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@allObjects Thanks for that. I get it :-) I really like the flow of your code example/explaination.

@allobjects.. Ok, i think I get it. How do I access sensorObject to gather the values when using code:

var sensorObject = { "restempvalue" : 0, "phvalue" : 0, "ecvalue" : 0 };

Nevermind... I read over your posts again.. I was just a bit confused, before. Thanks for the informative response.

My goal is to calculate sensor readings and then save them to a JSON object then console.log output a specific value. I'm not sure why I'm not able to access my json value. I keep getting error:

Uncaught Error: Field or method "restempvalue" does not already exist, and can't create it on undefined
 at line 153 col 10
sensorObj.restempvalue = val;
         ^

code:

var sensorReadings = { "restempvalue" : 0, "phvalue" : 0, "ecvalue" : 0 };
var sensorObj = JSON.parse(sensorReadings);

function getAllSensorData() {
  /*restemp.takeReading(function(val) {
    console.log(val);
  });

  ph.takeReading(function(val) {
    console.log(val);
  });*/

  ec.takeReading(function(val) {
    sensorObj.restempvalue = val;
    console.log(val);
  });
}

@Gordon. That did the trick. Thanks

I'm getting undefined for resTempVal and undefined outputs before console.log(resTempVal); So, i'm assuming there's a small delay while taking the sensor reading and the variable resTempVal isn't set. Is there a way to wait until resTempVal gets set before I continue?

code:

Sensor.prototype.takeReading = function() {
  var a = this.sensorAddress;
  var c = this.cmdTable.Reading.R.cmd;
  var w = this.cmdTable.Reading.R.wait;

  var d = "";
  var sensorStatus = "";
  var sensorValue = "";

  var captureSensorData = false;

  I2C1.writeTo(a, c);

  setTimeout(function () {
    d = I2C1.readFrom(a, 9);

    if (d.length > 0) {
      var dContent = d[0];

      switch (dContent) {
        case 1:
          sensorStatus = 1;
          captureSensorData = true;
          break;
        case 255:
          sensorStatus = 255;
          break;
        case 254:
          sensorStatus = 254;
          break;
        case 2:
          sensorStatus = 2;
          break;
      }

      if (captureSensorData === true) {
        for (i = 1; i < d.length; i++) {
          sensorValue += String.fromCharCode(d[i]);
        }
      }

      captureSensorData = false;
      console.log(sensorValue); //<-- I get output
      return sensorValue;
    }
  }, w);
};

var restemp = new Sensor("RES TEMP", "temp", 77);
var ph = new Sensor("PH", "ph", 78);
var ec = new Sensor("EC", "ec", 99);

function getAllSensorData() {
  resTempVal = restemp.takeReading();
  console.log(resTempVal); //<-- undefined
}

setInterval(function () {
  console.log("Taking Reading: ");
  getAllSensorData();
}, 5000);

Oh crap, ya its coming from console.log(a + " " + c); I forgot to comment that out.

I'm trying to receive a value from my temp sensor. Expect I'm receiving "77 r" (without quotes). I should be receiving a number value.

code:

I2C1.setup({scl:B8, sda:B9});

Serial2.setup(9600/*baud*/);

var resTempVal = "";
var phVal = "";
var ecVal = "";

var ready = true;
var alwaysTempCompensate = false;

function Sensor(id, type, address) {
    this.sensorName = id;
    this.sensorType = type;
    this.sensorAddress = address;
    this.sensorRequireTempComp = false;

    this.resTempCal = {
      "clear" : { "cmd" : "Cal,Clear", "wait" : 300  },
      "one"   : { "cmd" : "Cal,n",     "wait" : 1300 },
      "query" : { "cmd" : "Cal,?",     "wait" : 300  }
    };

    this.phCal = {
      "clear" : { "cmd" : "Cal,Clear",      "wait" : 300  },
      "mid"   : { "cmd" : "Cal,mid,7.00",   "wait" : 1300 },
      "low"   : { "cmd" : "Cal,low,4.00",   "wait" : 1300 },
      "high"  : { "cmd" : "Cal,high,10.00", "wait" : 1300 },
      "query" : { "cmd" : "Cal,?",          "wait" : 300  }
    };

