solar_charger/soler_chager.ino

#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <dht11.h>
#define DHT11_PIN 7
#define photos A0
#define LED 3
#define button 2
#define buzzer 6

volatile int buttonState;
volatile int value = 0;
int count;
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup()
{
  Serial.begin(9600);
  Serial.print("setting up!\n");
  pinMode(LED, OUTPUT); //initialize digital pin LED as an output.
  pinMode(button, INPUT);
  pinMode(buzzer, OUTPUT);
  Serial.print("init lcd\n");
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0,0);
  lcd.printstr("Hello, World!");
  lcd.setCursor(0,1);
  lcd.printstr("hello, Roald!");
  Serial.print("done setting up!\n");
}

void loop()// the loop function runs over and over again forever
{
  Serial.print("[");
  Serial.print(count);
  Serial.print("] hey\n");

  int chk;
  chk = DHT.read(DHT11_PIN);
  switch (chk) {
   case DHTLIB_OK:
    break;
   case DHTLIB_ERROR_CHECKSUM:
    break;
   case DHTLIB_ERROR_TIMEOUT:
    break;
   default:
    break;
  }
  {
 Serial.print("humidity:");
 Serial.print(DHT.humidity);
 Serial.print("  temperature:");
 Serial.println)DHT.temperature);
 delay(200);
  }
  value = analogRead(photos);
  Serial.println(value);
  if (value > 300){
    digitalWrite(LED, HIGH);
  }
  else{
    digitalWrite(LED, LOW);
  }
  delay(100);
  
  //blink();

  
  buttonState = digitalRead(button);
  if(buttonState == 0) {
    digitalWrite(LED, HIGH);
    birthdaySong();
  } else {
    digitalWrite(LED, LOW);
  }
  delay(100);
  

  count++;


void birthdaySong() {
  tone(buzzer, 294);
  delay(250);
  tone(buzzer, 440);
  delay(250);
  tone(buzzer, 392);
  delay(250);
  tone(buzzer, 532);
  delay(250);
  tone(buzzer, 494);
  delay(500);
  tone(buzzer, 392);
  delay(250);
  tone(buzzer, 440);
  delay(250);
  tone(buzzer, 392);
  delay(250);
  noTone(buzzer);
  tone(buzzer, 587);
  delay(250);
  tone(buzzer, 532);
  delay(500);
  tone(buzzer, 392);
  delay(250);
  tone(buzzer, 784);
  delay(250);
  tone(buzzer, 659);
  delay(250);
  tone(buzzer, 532);
  delay(250);
  tone(buzzer, 494);
  delay(250);
  tone(buzzer, 440);
  delay(250);
  tone(buzzer, 698);
  delay(375);
  tone(buzzer, 659);
  delay(250);
  tone(buzzer, 532);
  delay(250);
  tone(buzzer, 587);
  delay(250);
  tone(buzzer, 532);
  delay(500);
  noTone(buzzer);
}

void blink()
{
  digitalWrite(LED,HIGH);  //turn the LED on (HIGH is the voltage level
  delay(1000);  //wait for a second
  digitalWrite(LED,LOW);  //turn the LED off by making the voltage LOW
  delay(1000);  //wait for a second
}