Bluetooth Timer

In this project when given input from Bluetooth, We start the Bluetooth Timer.

Author: Shelltroecnec

Project_10_Bluetooth_Timer/Project_10_Bluetooth_Timer.ino

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+//*LCD INITIALIZATION*//
+#include <LiquidCrystal.h>
+const int rs=47,rw=46, en=45, d0=44, d1=43, d2=42, d3=41, d4 = 40, d5 = 39, d6 = 38, d7 = 37;
+LiquidCrystal lcd(rs, rw,en,d0,d1,d2,d3, d4, d5, d6, d7);
+
+int count;
+int count1;
+int count2;
+int buzzer=31;
+int LED1=22;
+int LED2=23;
+int LED3=24;
+
+char c;
+
+void setup(){
+lcd.begin(16,2); //SELECTING LCD COLUMNS & ROWS
+ Serial.begin(9600); //INITALIZING SERIAL COMMUNICATION
+ Serial2.begin(9600); //INITALIZING BLUETOOTH SERIAL COMMUNICATION
+  pinMode(LED1,OUTPUT); //DIFINING LED1 AS OUTPUT DEVICE
+  pinMode(LED2,OUTPUT); //DIFINING LED21 AS OUTPUT DEVICE
+  pinMode(LED3,OUTPUT); //DIFINING LED21 AS OUTPUT DEVICE
+  pinMode(buzzer,OUTPUT); //DIFINING BUZZER AS OUTPUT DEVICE
+  digitalWrite(LED1,HIGH); //INITIALIZING LED1 OFF
+  digitalWrite(LED2,HIGH); //INITIALIZING LED2 OFF
+  digitalWrite(LED3,HIGH); //INITIALIZING LED2 OFF
+  lcd.write("PLZ SET TIMER");
+  lcd.setCursor(0,1);
+  lcd.write("USING BLUETOOTH");
+  }
+void loop(){
+  lcd.noDisplay();
+  delay(500);
+  lcd.display();
+here: lcd.clear(); 
+lcd.write("! SET TIMER !");
+  lcd.setCursor(0,1);
+  lcd.write("USING BLUETOOTH");
+  delay(500);
+  if (Serial2.available()){  //IF BLUETOOTH IS CONNECTED  
+  c=Serial2.read();    //SERIALLY READ FROM BLUETOOTH IS 'c'
+  }
+  if(c=='1')
+  {
+  for(count=10;count>=0;count--){
+    digitalWrite(LED1,LOW);
+    lcd.clear();
+    lcd.print(count);
+    lcd.setCursor(0,1);
+    lcd.print("! START STRECH !");
+    delay(1000);
+    }
+    digitalWrite(LED1,HIGH);
+    lcd.clear();
+    lcd.print("!! STOP !!");
+    digitalWrite(buzzer,HIGH);
+    delay(500);
+    digitalWrite(buzzer,LOW);
+    goto here; 
+    }
+    if(c=='2'){
+    for(count1=20;count1>=0;count1--)
+    {
+      digitalWrite(LED2,LOW);
+      lcd.clear();
+      lcd.print(count1);
+      lcd.setCursor(0,1);
+      lcd.print("! JUMPING JACK !");
+      delay(1000);
+    }
+    digitalWrite(LED2,HIGH);
+    lcd.clear();
+    lcd.print("!! STOP !!");
+    digitalWrite(buzzer,HIGH);
+    delay(500);
+    digitalWrite(buzzer,LOW);
+    goto here; 
+    }
+    if(c=='3'){
+    for(count2=30;count2>=0;count2--)
+    {
+      digitalWrite(LED3,LOW);
+      lcd.clear();
+      lcd.print(count2);
+      lcd.setCursor(0,1);
+      lcd.print("! SQUATS !");
+      delay(1000);
+    }
+    digitalWrite(LED3,HIGH);
+    lcd.clear();
+    lcd.print("!! STOP !!");
+    digitalWrite(buzzer,HIGH);
+    delay(500);
+    digitalWrite(buzzer,LOW);
+    goto here; 
+    }}
+/*else
+  {
+   lcd.clear();
+   lcd.write("WRONG INPUT"); //LCD OUTPUT
+   Serial2.println("WRONG INPUT,PLZ CHECK & REENTER");
+  digitalWrite(LED1,HIGH); //LED1 OFF
+  digitalWrite(LED2,HIGH);   //LED2 OFF
+  digitalWrite(LED3,HIGH);  //LED3 OFF
+  }}*/