| #NODE mcu code
|
| #include <ESP8266WiFi.h>
|
| #include <ThingSpeak.h>
|
| #include <DHT.h>
|
|
|
| const char* ssid = "PU_HACKATHON";
|
| const char* password = "Parul%2025";
|
| unsigned long myChannelNumber = 2800421;
|
| const char* myWriteAPIKey = "NDCWC397CZJLULAB";
|
|
|
| #define DHTPIN 4
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| #define DHTTYPE DHT11
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| DHT dht(DHTPIN, DHTTYPE);
|
|
|
| #define WATER_SENSOR_PIN 5
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| #define N_PIN A0
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| #define SOIL_MOISTURE_PIN A0
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|
|
| WiFiClient client;
|
|
|
| void setup() {
|
| Serial.begin(115200);
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| delay(100);
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| pinMode(N_PIN, INPUT);
|
|
|
| dht.begin();
|
|
|
| Serial.print("Connecting to Wi-Fi");
|
| WiFi.begin(ssid, password);
|
| while (WiFi.status() != WL_CONNECTED) {
|
| delay(1000);
|
| Serial.print(".");
|
| }
|
| Serial.println("\nConnected to Wi-Fi!");
|
|
|
| ThingSpeak.begin(client);
|
| }
|
|
|
| void loop() {
|
| float temperature = dht.readTemperature();
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| float humidity = dht.readHumidity();
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|
|
| int waterLevelRaw = analogRead(WATER_SENSOR_PIN);
|
| float waterLevel = map(waterLevelRaw, 0, 1023, 0, 100);
|
|
|
| int nValue = analogRead(N_PIN);
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| float nVoltage = (nValue / 1023.0) * 3.3 * 10;
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|
|
| int soilMoistureRaw = analogRead(SOIL_MOISTURE_PIN);
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| float soilMoisture = map(soilMoistureRaw, 0, 1023, 100, 0);
|
|
|
| if (isnan(temperature) || isnan(humidity)) {
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| Serial.println("Failed to read from DHT sensor!");
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| return;
|
| }
|
|
|
| Serial.print("Temperature: ");
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| Serial.print(temperature);
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| Serial.print(" °C | Humidity: ");
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| Serial.print(humidity);
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| Serial.println(" %");
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| Serial.print("Water Level: ");
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| Serial.println(waterLevel);
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| Serial.print("NPK Sensor Data: ");
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| Serial.println(nVoltage);
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| Serial.print("Soil Moisture: ");
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| Serial.println(soilMoisture);
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|
|
| ThingSpeak.setField(1, temperature);
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| ThingSpeak.setField(2, humidity);
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| ThingSpeak.setField(3, waterLevel);
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| ThingSpeak.setField(4, nVoltage);
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| ThingSpeak.setField(5, soilMoisture);
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|
|
| int statusCode = ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);
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| if (statusCode == 200) {
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| Serial.println("Data uploaded to ThingSpeak successfully!");
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| } else {
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| Serial.println("Failed to upload data. Error code: " + String(statusCode));
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| }
|
| delay(20000);
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| }
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|
|
|
|
