": 1,
			"widgets": [
				{
					"type": "picture",
					"settings": {
						"src": "http://www.ti.com/ww/en/wireless_connectivity/sensortag2015/images/sensorTag-main-visual.png",
						"refresh": 0
					}
				}
			]
		},
		{
			"width": 1,
			"row": {
				"3": 15
			},
			"col": {
				"3": 1
			},
			"col_width": 1,
			"widgets": [
				{
					"type": "text_widget",
					"settings": {
						"title": "ID (MacAddr)",
						"size": "regular",
						"value": "datasources[\"mqtt\"][\"msg\"][\"_id\"]",
						"animate": true
					}
				},
				{
					"type": "text_widget",
					"settings": {
						"title": "Firmware",
						"size": "regular",
						"value": "datasources[\"mqttextras\"][\"msg\"]",
						"animate": true
					}
				}
			]
		}
	],
	"datasources": [
		{
			"name": "mqtt",
			"type": "paho_mqtt",
			"settings": {
				"server": "localhost",
				"port": 9008,
				"use_ssl": false,
				"client_id": "fff888888888",
				"username": "",
				"password": "",
				"topic": "jpmens/cc2650",
				"json_data": true,
				"name": "mqtt"
			}
		},
		{
			"name": "mqttextras",
			"type": "paho_mqtt",
			"settings": {
				"server": "localhost",
				"port": 9008,
				"use_ssl": false,
				"client_id": "",
				"username": "",
				"password": "",
				"topic": "jpmens/cc2650/firmwarerev",
				"json_data": false
			}
		}
	],
	"columns": 3
}

sensortag2mqtt.js

/*
 * sensortag2mqtt by Jan-Piet Mens (C) November 2015
 * read SensorTag CC2650 and publish over MQTT
 * Credits to Tom Igoe for example at https://github.com/tigoe/BluetoothLE-Examples
 *
 * Fedora23:	# dnf install npm nodejs
 * 		# npm install sensortag		// https://github.com/sandeepmistry/node-sensortag
 *		# npm install mqtt		// https://github.com/mqttjs/MQTT.js
 *
 * Launch this program with
 *	$ node sensortag2mqtt.js
 * and click the left button on the SensorTag (the small, round one)
 * Every notification change from the SensorTag will result in an
 * MQTT message being published.
 *
 */

var SensorTag	= require('sensortag');
var mqtt 	= require('mqtt').connect(process.env.BROKERURL || 'mqtt://localhost:1883');
var topic	= 'jpmens/cc2650';

var data = {
	ambtemp:	0,
	lux:		0,
	millibars:	0,
	humidity:	0,
	gyroX:		0,
	gyroY:		0,
	gyroZ:		0,
	reed:		false,
	left:		false,
	right:		false,
};

function fix(num, dec) {
	var s = num.toFixed(dec);

	return parseFloat(s);
}

// listen for tags:
SensorTag.discover(function(tag) {
	tag.on('disconnect', function() {
		console.log('disconnected!');
		process.exit(0);
	});

	function publishData() {
		var payload = JSON.stringify(data);
		console.log(payload);

		mqtt.publish(topic, payload);
	}

	function mod(key, val) {
		if (data[key] != val) {
			console.log(key + " changed to " + val);
			data[key] = val;
			publishData();
		}
	}

	function connectAndSetUpMe() {
		console.log('connectAndSetUp');
		data._id = tag.id;		// xxxxxxxxxxxx
		data._tagtype = tag.type;	// cc2650
		tag.connectAndSetUp(enableSensors);

	}

	function enableSensors() {
		console.log('enableSensors');
		// when sensors are enabled, start notifications
		tag.enableBarometricPressure(n_baro);
		// tag.enableGyroscope(n_gyro);
		tag.enableHumidity(n_humid);
		tag.enableLuxometer(n_lux);
		tag.enableIrTemperature(n_irtemp);
		tag.enableAccelerometer(n_accel);
		// tag.enableMagnetometer(n_magnet);

		tag.notifySimpleKey(function() {
			tag.on('simpleKeyChange', function(left, right, reed) {
				mod('reed', reed);
				mod('left', left);
				mod('right', right);
				if (left && right) {
					// tag.disconnect();
				}
			});
		});

		tag.readFirmwareRevision(function(err, firmwarerev) {
			if (err) {
				console.log(err);
			} else {
				mqtt.publish(topic + "/firmwarerev", firmwarerev);
			}
		});
	}

	function n_baro() {
		tag.notifyBarometricPressure(function() {
			tag.on('barometricPressureChange', function(pressure) {
				mod('millibars', fix(pressure, 0));
			});
		});
	}

	function n_gyro() {
		tag.notifyGyroscope(function() {
			tag.on('gyroscopeChange', function(x,y,z) {
				mod('gyroX', fix(x, 3));
				mod('gyroY', fix(y, 3));
				mod('gyroZ', fix(z, 3));
			});
		});
	}

	function n_humid() {
		tag.notifyHumidity(function() {
			tag.on('humidityChange', function(ambtemp, humidity) {
				mod('ambtemp', fix(ambtemp, 2));
				mod('humidity', fix(humidity, 2));
			});
		});
	}

	function n_lux() {
		tag.notifyLuxometer(function() {
			tag.on('luxometerChange', function(lux) {
				mod('lux', lux);
			});
		});
	}

	function n_irtemp() {
		tag.notifyIrTemperature(function() {
			tag.on('irTemperatureChange', function(objtemp, ambtemp) {
				mod('objtemp', fix(objtemp, 2));
			});
		});
	}

	function n_accel() {
		tag.notifyAccelerometer(function() {
			tag.on('accelerometerChange', function(x, y, z) {
				mod('accX', fix(x, 2));
				mod('accY', fix(y, 2));
				mod('accZ', fix(z, 2));
			});
		});
	}

	function n_magnet() {
		tag.notifyMagnetometer(function() {
			tag.on('magnetometerChange', function(x, y, z) {
				mod('magX', fix(x, 2));
				mod('magY', fix(y, 2));
				mod('magZ', fix(z, 2));
				mod('magAll', [x, y, z]);
			});
		});
	}

	// Now that we've defined all the functions, start the process
	connectAndSetUpMe();
});

Very very useful script for SensorTag. Thanks.
The mqtt message broker I want to connect to requires user and pwd. Where do I put the user and pwd info?
I tried it adding it to line 19 but it doesn't connect successfully.
Thanks.