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Furqon44
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#include <Arduino.h>
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#include <WiFi.h>
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#include <Firebase_ESP_Client.h>
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#include <DHT.h>
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#include <time.h>
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#include <RTClib.h>
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#include <Wire.h>
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#include <LiquidCrystal_I2C.h> // LCD library that works with ESP32
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#include <addons/TokenHelper.h>
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#include <addons/RTDBHelper.h>
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// Pin Definitions
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#define SOIL_MOISTURE_PIN 34
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#define LDR_PIN 35
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#define DHT_PIN 4
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#define DHT_TYPE DHT22
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#define RELAY_WATER_PUMP 26
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#define RELAY_FERTILIZER_PUMP 27
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#define RTC_SDA 21
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#define RTC_SCL 22
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// Network & Firebase Configuration
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#define API_KEY "AIzaSyCY_b7OHt64p1z_Ytna1YsFIIJ1jPRc2r4"
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#define DATABASE_URL "tess-2d281-default-rtdb.firebaseio.com"
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#define WIFI_SSID "Redmi"
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#define WIFI_PASSWORD "qwerasdf"
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// System Settings
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#define SENSING_INTERVAL 5000
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#define CHECK_PUMP_INTERVAL 1000
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#define SOIL_THRESHOLD 2.0
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#define LIGHT_THRESHOLD 5.0
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#define TEMP_THRESHOLD 0.5
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#define HUMID_THRESHOLD 1.0
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#define LCD_UPDATE_INTERVAL 1000 // LCD refresh interval
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// Global Objects
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FirebaseData fbdo;
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FirebaseAuth auth;
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FirebaseConfig config;
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DHT dht(DHT_PIN, DHT_TYPE);
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RTC_DS3231 rtc;
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LiquidCrystal_I2C lcd(0x27, 16, 2); // LCD object (address, columns, rows)
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// Global Variables
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float soilMoisture, lightIntensity, temperature, humidity;
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float lastSoilMoisture, lastLightIntensity, lastTemperature, lastHumidity;
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int soilRawValue; // Added variable to store raw ADC value
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String currentTime;
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bool signupOK = false;
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bool initialReading = true;
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// Pump Control Variables
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unsigned long lastSensorTime = 0;
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unsigned long lastPumpCheckTime = 0;
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unsigned long lastLCDUpdateTime = 0; // For LCD updates
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bool waterPumpStatus = false;
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bool fertilizerPumpStatus = false;
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float minSoilMoisture = 60.0;
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float maxSoilMoisture = 80.0;
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// LCD Display Functions
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void setupLCD() {
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lcd.init(); // Initialize LCD
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lcd.backlight(); // Turn on backlight
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// Display welcome message
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lcd.setCursor(0, 0);
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lcd.print("Smart Planting Pot");
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lcd.setCursor(0, 1);
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lcd.print("By: Ahmad Furqon S");
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}
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void updateLCD() {
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// Only show title and creator
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lcd.clear();
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lcd.setCursor(0, 0);
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lcd.print("Smart Planting Pot");
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lcd.setCursor(0, 1);
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lcd.print("By: Ahmad Furqon S");
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}
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// Control Pump Functions
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void controlWaterPump(bool turnOn) {
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if (turnOn) {
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digitalWrite(RELAY_WATER_PUMP, LOW);
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Serial.println("Water Pump: ON (pin=LOW)");
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} else {
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digitalWrite(RELAY_WATER_PUMP, HIGH);
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Serial.println("Water Pump: OFF (pin=HIGH)");
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}
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waterPumpStatus = turnOn;
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}
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void controlFertilizerPump(bool turnOn) {
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if (turnOn) {
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digitalWrite(RELAY_FERTILIZER_PUMP, LOW);
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Serial.println("Fertilizer Pump: ON (pin=LOW)");
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} else {
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digitalWrite(RELAY_FERTILIZER_PUMP, HIGH);
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Serial.println("Fertilizer Pump: OFF (pin=HIGH)");
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}
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fertilizerPumpStatus = turnOn;
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}
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// Sensor Reading Function
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void readSensors() {
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// Save last values
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lastSoilMoisture = soilMoisture;
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lastLightIntensity = lightIntensity;
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lastTemperature = temperature;
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lastHumidity = humidity;
