So yea, the lcd I2C panel does not display anything . I wanted the LCD to display the humidity, temperature and humidity of the soil, but it does not display anything. There may be something in the code or in hardware but I've checked everything and I still do not know what it can be. I can not program too much so this code is made up of 3 different, so it's very likely that it's something in the code.
Sorry for my English
int woda = 8;
int soilPin = A0;//Declare a variable for the soil moisture sensor
int val; //This variable stores the value received from Soil moisture sensor.
int soilPower = 7;//Variable for Soil moisture Power
#include <dht.h>
#include <Wire.h>
#include <LCD.h>
#include <LiquidCrystal_I2C.h>
#define I2C_ADDR 0x27
#define BACKLIGHT_PIN 3
#define En_pin 2
#define Rw_pin 1
#define Rs_pin 0
#define D4_pin 4
#define D5_pin 5
#define D6_pin 6
#define D7_pin 7
LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);
dht DHT; //Declaring the DHT as a dht type to use it later
#define DHT11_PIN 9//Declaring where the DHT signal pin is wired
void setup() {
pinMode(8, OUTPUT); //Set pin 8 as OUTPUT pin, to send signal to relay
pinMode(0, INPUT); //Set pin 0 as input pin, to receive data from Soil moisture sensor.
pinMode(soilPower, OUTPUT);
digitalWrite(soilPower, LOW);
{
Serial.begin(9600);
lcd.begin (16, 2);
lcd.setBacklightPin(BACKLIGHT_PIN, POSITIVE);
lcd.setBacklight(HIGH);
lcd.home ();
}
}
void loop() {
}
//This is a function used to get the soil moisture content
int readSoil()
{
digitalWrite(soilPower, HIGH);//turn D7 "On"
delay(10);//wait 10 milliseconds
val = analogRead(soilPin);//Read the SIG value form sensor
digitalWrite(soilPower, LOW);//turn D7 "Off"
return val;//send current moisture value
{
lcd.clear();
lcd.setCursor(0, 0);
int chk = DHT.read11(DHT11_PIN); //Reading data from the module
lcd.print("Tmp:");
lcd.print(DHT.temperature); //Showing temperature value (before that you can do some math to get the temperature in Farnheit)
lcd.print("C");
lcd.setCursor(6, 0);
lcd.print("Wil:");
lcd.println(DHT.humidity); //Showing humidity percentage
lcd.print("%");
lcd.setCursor(6, 1);
lcd.print("Glb:");
lcd.println(DHT.humidity); //Showing humidity percentage
lcd.print("%");
delay(1000);//refreshing every 0.5s
}
{if (readSoil() > 600) {
Serial.println("wetSoil");
lcd.setCursor(0, 1);
lcd.print("Wilg");
delay(500);
}
else {
lcd.setCursor(0, 1);
lcd.print("Such");
Serial.println("drySoil");
}
Serial.print("Soil Moisture = "); //get soil moisture value from the function below and print it
Serial.println(readSoil());
//This 1 second time frame is used so you can test the sensor and see it change in real-time.
//For in-plant applications, you will want to take readings much less frequently.
delay(1000);//take a reading every second
}
}
