working on the humidity sensor

soler_chager.ino

@@ -0,0 +1,136 @@
+#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
+}