    this.ecCal = {
      "clear" : { "cmd" : "Cal,Clear",  "wait" : 300  },
      "dry"   : { "cmd" : "Cal,dry",    "wait" : 2000 },
      "one"   : { "cmd" : "Cal,one,n",  "wait" : 1300 },
      "low"   : { "cmd" : "Cal,low,n",  "wait" : 1300 },
      "high"  : { "cmd" : "Cal,high,n", "wait" : 1300 },
      "query" : { "cmd" : "Cal,?",      "wait" : 300  }
    };

    this.cmdTable = {
      "Calibrate" : {  //List of Calibration commands and timeout value.
      },
      "Information" : {  //Device Information
      },
      "LED" : {  //Enable / Disable or Query the LEDs
        "L0" : { "cmd" : "L,0", "wait" : 300 },
        "L1" : { "cmd" : "L,1", "wait" : 300 },
        "L?" : { "cmd" : "L,?", "wait" : 300 }
      },
      "Reading" : {  //Takes a single reading
        "R" : { "cmd" : "r", "wait" : 1000 } //Takes a single temperature compensated reading
      },
      "Serial"      : {  //Switch back to UART mode
      },
      "Sleep"       : {  //Enter low power sleep mode
      },
      "Status"      : {  //Retrieve status information
      },
      "Temperature" : {  //Set or Query the temperature compensation
        "T"  : { "cmd" : "T", "wait" : 300 },  //Where the temperature is any value; floating point, or int, in ASCII form
        "T?" : { "cmd" : "T,?",   "wait" : 300 }  //Query the set temerature
      },
      "Factory"     : {  //Factory reset
      },
    };

    if (type == "temp") {
      this.cmdTable.Calibrate = this.resTempCal;
      //console.log(this.cmdTable.Calibrate);
    }

    if (type == "ph") {
      this.cmdTable.Calibrate = this.phCal;
      //console.log(this.cmdTable.Calibrate);
      this.sensorRequireTempComp = true;
    }

    if (type == "ec") {
      this.cmdTable.Calibrate = this.ecCal;
      //console.log(this.cmdTable.Calibrate);
      this.sensorRequireTempComp = true;
    }
}

Sensor.prototype.updateTempComp = function (temp) {
  this.cmdTable.Temperature.T.cmd = "T," + temp;
};

Sensor.prototype.takeReading = function() {
  var a = this.sensorAddress;
  var c = this.cmdTable.Reading.R.cmd;
  var w = this.cmdTable.Reading.R.wait;

  var d = "";
  var sensorStatus = "";
  var sensorValue = "";

  var captureSensorData = false;

  console.log(a + " " + c);
  I2C1.writeTo(a, c);

  setTimeout(function () {
    d = I2C1.readFrom(a, 9);

    if (d.length > 0) {
      var dContent = d[0];

      switch (dContent) {
        case 1:
          //console.log("Success");
          sensorStatus = 1;
          captureSensorData = true;
          break;
        case 255:
          sensorStatus = 255;
          break;
        case 254:
          sensorStatus = 254;
          break;
        case 2:
          sensorStatus = 2;
          break;
      }

      if (captureSensorData === true) {
        for (i = 1; i < d.length; i++) {
          //console.log(i + " = " + d[i]);
          sensorValue += String.fromCharCode(d[i]);
        }
        console.log(sensorValue); //<-----Outputs the value correctly
      }
    }

    captureSensorData = false;

    return sensorValue;
    //console.log(sensorValue);
  }, w);
};

var restemp = new Sensor("RES TEMP", "temp", 77);
var ph = new Sensor("PH", "ph", 78);
var ec = new Sensor("EC", "ec", 99);

function getAllSensorData() {
  resTempVal = restemp.takeReading();
  return resTempVal;
}

setInterval(function () {
  console.log("Taking Reading: ");
  getAllSensorData();
}, 5000);

@DrAzzy and @Gordon thanks for answering :-) the shield seems to function as expected. would it make any difference if I placed a logic level converter between the two?

I plan to use the Pico Arduino adapter without the pullups and leave the resistor pads untouched since the shield that I would like to use already has pullups. The manufacturer of the shield specified that the shield ONLY operates at 5volts and could damage whatever it is hooked up. I plan to communicate via i2c...

