Hello all, I am a beginner into this stuff. I am using an Arduino UNO and trying to make a plant watering system. I am not sure why, but the serial monitor is not printing out anything, and nothing is working. When i upload, it says upload is successful and I also tried with other example sketches and it works just fine, so i assume something is wrong with my code or something else. any help is appreciated
This is the code:
#include <dht.h>
#include <LiquidCrystal_I2C.h>
#include <string.h>
dht DHT;
#define DHT11PIN 2
#define AOUT_PIN A0
const int waterState = 3;
const int pumpPin = 4;
const int prPIN = A5;
const int mThreshold = 350;
const int pumpSet = 10;
const int pumpLED = 9;
int buttonValue = 0;
LiquidCrystal_I2C lcd(0x27, 16, 2);
void setup() {
Serial.println("Arduino On");
pinMode(waterState, OUTPUT);
pinMode(pumpPin, OUTPUT);
pinMode(prPIN, INPUT);
pinMode(pumpSet, INPUT_PULLUP);
pinMode(pumpLED,OUTPUT);
Serial.begin(9600);
lcd.init();
delay(1000);
lcd.setCursor(0,0);
lcd.clear();
lcd.backlight();
}
void loop() {
float structData = DHT.read11(DHT11PIN);
float humidity = DHT.humidity;
float temperature = DHT.temperature;
float PRreading = analogRead(prPIN);
int soilMoisture = analogRead(AOUT_PIN);
lcd.clear();
lcdHumidity(humidity);
lcdTemp(temperature);
delay(1000);
checkMoisture(soilMoisture);
lcd.clear();
lcdSM(soilMoisture);
lcdLight(PRreading);
delay(1000);
Serial.println(digitalRead(pumpSet));
Serial.println(buttonValue);
if(digitalRead(pumpSet) == 0){
buttonValue += 1;
}
if(buttonValue % 2 != 0){
digitalWrite(pumpLED, HIGH);
}
else{
digitalWrite(pumpLED, LOW);
}
}
void lcdHumidity(int humidityInput){
lcd.setCursor(0, 1);
lcd.print("Humidity: ");
lcd.print(humidityInput);
lcd.print("%");
Serial.print("Humidity: ");
Serial.print(humidityInput);
Serial.println("%");
}
void lcdTemp(int tempInput){
lcd.setCursor(0, 0);
lcd.print("Temperature: ");
lcd.print(tempInput);
lcd.print((char)223);
lcd.print("C");
Serial.print("Temp: ");
Serial.println(tempInput);
}
void lcdSM(int smInput){
lcd.setCursor(0, 0);
lcd.print("Moisture: ");
lcd.print(smInput);
Serial.print("Moisture: ");
Serial.println(smInput);
}
void lcdLight(int lightInput){
String lightState = "Blinding";
lcd.setCursor(0,1);
lcd.print("Light: ");
if(lightInput >= 400){
lightState = "Luminous";
}
if(lightInput >= 600){
lightState = "Bright";
}
if(lightInput >= 700){
lightState = "Moderate";
}
if(lightInput >= 800){
lightState = "Dim";
}
if(lightInput >= 900){
lightState = "Dark";
}
lcd.print(lightState);
Serial.print("Light: ");
Serial.println(lightInput);
Serial.println(lightState);
}
void checkMoisture(int smInput){
if(smInput > mThreshold && buttonValue % 2 != 0){
digitalWrite(waterState, HIGH);
pumpState("ON");
}
else{
digitalWrite(waterState,LOW);
pumpState("OFF");
}
}
void pumpState(String state){
if(state == "ON"){
digitalWrite(pumpPin,HIGH);
Serial.println("PUMP ON");
}
else{
digitalWrite(pumpPin,LOW);
Serial.println("PUMP OFF");
}
}
As you can see, I also wrote a print statement on the first line on setup(). When i upload and open the serial monitor, nothing appears.
Image of serial monitor after uploading:
Any help is appreciated, Thanks!
