Hello! I am making a school project that requires us to share the tinkerCAD link. I have made the actual circuit in real life and the code works properly. When I try to run it on TinkerCAD, the LCD doesn't turn on. I'm new to coding, help would be appreciated! Everything else seems to be working just fine.
#include <EEPROM.h>
#include <LiquidCrystal_I2C.h>
// Initialize the LCD with the pins connected to the Arduino
LiquidCrystal_I2C lcd(0x27, 16, 2);
#define MoistureSensorPin A0 // Analog pin for the soil moisture sensor
// Define button pins
#define bt_set A1
#define bt_up A2
#define bt_down A3
#define motorRelay 9 // Pin for the motor relay
int moistureValue;
float setL_moisture = 30.0; // Default low moisture level
float setH_moisture = 70.0; // Default high moisture level
float moisture = 0;
int Set = 0, flag = 0, flash = 0;
void setup() {
pinMode(MoistureSensorPin, INPUT);
pinMode(bt_set, INPUT_PULLUP);
pinMode(bt_up, INPUT_PULLUP);
pinMode(bt_down, INPUT_PULLUP);
pinMode(motorRelay, OUTPUT);
Serial.begin(9600); // Start serial communication
lcd.setBacklight(HIGH);
lcd.init (); // Initialize the LCD with 16 columns and 2 rows
lcd.clear();
lcd.setCursor(0, 0);
lcd.print(" Welcome To ");
lcd.setCursor(0, 1);
lcd.print("Plant Watering ");
// Initialize EEPROM values
if (EEPROM.read(0) == 255) {
// First-time run, save default values to EEPROM
EEPROM.put(10, setL_moisture);
EEPROM.put(15, setH_moisture);
EEPROM.write(0, 0);
}
// Retrieve stored values from EEPROM
EEPROM.get(10, setL_moisture);
EEPROM.get(15, setH_moisture);
delay(2000); // Wait for 2 seconds
lcd.clear();
}
void loop() {
// Read moisture sensor value and map it to percentage
moistureValue = analogRead(MoistureSensorPin);
moisture = map(moistureValue, 0, 876, 0, 100);
// Serial monitor
Serial.print("Moisture: ");
Serial.print(moisture);
Serial.println("%");
// Control motor relay based on moisture levels
if (moisture > setL_moisture) {
digitalWrite(motorRelay, LOW); // Turn off the motor
} else {
digitalWrite(motorRelay, HIGH); // Turn on the motor
}
// Button handling for setting modes
if (digitalRead(bt_set) == 0) {
if (flag == 0) {
flag = 1;
Set = Set + 1;
if (Set > 2) {
Set = 0;
flash = 0;
}
delay(200); // Debounce delay
}
} else {
flag = 0;
}
// Button handling for increasing set values
if (digitalRead(bt_up) == 0) {
if (Set == 1) {
setL_moisture = setL_moisture + 1;
if (setL_moisture > 100) setL_moisture = 100; // Limit to 100%
EEPROM.put(10, setL_moisture);
}
if (Set == 2) {
setH_moisture = setH_moisture + 1;
if (setH_moisture > 100) setH_moisture = 100; // Limit to 100%
EEPROM.put(15, setH_moisture);
}
delay(10); // Debounce delay
}
// Button handling for decreasing set values
if (digitalRead(bt_down) == 0) {
if (Set == 1) {
setL_moisture = setL_moisture - 1;
if (setL_moisture < 0) setL_moisture = 0; // Limit to 0%
EEPROM.put(10, setL_moisture);
}
if (Set == 2) {
setH_moisture = setH_moisture - 1;
if (setH_moisture < 0) setH_moisture = 0; // Limit to 0%
EEPROM.put(15, setH_moisture);
}
delay(10); // Debounce delay
}
// Display current moisture level and motor status
if (Set == 0) {
lcd.setCursor(0, 0);
lcd.print(" Moisture: ");
lcd.print(moisture, 1);
lcd.print("% ");
lcd.setCursor(0, 1);
lcd.print(" Motor: ");
if (digitalRead(motorRelay) == HIGH) {
lcd.print("ON ");
} else {
lcd.print("OFF");
}
lcd.print(" ");
} else {
// Display setting mode
lcd.setCursor(0, 0);
lcd.print(" Setting Mode ");
lcd.setCursor(0, 1);
lcd.print("L:");
if (Set == 1 && flash == 1) {
lcd.print(" ");
} else {
lcd.print(setL_moisture, 1);
}
lcd.print("% ");
lcd.setCursor(9, 1);
lcd.print("H:");
if (Set == 2 && flash == 1) {
lcd.print(" ");
} else {
lcd.print(setH_moisture, 1);
}
lcd.print("% ");
}
// Flash the display in setting mode
if (Set > 0) {
flash = !flash;
}
delay(1); // Small delay for loop
}
