Intel Edison IoT Hydroponic Controller

// #EC Sensor 
var ecSensor = new mraa.Aio(1);
var EC_reading = 0;
var ecDoser = new mraa.Gpio(6); 
ecDoser.dir(mraa.DIR_OUT); //set the gpio direction to output
var ecDoserState = 0;
var ecDoserTimer = 0;
var ecDoserActivate = false;
var ecSampleTimer = 0;
var EC_DOSER_INTERVAL = 2; // seconds to run doser
var EC_SAMPLE_INTERVAL = 1;  // minutes to wait before using EC reading to determine to dose
var EC_LIMIT = 1500;        // dose when below this value minus EC_Band until it reaches this level
var EC_BAND = 200;
var EC_MS = 0;    // EC micro/S

function waterEC() //Read Water ED
{
 EC_reading = ecSensor.read();    // read the analog input voltage
 // 0 to 1024 = 0 to 5v
 //  204 micro/S per volt
 EC_MS = (EC_reading * 4.88).toFixed();    //   5000 micro/S / 1024 = 4.88
 if (EC_MS < (EC_LIMIT - EC_BAND)) {         // outside of acceptible range
 if (checkTimer(ecSampleTimer)) {        // time to re-dose
 ecSampleTimer = 0;
 //           console.log('--ecDoserState ' + ecDoserState);
 if (ecDoserState != 1) {     // if doser not ON then turn it ON
 ecDoserActivate = true; 
 ecSampleTimer = setMinutesTimer(EC_SAMPLE_INTERVAL);  // reset time until next sample - dose
 console.log('dose for EC');
 }
 }
//        console.log('lower than ' + (EC_LIMIT - EC_BAND));
 }
//    console.log('ecSampleTimer ' + ecSampleTimer);
//    console.log('EC = ' + EC_MS);

} // waterEC()

function checkECDoser()
{ 
 if (ecDoserState == 0 && ecDoserActivate == true)  // if not already on and needs to be on
 {
 ecDoserTimer = setSecondsTimer(EC_DOSER_INTERVAL); 
 ecDoserState = 1;
 ecDoser.write(ecDoserState); 
 console.log('EC Doser is ' + ecDoserState + ' for ' + EC_DOSER_INTERVAL + ' seconds');
 }
 if (checkTimer(ecDoserTimer)) {          // timer went off
 ecDoserActivate = false;
 ecDoserState = 0;                            // turn doser off 
 ecDoser.write(ecDoserState); 
//        console.log('EC Doser Timer Fired');
 }
//    console.log('ecDoserTimer ' + ecDoserTimer);
} // checkECDoser

// Temperature
var tempSensor = new groveSensor.GroveTemp(3);
var tempBase = 23; // goal temperature
var tempTheshold = 25; // try to cool down
var tempAlarm = 27; // too hot sound alarm
var louverOpened = 160;
var louverClosed = 0;
var tempValue = 0;
function tempControl()
{
 // when temp to high; turn on fans, open louvers
 // if temp above theshold, stay on until lowered to base temp
 // turn on buzzer at alarm temp
 tempValue = tempSensor.value();
//    console.log('temp is=' + tempValue);
 if (tempValue > tempTheshold) {
 fanCoolingState = 1;
 servo.setAngle(louverOpened);
 //       console.log('temp hot');
 } else if (tempValue <= tempBase) {
 fanCoolingState = 0;
 servo.setAngle(louverClosed);
 //       console.log('temp normal');
 }
 fanCooling.write(fanCoolingState);
 
 
 if (tempValue >= tempAlarm) {
 alarmState = alarmState ? 0:1;
 alarm.write(alarmState);
 } else {
 alarm.write(0);
 alarmState = 0;
 }
 //  console.log('alarm is=' + alarmState);

} // tempControl()

var waterSensor = require('jsupm_grovewater');
var waterLevel = new waterSensor.GroveWater(2);
var waterLeverTimer = 0;
var waterLevelValue = 0;

var digitalLightSensor = require("jsupm_tsl2561");
var lightSensor = new digitalLightSensor.TSL2561();
var lightLevel = 0;
var lightLowCnt = 0;
var lightTimeRemaining = 960; // minutes in 16 hours
var lightDay = 1440; // minutes in 24 hour day
var lightsState = 0;

var circulationPump = new mraa.Gpio(4); 
circulationPump.dir(mraa.DIR_OUT); //set the gpio direction to output
var circulationPumpState = 0;
var circulationPumpTimer = 0;
var CIRCULATION_PUMP_TIME_ON = 1;  // pump time on
var CIRCULATION_PUMP_TIME_OFF = 1;  // pump time off
function waterCirculation()
{
 waterLevelValue = waterLevel.isWet();
 if (waterLevelValue == true)
 {
 if (checkTimer(circulationPumpTimer)) {
 if (circulationPumpState == 1) {
 circulationPumpState = 0;
 circulationPumpTimer = setMinutesTimer(CIRCULATION_PUMP_TIME_OFF);
 } else {
 circulationPumpState = 1;
 circulationPumpTimer = setMinutesTimer(CIRCULATION_PUMP_TIME_ON);
 }
 circulationPump.write(circulationPumpState);
 }
 } else {
 console.log('low water');
 circulationPumpTimer = 0;
 circulationPumpState = 0;
 circulationPump.write(circulationPumpState);
 }
//    console.log('pump = ' + circulationPumpState);

