Automatic Watering System

This is an assignment submitted to Deakin University, School of IT, Unit SIT210 -Embedded Systems Development.

This is my version of a smart watering system. My project is an automated watering/sprinkler system for people who have plants in their garden but don't have enough time to water them. The system shown has a moisture sensor attached but can be modified to read the weather or another data you want to active the valve.

Software:

Particle.io

ThingSpeak

IFTTT

Integromat

Google Sheets

Python 2.7 or higher

Hardware:

Particle argon or boron

Jumper wires male to male

Jumper wires male to female

Raspberry Pi 4 Model B

24v Mos driver module

Kinetic 25 x 20mm Male / Female Threaded Reducing Adaptor

Elbow Male & Female 25mm

poly irrigation micro pope or any sprinkler of your choice

poly director 25mm

13mm x 25m Black Poly Pipe or any of your choice

Hose Connector Set

Solenoid Valve with Flow Control (25mm or smaller)

find the tap you want to use

fit elbow

// This #include statement was automatically added by the Particle IDE.

#include "Particle.h"
#include <JsonParserGeneratorRK.h>
// First, we're going to make some variables.
// This is our "shorthand" that we'll use throughout the program:

int valve = D3; // Instead of writing D3 over and over again, we'll write valve

int sensor1= A1;

int waterState = LOW;             // ledState used to set the LED
unsigned long previousMillis = 0;        // will store last time LED was updated
long OnTime = 60000;           // milliseconds of on-time
long OffTime = 60000; 
unsigned long currentMillis;
int Moisture;
String Current = "12:10";
String setTime = "0";
// Having declared these variables, let's move on to the setup function.
// The setup function is a standard part of any microcontroller program.
// It runs only once when the device boots up or is reset.

void setup() {



  pinMode(valve, OUTPUT);
  pinMode(sensor1, INPUT);


  Particle.subscribe("Water", waterHandler, MY_DEVICES);
  Particle.subscribe("set time", timeHandler, MY_DEVICES);
  Particle.subscribe("Current Time", currentHandler, MY_DEVICES);
  

}



void loop() {
    currentMillis = millis();
      Moisture =  analogRead(sensor1);
      createEventPayload(Moisture);
      
    if(setTime == Current)
  {
     createEventPayload(Moisture);
    waterState = HIGH;  // turn it on
    previousMillis = currentMillis;   // Remember the time
    digitalWrite(valve, waterState);
  }
      
    
    if((waterState == HIGH) && (currentMillis - previousMillis >= OnTime))
  {
      createEventPayload(Moisture);
    waterState = LOW;  // Turn it off
    previousMillis = currentMillis;  // Remember the time
    digitalWrite(valve, waterState);  // Update the actual LED
  }
  else if ((waterState == LOW) && (currentMillis - previousMillis >= OffTime))
  {
      createEventPayload(Moisture);
    waterState = HIGH;  // turn it on
    previousMillis = currentMillis;   // Remember the time
    digitalWrite(valve, waterState);	  // Update the actual LED
  }
}



void createEventPayload(int humid)
{
    JsonWriterStatic<256> jw;
    {
        JsonWriterAutoObject obj(&jw);
        jw.insertKeyValue("Moisture",Moisture);
    }
    Particle.publish("Moisture_Vals", jw.getBuffer(), PRIVATE);

}



void waterHandler(const char *event, const char *data)
{
     Moisture =  analogRead(sensor1);
    String val = String(data);
    if(val== "off")
    {
      createEventPayload(Moisture);
    waterState = LOW;  // Turn it off
    previousMillis = currentMillis;  // Remember the time
    digitalWrite(valve, waterState); 
    }
    
    
    if(val == "on")
    {
     createEventPayload(Moisture);
    waterState = HIGH;  // turn it on
    previousMillis = currentMillis;   // Remember the time
    digitalWrite(valve, waterState);
    }

}



void timeHandler(const char *event, const char *data)
{
   setTime = String(data);

}

void currentHandler(const char *event, const char *data)
{
   Current = String(data);

}

A link to the tutorial i used

https://business-automated.medium.com/sending-rasp...

code:

import datetime
import psutil
import requests

data_to_send = {}

x= datetime.datetime.now()
data_to_send["date"] = x.strftime("%X")


print(data_to_send)

r = requests.post("https://hook.integromat.com/yhyjrgmj768l58uubb2rohgdunpql6jl", json = data_to_send)

print(r.status_code)