Cyclops WiFi project

[cyclops]

Starting this thread as I have a cheap way of making the eparrot WiFi enabled for around £10. Small amount of code modification is needed and a bit of software installed.

I will put more details later when on the laptop

[ketel3]

That will be great Cyclops.

Not sure how you tackeled  it at the latest way.

[ShiFu]

I'm replying to this thread so the forum will notify me when new posts are made to your WiFi project.
I find this fascinating.

[cyclops]

You will need a raspberry pi zero w for this project and an eparrot. Any eparrot will do as we can edit the code to connect them together.

Connect the power supply to the raspberry pi to a micro usb cable, I then connect the other usb port to the Arduino which then powers on the Arduino too. (I am looking at designing a case to fit the pi inside and connect with pins instead of a cable).

This gives a serial connection between the 2.

For the code you need to start a serial connection in setup() by adding the code:

Code: [Select]

Serial.begin(115200);
Now we need to send any information we want to the pi through serial. This will be done in the loop section.

[cyclops]

Now we add some string variables to the Arduino code, do this before anything is run so put at the top of the script after any \include parts

Code: [Select]

String bTempString;
String vTempString;
String bABVString;
String vABVString;
String pressureString;
So now we can send the information to the pi.

I use this in loop.

Code: [Select]

// Initialising the strings.
    bTempString=String((float)dallascorrect);
    vTempString=String((float)boilingcorrect);
    bABVString=String((float)ABV_Probe1_float*0.1);
    vABVString=String((float)ABVcorrect);
    pressureString=String((float)Pressure);

//Start serial send
    Serial.print("{");
    Serial.print("\"""BoilerTemp""\"");
    Serial.print(": ");
    Serial.print(bTempString);
    Serial.print(",");
    Serial.print("\"""VaporTemp""\"");
    Serial.print(": ");
    Serial.print(vTempString);
    Serial.print(",");
        Serial.print("\"""BoilerABV""\"");
    Serial.print(": ");
    Serial.print(bABVString);
    Serial.print(",");
        Serial.print("\"""VaporABV""\"");
    Serial.print(": ");
    Serial.print(vABVString);
    Serial.print(",");
        Serial.print("\"""Pressure""\"");
    Serial.print(": ");
    Serial.print(Pressure);
    Serial.print("}");

What I am doing is just passing the variables to the pi in JSON order so we can parse it easier in the pi program. I have made it so

The program we will be using on the pi is Node-Red. It can be found here https://nodered.org/

Install this to the pi through the terminal is easiest.

[ketel3]

Well that is some nice info,some coding and basic know how needed.

But I know you did great projects in the past , so you have a good basic knowledge.
For me this sounds quit complicated,so have to do some more reading.
Node red Yep I have heard about it.