Arduino Bluetooth (HC-05) Wireless Notice Board using LCD

1#include <LiquidCrystal.h>
2/* 
3 *  Idea By:- Devloper Krishna Agarwal  (DIY Inventor)
4 * Devloper Krishna Agarwal (DIY Inventor)
5 * Desgign By:-  Devloper Krishna Agarwal (DIY Inventor)
6 */
7char str[34],L=2;
8int draft=0,i=0;
9int  Pass=0,p=0;
10 int c,x,d;
11
12LiquidCrystal lcd(11,10,5,4,3,2);
13
14void  setup()
15{
16 Serial.begin(9600);
17    pinMode(7,OUTPUT);
18  lcd.begin(16,  2);
19  
20 
21}
22
23
24void loop() 
25{ 
26  if(draft==1)
27  {
28    check();
29     draft=0;
30    i=0;
31    delay(1000);
32  }
33  
34}
35
36void serialEvent()  
37 {
38      while (Serial.available()) 
39      {
40      char inChar=Serial.read();
41      str[i++]=inChar;
42      delay(10);
43      }
44       for (p=i+1;p<34;p++)
45      {
46        str[i++]=32;
47      }
48    draft=1;
49  Serial.write(str);
50  lcd.setCursor(0, 0);
51 lcd.print(str);
52  if(i>16)
53  {
54    d=16;
55    for (x=0;x<=17;x++)
56    {
57    lcd.setCursor(x,2);
58    lcd.print(str[d]);
59    d++;
60    }
61  }
62 }
63
64void check()
65{
66if(!(strncmp(str,"1",1)))
67  {
68   digitalWrite(7,50); 
69   lcd.clear(); 
70  }
71  else if(!(strncmp(str,"2",1)))
72  {
73   digitalWrite(7,LOW);
74   lcd.clear(); 
75  }
76}
77

#include <LiquidCrystal.h>
/* 
 *  Idea By:- Devloper Krishna Agarwal  (DIY Inventor)
 * Devloper Krishna Agarwal (DIY Inventor)
 * Desgign By:-  Devloper Krishna Agarwal (DIY Inventor)
 */
char str[34],L=2;
int draft=0,i=0;
int  Pass=0,p=0;
 int c,x,d;

LiquidCrystal lcd(11,10,5,4,3,2);

void  setup()
{
 Serial.begin(9600);
    pinMode(7,OUTPUT);
  lcd.begin(16,  2);
  
 
}


void loop() 
{ 
  if(draft==1)
  {
    check();
     draft=0;
    i=0;
    delay(1000);
  }
  
}

void serialEvent()  
 {
      while (Serial.available()) 
      {
      char inChar=Serial.read();
      str[i++]=inChar;
      delay(10);
      }
       for (p=i+1;p<34;p++)
      {
        str[i++]=32;
      }
    draft=1;
  Serial.write(str);
  lcd.setCursor(0, 0);
 lcd.print(str);
  if(i>16)
  {
    d=16;
    for (x=0;x<=17;x++)
    {
    lcd.setCursor(x,2);
    lcd.print(str[d]);
    d++;
    }
  }
 }

void check()
{
if(!(strncmp(str,"1",1)))
  {
   digitalWrite(7,50); 
   lcd.clear(); 
  }
  else if(!(strncmp(str,"2",1)))
  {
   digitalWrite(7,LOW);
   lcd.clear(); 
  }
}

Downloadable files

Circuit Diagram

Connection of HC-05 Hook the GND pin (Negative Pin) of HC-05 to Pin GND of Arduino. Connect Red VCC Pin (Positive Pin) of HC-05to VCC of Arduino. Connect TX pin (Data Transfer Pin) of HC-05to RX pin of Arduino. Connect RX Pin of HC-05 to TX Pin of Arduino. Connection Of LCD Connect the First pin from the left of LCD (GND pin) with GND pin of Arduino. Connect the Second pin from the left of LCD (VCC pin) with VCC pin of Arduino. Connect the Third pin from the left of LCD (V0 pin) with GND pin of Arduino. Connect the Fourth pin from the left of LCD (RS pin) with 11 pin of Arduino. Connect the Fifth pin from the left of LCD (R/W pin) with GND pin of Arduino. Connect the Sixth pin from the left of LCD (E pin) with 10 pin of Arduino. Connect the Eleventh pin from the left of LCD (D4 pin) with 5 pin of Arduino. Connect the Twelveth pin from the left of LCD (D5 pin) with 4 pin of Arduino. Connect the Thirteen pin from the left of LCD (D6 pin) with 3 pin of Arduino. Connect the Fourteenth pin from the left of LCD (D7 pin) with 2 pin of Arduino. Connect the Fifteenth pin from the left of LCD (5V pin) with 1 K Resistor with 2 pin of Arduino. Connect the Last pin from the left of LCD (GND pin) with GND pin of Arduino

Circuit Diagram

Comments

Only logged in users can leave comments

agarwalkrishna3009

0 Followers

•

0 Projects

Intro