Whats app guys.. In this tutorial, we are going to make a wireless electronic notice board using arduino and bluetooth. you are going to make it step by step manner. This will help us in passing any message almost immediately without any delay just by sending a SMS which is better and more reliable than the old traditional way of passing the message on notice board. This proposed technology can be used in colleges many public places, malls or big buildings to enhance the security system and also make awareness of the emergency situations and avoid many dangers. Using Bluetooth module display the message onto the display board.
1) Arduino UNO
3) LCD Break up board
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Step 1: Gather the Required Components and Understand the Circuit
You can use either arduino uno, arduino nano, arduino promini for this project
I suggest you to buy the LCD Breakout board to fix the LCD.
power up the Bluetooth carefully
Step 2: Connect the LCD With Breakout Board
Connect the LCD as follows
RS -- D7
EN -- D6
D4 -- D5
D5 -- D4
D6 -- D3
D7 -- D2
adjust the contrast by turning the variable resistor on the breakout board
Step 3: Connect the Bluetooth With the Arduino
Connect the TX of the arduino to the RX of the Bluetooth
Connect the RX of the arduino to the TX of the Bluetooth
Connect VCC on arduino board to the +5v of the bluetooth as well as ground to ground.
Step 4: Download the Code From the Attachment
things to learn from the code:-
In the code, i used LCD code and Serial Reception.
in serial Reception, i planned a text format... if you want to display the given text, we have to send text in such a way " #MESSAGE* " so that i can extract the text between # and *.
Step 5: Switch ON the Hardware
After switched ON the hardware, note the led on the bluetooth blinks good and the LCD displays the title with a scrolling to the Left. if this happens, you are working perfectly
Step 6: Open "Arduino Bluetooth Control " App
Install Arduino Bluetooth Control app from play store.
this is one of the best app for the bluetooth terminal
pair our HC05 bluetooth with the pin 1234 to my mobile
1) scan device
2) select the bluetooth device
3) give no if message come
4) select TERMINAL from the home screen
5) Type the message in the format #MESSAGE*
6) touch the send button..
Now you can see your message in the LCD
Step 7: Display the Message on the LCD
If you want to watch the live demo for this project follow my youtube channel
for queries... comment me..