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// Soil moisture - Read raw ADC value first
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soilRawValue = analogRead(SOIL_MOISTURE_PIN);
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soilMoisture = map(soilRawValue, 2700, 2250, 0, 100);
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soilMoisture = constrain(soilMoisture, 0, 100);
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// Display soil sensor values in serial monitor
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Serial.println("===== SOIL MOISTURE SENSOR =====");
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Serial.print("Raw ADC Value: ");
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Serial.println(soilRawValue);
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Serial.print("Soil Moisture: ");
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Serial.print(soilMoisture);
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Serial.println("%");
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Serial.println("================================");
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// Light intensity
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int ldrValue = analogRead(LDR_PIN);
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lightIntensity = map(ldrValue, 4095, 0, 0, 100);
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// Temperature & humidity
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int attempts = 0;
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float h, t;
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do {
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h = dht.readHumidity();
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t = dht.readTemperature();
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if (!isnan(h) && !isnan(t)) {
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humidity = h;
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temperature = t;
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break;
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}
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delay(500);
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attempts++;
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} while (attempts < 3 && (isnan(h) || isnan(t)));
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if (isnan(h) || isnan(t)) {
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Serial.println("DHT reading failed");
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}
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}
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// Time Update Function
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void updateCurrentTime() {
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DateTime now = rtc.now();
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char timeString[25];
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snprintf(timeString, sizeof(timeString),
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"%04d-%02d-%02dT%02d:%02d:%02dZ",
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now.year(), now.month(), now.day(),
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now.hour(), now.minute(), now.second());
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currentTime = String(timeString);
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}
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// Firebase Upload Function
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bool uploadToFirebase() {
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if (!Firebase.ready()) return false;
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updateCurrentTime();
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String path = "/sensors";
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bool success = true;
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success &= Firebase.RTDB.setFloat(&fbdo, path + "/humidity", humidity);
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success &= Firebase.RTDB.setFloat(&fbdo, path + "/light", lightIntensity);
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success &= Firebase.RTDB.setFloat(&fbdo, path + "/soilMoisture", soilMoisture);
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success &= Firebase.RTDB.setFloat(&fbdo, path + "/temperature", temperature);
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success &= Firebase.RTDB.setString(&fbdo, path + "/time", currentTime);
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return success;
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}
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// Pump Settings Reading Function
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void readPumpSettings() {
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if (!Firebase.ready() || !signupOK) return;
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if (Firebase.RTDB.getFloat(&fbdo, "/pump_settings/waterPumpRange")) {
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String rangeStr = fbdo.stringData();
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int delimiterPos = rangeStr.indexOf('-');
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if (delimiterPos != -1) {
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minSoilMoisture = rangeStr.substring(0, delimiterPos).toFloat();
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maxSoilMoisture = rangeStr.substring(delimiterPos + 1).toFloat();
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}
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}
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}
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// Automatic Watering Function - MODIFIED: Removed debug messages
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void checkAutomaticWatering() {
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// Jika kelembapan tanah di bawah batas minimum, nyalakan pompa
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if (soilMoisture <= minSoilMoisture) {
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if (!waterPumpStatus) {
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controlWaterPump(true);
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// Debug message removed
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}
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}
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// Jika kelembapan tanah sudah mencapai batas maksimum, matikan pompa
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else if (soilMoisture >= maxSoilMoisture) {
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if (waterPumpStatus) {
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controlWaterPump(false);
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// Debug message removed
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}
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}
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// Jika kelembapan tanah berada di antara min dan max, pertahankan status pompa
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// (tetap menyiram jika sedang menyiram sampai mencapai batas maksimum)
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}
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// Fertilizer Schedule Check Function
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void checkFertilizerSchedule() {
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if (!Firebase.ready() || !signupOK) return;
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String scheduleDate = "";
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String scheduleTime = "";
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static bool fertilizerPumpScheduled = false;
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if (Firebase.RTDB.getString(&fbdo, "/pump_settings/fertilizerPumpDate")) {
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scheduleDate = fbdo.stringData();
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scheduleDate.trim();