} // waterCirculation

//Instantiate Servo module on digital port 5
var servo = new servoModule.Servo(5);
servo.setMinPulseWidth(600);
servo.setMaxPulseWidth(2200);

var fanCooling = new mraa.Gpio(7); 
fanCooling.dir(mraa.DIR_OUT); //set the gpio direction to output
var fanCoolingState = 0;

function tempControl()
{
 // when temp to high; turn on fans, open louvers
 // if temp above theshold, stay on until lowered to base temp
 // turn on buzzer at alarm temp
 tempValue = tempSensor.value();
//    console.log('temp is=' + tempValue);
 if (tempValue > tempTheshold) {
 fanCoolingState = 1;
 servo.setAngle(louverOpened);
 //       console.log('temp hot');
 } else if (tempValue <= tempBase) {
 fanCoolingState = 0;
 servo.setAngle(louverClosed);
 //       console.log('temp normal');
 }
 fanCooling.write(fanCoolingState);
 
 
 if (tempValue >= tempAlarm) {
 alarmState = alarmState ? 0:1;
 alarm.write(alarmState);
 } else {
 alarm.write(0);
 alarmState = 0;
 }
 //  console.log('alarm is=' + alarmState);
} // tempControl()

function growLights() // called every minute
{ 
 lightLevel = lightSensor.getLux();
 if (lightLevel < 100 && lightTimeRemaining > 0) {
 if (lightLowCnt < 2) {lightLowCnt++;} else {lightsState = 1; lightLowCnt = 0;}
 } else {
 lightsState = 0;
 lightLowCnt = 0;
 }
 lights.write(lightsState);
 lightTimeRemaining--; 
 lightDay--;
 if (lightDay < 1) {lightDay = 1440; lightRemaining = 640;} // new day 24 hr day with 16 hours of light
 if (lightLowCnt > 0) console.log('lightLow: ' + lightLowCnt); 
 console.log('LightLevel: ' + lightLevel);
} // end growLights

function lcdDisplay()
{
 var lums = 0;
 myLcd.clear();
 myLcd.setCursor(0,0);
 myLcd.write('Cond: ' + localWeather);
 
 myLcd.setCursor(1,0);
 myLcd.write('EC:' + EC_MS);
 
 myLcd.setCursor(1,8);
 if (lightLevel < 100) {lums = 'L';} else if (lightLevel < 130) {lums = 'M';} else {lums = 'H';}
 myLcd.write('L:' + lums);
 
 myLcd.setCursor(1,12); 
 myLcd.write('T:' + tempSensor.value());
} // lcdDisplay

// Define your sensors for cloud publish
var data = [{
 sensorName : "light",
 sensorType: "light.v1.0"
},{
 sensorName : "temperature",     // air temp
 sensorType: "temperature.v1.0"
}];
//Run Once to Init/Register sensors
data.forEach(function(item) {
 registerNewSensor(item.sensorName, item.sensorType, function () { 
 });
});

function registerNewSensor(name, type, callback){
 var msg = JSON.stringify({
 n: name,
 t: type
 });

 var sentMsg = new Buffer(msg);
 console.log("Registering sensor: " + sentMsg);
 client.send(sentMsg, 0, sentMsg.length, options.port, options.host, callback);
};

function sendObservation(name, value, on){
 var msg = JSON.stringify({
 n: name,
 v: value,
 on: on
 });

 var sentMsg = new Buffer(msg);
 console.log("Sending observation: " + sentMsg);
 client.send(sentMsg, 0, sentMsg.length, options.port, options.host);
 
};

function sendToCloud(){
 sendObservation("light", lightLevel, new Date().getTime());
 sendObservation("temperature", tempValue, new Date().getTime());
} //sendToCloud

var localWeather = 'Waiting';
var url = 'http://api.wunderground.com/api/df5bd75178df2c09/conditions/q/MA/Boston.json';
var weatherTimer = 1;  // wait 1 minute before first call
function getWeather()
{
 request({
 url: url,
 json: false
 }, function (error, response, body) {
 if (!error && response.statusCode === 200) {
 var weatherReport = response.body;
 localWeather = weatherReport.substr(weatherReport.indexOf('"weather":"') + 11,10);
 }
 });
} // getWeather