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Engineer

INDIA
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2

Tools, APP Software Used etc.

	Altium Designer Altium Designer
	arduino IDE Arduino
	Visual Studio Code

Description

Crop Manager

The Crop Manager

The project is developed for monitoring water level of soil, air temperature and humidity of air. It is noted that many soil moisture sensors are cloud based but required some monthly charges and also cost is very high in India.

This device do not require any monthly charges for account because this is based on google firebase project. this firebase access is free of cost.
the web site is also hosted on firebase which is also free and allow hosting the application like web.
user only need to have access for internet in order to upload data to firebase real-time data management system.

Code

Arduino Code

Arduino

#include <DHT.h>
#include <Arduino.h>
#if defined(ESP32)
  #include <WiFi.h>
#elif defined(ESP8266)
  #include <ESP8266WiFi.h>
#endif

#include <NTPClient.h>
#include <WiFiUdp.h>

#include <DNSServer.h>
#include <ESP8266WebServer.h>
#include <WiFiManager.h>         // https://github.com/tzapu/WiFiManager
#include <time.h>
WiFiManager wifiManager;
// Set web server port number to 80
WiFiServer server(80);

// Variable to store the HTTP request
String header;


#include <Firebase_ESP_Client.h>

//Provide the token generation process info.
#include "addons/TokenHelper.h"
//Provide the RTDB payload printing info and other helper functions.
#include "addons/RTDBHelper.h"


// Insert Firebase project API Key
#define API_KEY "your firebase app api"

// Insert Authorized Email and Corresponding Password
#define USER_EMAIL "Your registered Email on firebase"
#define USER_PASSWORD "your Password"

// Insert RTDB URLefine the RTDB URL */
#define DATABASE_URL "Your database URL" 

//Define Firebase Data object
FirebaseData fbdo;
FirebaseAuth auth;
FirebaseConfig config;

//----------------------------------------------------
// Variable to save USER UID
String uid;

// Database main path (to be updated in setup with the user UID)
String databasePath;
// Database child nodes
String tempPath = "/temperature";
String humPath = "/humidity";
String soilPath = "/soil_moisture";
String timePath = "/timestamp";

// Parent Node (to be updated in every loop)
String parentPath;
FirebaseJson json;

// Define NTP Client to get time
WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, "pool.ntp.org");
int timestamp;
//---------------------------------------------------------------
unsigned long sendDataPrevMillis = 0;
int count = 0;
bool signupOK = false;

#define DHTPIN D7   
 
#define DHTTYPE DHT11   // DHT 11
DHT dht(DHTPIN, DHTTYPE);

const int sensor_pin = A0;
 const int dry = 570;//1024-454; // value for dry sensor
 const int wet = 620;//1024-404; // 395 value for wet sensor


// Function that gets current epoch time
unsigned long getTime() {
  timeClient.update();
  unsigned long now = timeClient.getEpochTime();
  return now;
}
 
void setup() {
  Serial.begin(115200);  delay(5000);
   if (WiFi.status() != WL_CONNECTED)
    {


 
   Serial.println("Creating Soft AP");
 wifiManager.autoConnect("Crop Manager");
  // or use this for auto generated name ESP + ChipID
  //wifiManager.autoConnect();
  
  // if you get here you have connected to the WiFi
    }
Serial.println("Connected.");
//---------------------------------------------------------------

 timeClient.begin();
   /* Assign the api key (required) */
  config.api_key = API_KEY;

// Assign the user sign in credentials
  auth.user.email = USER_EMAIL;
  auth.user.password = USER_PASSWORD;


  /* Assign the callback function for the long running token generation task */
  config.token_status_callback = tokenStatusCallback; //see addons/TokenHelper.h
 
  // Assign the maximum retry of token generation
  config.max_token_generation_retry = 5;

   // Initialize the library with the Firebase authen and config
  Firebase.begin(&config, &auth);
   signupOK = true;
//  /* Sign up */
//  if (Firebase.signUp(&config, &auth,USER_EMAIL,USER_PASSWORD)){
//    Serial.println("ok");
//   
//    
//  }
//  else{
//    Serial.printf("%s\n", config.signer.signupError.message.c_str());
//  }

   
 
   uid = auth.token.uid.c_str();
  Serial.print("User UID: ");
  Serial.println(uid);
  
 //--------------------------------------------------------------- 

   // Update database path
  databasePath = "/UsersData/" + uid + "/readings";
  
 }
  float h,t;
  int s=0, wx;
  int sensor_analog=0;
  
void loop(){
  //WiFiClient client = server.available();   // Listen for incoming clients
  // If a new client connects,
  if (Firebase.ready() && signupOK && (millis() - sendDataPrevMillis > 60000 || sendDataPrevMillis == 0)){
    sendDataPrevMillis = millis();
    // Read DHT Sensor

  h  = dht.readHumidity();
  t = dht.readTemperature();  // Reading temperature as Celsius (the default)
 
    
  for (wx=0; wx<20;wx++)
  {
    
     sensor_analog+=analogRead(sensor_pin); delay(10);
    
  }
  sensor_analog=sensor_analog/20;     Serial.print("ADC= "); Serial.println(sensor_analog); 
  sensor_analog=1024-sensor_analog;  
  
  s = (map(sensor_analog, dry, wet,  0, 100));  Serial.print("Mapped Value= "); Serial.println(s);
  s= constrain(s,0,100);
  sensor_analog=0;
  Serial.print("Humidity: ");  
  Serial.print(h);
   
  Serial.print("%  Temperature: ");  
  Serial.print(t);  
  Serial.println("°C ");
 
  Serial.println("Soil Moisture: ");  
  Serial.print(s);  
  Serial.println("%");

   //Get current timestamp
    timestamp = getTime();
    Serial.print ("time: ");
    Serial.println (timestamp);


     parentPath= databasePath + "/" + String(timestamp);

    json.set(tempPath.c_str(), String(t));
    json.set(humPath.c_str(), String(h));
    json.set(soilPath.c_str(), String(s));
    json.set(timePath, String(timestamp));
    Serial.printf("Set json... %s\n", Firebase.RTDB.setJSON(&fbdo, parentPath.c_str(), &json) ? "ok" : fbdo.errorReason().c_str());
  

  }
 
}

Schematic and Layout

WiFi_Soil2.pdf

Download Gerbers Download BOM(Bill of materials)

Jan 12,2024

316 views

Crop Manager

This device monitors soil moisture, temperature and humidity.

316

8.63 (2)

Published: Jan 12,2024

Download Gerber file 1

BOM(Bill of materials)

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