50 lines
1.3 KiB
Arduino
50 lines
1.3 KiB
Arduino
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#include <DHT.h>
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#define DHT_SENSOR_PIN 21 // ESP32 pin GIOP21 connected to DHT11 sensor
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#define DHT_SENSOR_TYPE DHT11
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#define AOUT_PIN 36 // ESP32 pin GIOP36 (ADC0) that connects to AOUT pin of moisture sensor
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DHT dht_sensor(DHT_SENSOR_PIN, DHT_SENSOR_TYPE);
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void setup() {
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Serial.begin(9600);
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dht_sensor.begin(); // initialize the DHT sensor
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}
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void loop() {
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// read humidity
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float humi = dht_sensor.readHumidity();
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// read temperature in Celsius
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float tempC = dht_sensor.readTemperature();
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// read temperature in Fahrenheit
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float tempF = dht_sensor.readTemperature(true);
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// read soil
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int soil = analogRead(AOUT_PIN); // read the analog value from sensor
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// check whether the reading is successful or not
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if ( isnan(tempC) || isnan(tempF) || isnan(humi)) {
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Serial.println("Failed to read from DHT sensor!");
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} if (isnan(soil)) {
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Serial.println("Failed to read from soil sensor!");
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} else {
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Serial.print("Humidity: ");
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Serial.print(humi);
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Serial.print("%");
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Serial.print(" | ");
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Serial.print("Temperature: ");
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Serial.print(tempC);
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Serial.print(" C ");
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Serial.print(tempF);
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Serial.print(" F");
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Serial.print(" | ");
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Serial.print("Moisture value: ");
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Serial.println(soil);
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}
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// wait a 2 seconds between readings
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delay(2000);
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}
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