The document discusses various Arduino applications and interfacing a Bluetooth module with Arduino. It explains what Arduino is and describes the Arduino board configuration. It then discusses interfacing a Bluetooth HC-05 module with Arduino to control an LED. Several applications are presented, including a home automation system using Arduino and Bluetooth, a smart door locking system, an automatic streetlight controller, and a traffic light controller. It also discusses using Arduino for sound applications like musical instruments, farming alerts, fire alarms, and basic home applications.

1. Rajiv Gandhi University Of Knowledge
Technology

2. ARDUINO APPLICATIONS
&
INTERFACING BLUETOOTH MODULE WITH ARDUINO
• Presenting By:
• S180050
• S180456
• S180327
• S180795
• S181017

3. What is Arduino?
Arduino is an open-source hardware and software
company, project, and user community that designs and
manufactures single-board microcontrollers and
microcontroller kits for building digital devices.
Arduino is an open-source electronics platform based
on easy-to-use hardware and software. Arduino boards
are able to read inputs - light on a sensor, ...

4. ARDUINO
• Open source platform.
• Atmega micro-controller.
• Wiring software.
• Arduino ide software.

5. GENERAL PIN CONFIGURATION

6. WIRING SOFTWARE INTERFACE

7. ARDUINO IDE INTERFACE

9. Interfacing Bluetooth Module (HC-05) with
Arduino Uno :
Bluetooth is a one of the great example for wireless
connectivity. It is used in many fields. Bluetooth consumes
very small amount of energy. Do you know about
Smartphone controlled robot or car. Commonly one of
these two wireless technology is used in Smartphone
controlled robot. One is WIFI and other is Bluetooth. And
another commonly used wireless technology for controlling
Robot car is RF. Which is the same remote and receiver
used in drones. Here we are going to interface a Bluetooth
Module (HC-05) with Arduino Uno. And describe each line
of code. Then we control the builtin LED of Arduino Uno
from smartphone via Bluetooth.
Before starting we must know about the HC-05

10. Interfacing with Bluetooth Module :
• HC-05 Bluetooth
Module:
• HC-05 is
a Bluetooth
module which is
designed for wireless
communication. This
module can be used in
a master or slave
configuration.

11. Connection with Arduino :
• Connections :
• Arduino Uno HC-05
• Rx - Tx
• Tx - Rx
• 5v - +5v
• GND - GND

12. Connection with Arduino Using code:
• I am going to code the loop part. Use a
while loop and the function
"Serial.available()". This function returns the
number of bytes available to read. The body
part of while loop works only the
"Serial.available()" is greater than 0. Then
read the data available in serial port. For that, I
use the function "Serial.read()". Then store it
to "inputByte". Then use an "if" condition.
Make the pin 13 "HIGH" if the "inputByte" is
"Z" (upper case).Because the the App will
send "z" when the button is in ON mode. This
is for turn on the LED. Next I use a "else if"
condition to turn off the LED. condition for
turn off the LED is "inputByte==z"(lower
case). Because the the App will send "Z"
when the button is in OFF mode. For more
see the String table.
char inputByte='z';
void setup(){
Serial.begin(9600);
pinMode(13,OUTPUT);
}
void loop() {
while(Serial.available()>0){
inputByte= Serial.read();
Serial.println(c);
if (inputByte=='Z'){
digitalWrite(13,HIGH);
}
else if (inputByte=='z'){
digitalWrite(13,LOW);
}
}
}

13. Applications:
• Home automation using Arduino and Bluetooth:
• What is Home automation using Arduino and
Bluetooth?
In the system, we have a mobile app which can be an MIT-app invented app or You can
also download the app from the play store with the name home automation. there are many
apps you can download the app as per your requirement We will also share the link below. So,
The app will be connected to the Bluetooth HC-05 which is part of the control system and
Bluetooth HC-05 receive the data from the android app.
There are many buttons in the app which send some variables when we press those
buttons. Now, the Bluetooth HC-05 receives and sends this data to the Arduino by serial
communication. And Arduino starts to compare this data with the Database and there are many
conditions for the different bulbs. if any condition finds true then the associate bulb starts to
glow. Here the HC-05 works as recipients and Arduino is like Controller. With the Arduino, we
are also using the relay module so that we can interface the electronic appliance with the
Arduino. Bluetooth home automation Content all these points which I have mentioned above I
hope you all get all the points and this will surely help you make the project work.

14. Relay Module :
• A power relay module
is an electrical switch
that is operated by an
electromagnet. The
electromagnet is
activated by a separate
low-power signal from a
micro controller. When
activated, the
electromagnet pulls to
either open or close an
electrical circuit.

15. Home automation using Arduino and Bluetooth Circuit
Diagram :

16. SMART DOOR LOCKING SYSTEM
• Introduction
• Required components
• Door lock 3d design
• Assembling
• code
• Schematic
• setup 3d

17. INTRODUCTION
• simply and easy to manage
• android application is needed
• password type prototype
• feedback responses are obtained

18. REQUIREMENTS
1.Arduino board
2.HC-05 Bluetooth module
3.Servo motor
4.3D Designer

19. DESIGN

20. 3D Design

21. • two commands(open and
close)
• assigning “=”
• “open=” and “close=”

22. SCHEMATIC DIAGRAM

23. ANDROID APP
• Accept terms and
conditions
• start new project
and name the
project
• appinventor.mit.edu

24. • Switch over the
block editors
• make apk file

25. FINAL LAYOUT OF ANDROID APP

26. Automatic Streetlight Controller
Required
• LDR
• LED
• 4.7k Resistor
• Bread Board
• Connecting wires
• Arduino

27. CIRCUIT

28. VIDEO

29. TRAFFIC LIGHT CONTROLLER
Required
• Arduino Mega 2560
• Red LEDs (4 pieces)
• Yellow LEDs (4 pieces)
• Green LEDs (4 pieces)
• 220 ohm resistors (12 pieces)
• Jumper cables
• Breadboards

30. CIRCUIT

31. VIDEO

33. Sound applications
 Musical instruments
 Farming alert system
 Fire alarming system
 Basic home applications

34. MUSICAL INSTRUMENT

35. PIEZO
Sensors are used in a variety of
applications such as microphones,
amplified guitars, and medical imaging
equipment. A piezoelectric microphone
is used in these devices to detect
pressure variations in sound waves,
which can then be converted to an
electrical signal for processing.

36. Music Instrument using ARDUINO

37. Farming alert system

38. Contemporary fire alarm systems use automatic functions to
detect the occurrence of an event that may result in a fire.
They receive a signal from a fire sensor (smoke, heat or carbon
monoxide detector) and automatically transmit it to the fire
alarm panel
Fire alarming system

39. Basic Home Applications

40. #https://create.arduino.cc/projecthub/akshayjoseph666/int
erfacing-bluetooth-module-hc-05-with-arduino-uno-f5209b
#https://create.arduino.cc/projecthub/electropeak/getting-
started-with-hc-05-bluetooth-module-arduino-e0ca81
#https://create.arduino.cc/projecthub/Shubhamkumar97/h
ome-automation-using-arduino-and-bluetooth-control-
404e9c
#https://www.arduino.cc/en/Guide/Introduction
#https://www.instructables.com/Arduino-Musical-
Instrument/
#https://create.arduino.cc/projecthub/techno_z/arduino-
traffic-light-simulator-2ec9f7
References: