Introduction
List of Parts
- Arduino Uno
- Potentiometer
- Bread Board
- Resistor
- BlueTooth (HC05).
- Mobile Phone
- Hook up wires
Software Required
- Arduino IDE
- Android App.
Parts Explanation
- The BlueTooth HC05 is used to communicate the message from Arduino to the mobile phone.
- It is a wireless device to send the message clearly.
Figure1 - HC05
Connection
- In the Bluetooth, the Vcc should be connected to the 5v supply of the Arduino board.
- In the Bluetooth, the Gnd should be connected to the Gnd supply of the Arduino board.
- In the Bluetooth, the Tx should be connected to the Rx of the Arduino board.
- In the Bluetooth, the Rx should be connected to the Tx of the Arduino board.
LCD Display To Arduino Uno
- Fix the LCD in 16 to 2 of the bread board.
- The 16 pin to the Gnd.
- The 15 pin to the Vcc.
- The 14 pin to the Digital pin 12.
- The 13 pin to the Digital pin 11.
- The 12 pin to the Digital pin 05.
- The 11 pin to the Digital pin 04.
- The 01 pin to the Gnd.
- The 02 pin to the Vcc.
- The 03 pin to the potentiometer.
- The 04 pin to the Digital pin 03.
- The 05 pin to the Gnd.
- The 06 pin to the Digital pin 02.
Figure 2 - LCD Display
Potentiometer To LCD Display
- Connect the Arduino board to the LCD display as per the preceding figure.
- The Vin should be connected to the LCD display in 03.
Programming For LCD Coding



Bright MawungwaPosted Nov 12, 2018, 2:37 PM
My lcd is displaying wierd characters ,can you help
Hadshana KamalanathanPosted Jul 21, 2018, 7:17 PM
Nice one...
Munish APosted Oct 17, 2017, 1:52 PM
Nice Article sister, ineed some suuggestion to build a bigger product using IoT Can you spread some light....
RakeshPosted Feb 27, 2017, 1:45 PM
Good article share
Bryian TanPosted Feb 27, 2017, 8:21 AM
Thanks for sharing ... ??
Vishal PrajapatiPosted Feb 27, 2017, 7:36 AM
Worth reading.....
Anu VPosted Feb 26, 2017, 5:58 AM
Thanks for sharing..nice..........
Vignesh ManiPosted Feb 24, 2017, 5:27 PM
Good article Karthiga.