Does the Pico's i2c bus operate at 5volts or only at 3volts but is 5volt tolerant?

Wow, this is awesome. Takes all the headache out of setting up an environment to compile the source code.

Do you plan on adding a section(s) for those who are custom coding something into the firmware? Or is that what JsCommands are for?

@Gordon I spoke to soon. I switch cables and USB ports and I am still having the same issue. This will also be my second time reinstalling the drivers.

EDIT
Oops I forgot one crucial step: Unzip the file, run the executable, and then go to C:\Program Files (x86)\STMicroelectronics\Software\Virtual comport driver in Windows Explorer and double-click either dpinst_amd64.exe for 64 bit systems, or dpinst_x86.exe for 32 bit.

Everything appears to be functioning properly again :-)

@Gordon Strange, everything seems to be functioning correctly now. My USB cable is most likely not functioning properly.

Driver worked well in Win 7 until I updated to Win 10. I didn't do a clean install of Windows 10, just an upgrade from 7 to 10. Plugged in a fresh Pico and saw the red light flash. I opened up the web IDE tried the normal way to connect and it said Connect failed. I tried a restart but same thing. So I checked Device manager and noticed:

Ahh IC. Duct Tape and zipties, my go to project materials :-)

Good point and I don't think the bartendro pcb will mount to this pump + motor: http://www.ebay.com/itm/24V-DC-Dosing-pump-Peristaltic-dosing-Head-Tube-For-Aquarium-Lab-Analytica-water/221974387648?_trksid=p2054502.c100229.m3211&_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20140505115423%26meid%3D445d49fd5ba94b688f54d7c72e56fa1a%26pid%3D100229%26rk%3D2%26rkt%3D7%26sd%3D321756321027

I'll research more after I finish the project that I'm currently working on. I'm still waiting for the ESPs to arrive from china.

@DrAzzy I was assuming that was the cap visible in the picture on their website.
I can purchase a pump + motor(24v) from ebay for about $8 and change from China. I'm not sure about the quality of the pump and motor though. A really nice quality made pump will cost a bloody fortune.

I was at the hospital the other day and noticed a parasitical pump and wondered if I could use an Espruino to control it. Anyways,I stumbled upon the Bartendro from partyrobotics.com I believe the Bartendro uses the same "brains" as an Arduino and was wondering if replacing the "brains" with an Espruino is worth the hassle and time. Anyways, its not a project that I'm willing to attempt ATM. Its more of a curiosity of how much parts and the pcb will cost if I would to build my own instead of paying the 119$ for an already assembled product. I'm thinking the bulk of the 119$ price tag is due to research and development.

@Gordon You're right, its not a tiny surface mount device

@DrAzzy looks like a D SMD case Aluminum Electrolytic Capacitor; however, I'm not sure if there is another D SMD style case cap that I could confuse with what is required to use.

I uploaded the brd and sch files.

I'm looking for this type of capacitor, but I have no idea what type it is:
Eagle Cad partslist:
C12 100u 6.3V PANASONIC_D SparkFun-Capacitors (445 1620) R0

Quick update. Board status says shipped. I chose the free shipping method so who knows when the boards will arrive.

I will post more pictures and a better description once I assemble a prototype PCB.

With regards to wifi signal range... does the ESP-12E board have a connector for an option to use an external antenna?

Hey @JumJum How's the progress coming along?

I've been working on this project on and off for a few months now. Board has been sent to the dirtypcbs fab house already and I received my parts from digikey. However, I still need to purchase a few ESP12s. anyways.... here is the board pic. Also, board files are attached.

Thanks DrAzzy for the PCB design :-)

Stay tuned for more pictures and a better explanation of my project...

Good find. I could find use for this. "Lights on" or "Computer on" :-)

@stephaneAG very cool and thank you for your contribution :-) My current project is on hold at the moment, but I will definitely look into using that chip in the near future.

Good work! This will definitely come in handy for my project :-)

I would like to implement this on a Pico. Is there anything else I need to impliment along with following the File IO and SD cards example? I would try this out, but I don't have a SD breakout... So I'm only brain storming ATM.

@DrAzzy ya, for vapes. I'll have to do a bit more research on this technology. I know (don't remember the source) that someone created a diy vape using an arduino.