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} else {
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return;
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}
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if (Firebase.RTDB.getString(&fbdo, "/pump_settings/fertilizerPumpTime")) {
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scheduleTime = fbdo.stringData();
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scheduleTime.trim();
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} else {
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return;
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}
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DateTime now = rtc.now();
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char currentDateStr[11];
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snprintf(currentDateStr, sizeof(currentDateStr),
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"%02d-%02d-%04d",
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now.day(), now.month(), now.year());
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char currentTimeStr[6];
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snprintf(currentTimeStr, sizeof(currentTimeStr),
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"%02d:%02d",
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now.hour(), now.minute());
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// Cek apakah waktu sesuai dan belum pernah dijalankan hari ini
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if (scheduleDate == currentDateStr &&
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scheduleTime == currentTimeStr &&
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!fertilizerPumpScheduled) {
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// Nyalakan pompa selama 6 detik
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controlFertilizerPump(true);
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delay(6000); // Tunggu 6 detik
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controlFertilizerPump(false);
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// Tandai bahwa pompa sudah dijalankan untuk hari ini
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fertilizerPumpScheduled = true;
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// Reset flag pada pergantian menit berikutnya
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Firebase.RTDB.setTimestamp(&fbdo, "/lastFertilizerPumpTime");
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}
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// Reset flag jika sudah berganti menit
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if (now.minute() != atoi(scheduleTime.substring(3, 5).c_str())) {
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fertilizerPumpScheduled = false;
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}
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}
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// Pump Status Check Function
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void checkPumpStatus() {
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if (!Firebase.ready() || WiFi.status() != WL_CONNECTED) {
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if (waterPumpStatus || fertilizerPumpStatus) {
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controlWaterPump(false);
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controlFertilizerPump(false);
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}
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return;
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}
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bool success = Firebase.RTDB.getBool(&fbdo, "/pumps/waterPump");
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if (success) {
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bool newWaterPumpStatus = fbdo.boolData();
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if (newWaterPumpStatus != waterPumpStatus) {
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controlWaterPump(newWaterPumpStatus);
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}
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}
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delay(200);
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success = Firebase.RTDB.getBool(&fbdo, "/pumps/fertilizerPump");
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if (success) {
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bool newFertilizerPumpStatus = fbdo.boolData();
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if (newFertilizerPumpStatus != fertilizerPumpStatus) {
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controlFertilizerPump(newFertilizerPumpStatus);
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}
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}
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Firebase.RTDB.setBool(&fbdo, "/pumps/waterPump", waterPumpStatus);
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Firebase.RTDB.setBool(&fbdo, "/pumps/fertilizerPump", fertilizerPumpStatus);
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}
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// Change Detection Function
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bool hasSignificantChange() {
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if (initialReading) {
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initialReading = false;
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return true;
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}
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return (abs(soilMoisture - lastSoilMoisture) >= SOIL_THRESHOLD ||
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abs(lightIntensity - lastLightIntensity) >= LIGHT_THRESHOLD ||
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abs(temperature - lastTemperature) >= TEMP_THRESHOLD ||
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abs(humidity - lastHumidity) >= HUMID_THRESHOLD);
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}
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// WiFi Setup Function
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void setupWiFi() {
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WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
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int timeout = 0;
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while (WiFi.status() != WL_CONNECTED && timeout < 20) {
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delay(500);
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timeout++;
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}
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if (WiFi.status() == WL_CONNECTED) {
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Serial.println("WiFi Connected Successfully");
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Serial.print("IP Address: ");
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Serial.println(WiFi.localIP());
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configTime(7 * 3600, 0, "pool.ntp.org");
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} else {
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Serial.println("WiFi Connection Failed");
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}
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}
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// Firebase Setup Function
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void setupFirebase() {
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if (WiFi.status() != WL_CONNECTED) return;
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config.api_key = API_KEY;
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config.database_url = DATABASE_URL;
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if (Firebase.signUp(&config, &auth, "", "")) {
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signupOK = true;
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Serial.println("Firebase Authentication Successful");
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Firebase.begin(&config, &auth);
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Firebase.reconnectWiFi(true);
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fbdo.setResponseSize(4096);
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Firebase.RTDB.setBool(&fbdo, "/pumps/waterPump", false);
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Firebase.RTDB.setBool(&fbdo, "/pumps/fertilizerPump", false);
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} else {
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Serial.println("Firebase Authentication Failed");
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}
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}
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// RTC Setup Function
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void setupRTC() {
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Wire.begin(RTC_SDA, RTC_SCL);
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if (!rtc.begin()) {
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Serial.println("RTC Not Detected!");
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while (1);
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}
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if (WiFi.status() == WL_CONNECTED) {
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configTime(7 * 3600, 0, "pool.ntp.org");
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struct tm timeinfo;
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if (getLocalTime(&timeinfo)) {
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rtc.adjust(DateTime(timeinfo.tm_year + 1900, timeinfo.tm_mon + 1,
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timeinfo.tm_mday, timeinfo.tm_hour,
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timeinfo.tm_min, timeinfo.tm_sec));
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Serial.println("RTC Synchronized with NTP");
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}
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}
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if (rtc.lostPower()) {
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Serial.println("RTC Lost Power, Resetting Time!");
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if (WiFi.status() == WL_CONNECTED) {
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configTime(7 * 3600, 0, "pool.ntp.org");
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struct tm timeinfo;
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if (getLocalTime(&timeinfo)) {
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rtc.adjust(DateTime(timeinfo.tm_year + 1900, timeinfo.tm_mon + 1,
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timeinfo.tm_mday, timeinfo.tm_hour,
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timeinfo.tm_min, timeinfo.tm_sec));
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}
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} else {
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// Fixed: Use correct predefined macros __DATE__ and __TIME__
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rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
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}
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}
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}
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// Setup Function
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void setup() {
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Serial.begin(115200);
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delay(1000);
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Serial.println("\nESP32 Garden Monitoring System Initializing...");
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// Pin Modes
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pinMode(SOIL_MOISTURE_PIN, INPUT);
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pinMode(LDR_PIN, INPUT);
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pinMode(DHT_PIN, INPUT);
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// Relay Initialization
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pinMode(RELAY_WATER_PUMP, OUTPUT);
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pinMode(RELAY_FERTILIZER_PUMP, OUTPUT);
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digitalWrite(RELAY_WATER_PUMP, HIGH);
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digitalWrite(RELAY_FERTILIZER_PUMP, HIGH);
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dht.begin();
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setupWiFi();
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setupRTC(); // Initialize RTC and I2C before LCD
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setupLCD(); // Initialize LCD
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setupFirebase();
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// Relay Test
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Serial.println("Performing Pump Relay Test...");
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controlWaterPump(false);
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controlFertilizerPump(false);
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delay(1000);
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// Show system ready on LCD
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lcd.clear();
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lcd.setCursor(0, 0);
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lcd.print("Smart Planting Pot");
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lcd.setCursor(0, 1);
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lcd.print("By: Ahmad Furqon S");
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Serial.println("System Ready - Manual Pump Control via Firebase");
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}
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// Main Loop Function
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void loop() {
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unsigned long currentMillis = millis();
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// Sensor Reading and Firebase Upload
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if (currentMillis - lastSensorTime >= SENSING_INTERVAL) {
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lastSensorTime = currentMillis;
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readSensors();
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updateCurrentTime();
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if (hasSignificantChange() && WiFi.status() == WL_CONNECTED && signupOK) {
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uploadToFirebase();
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}
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readPumpSettings();
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checkAutomaticWatering();
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}
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// Pump Status Check
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if (currentMillis - lastPumpCheckTime >= CHECK_PUMP_INTERVAL) {
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lastPumpCheckTime = currentMillis;
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if (WiFi.status() == WL_CONNECTED && signupOK) {
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checkPumpStatus();
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checkFertilizerSchedule();
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}
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}
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// Update LCD Display
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if (currentMillis - lastLCDUpdateTime >= LCD_UPDATE_INTERVAL) { // Update every second
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lastLCDUpdateTime = currentMillis;
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updateLCD();
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}
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}
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