Home Automation : Home automation is the automation process of home appliances and other home functions so that we can be controlled with your phone, computer, or even remotely. Which are based on various microcontrollers, arduino, raspberry pi, etc.

1. Presentation On Embedded system
Topic : Home Automation
Group Name: Bug Free
Group members:
1.Nahian Ahmed
2.Monsur Ahmed
9/5/2019 1

2. Home Automation :
Home automation is the automation process of
home appliances and other home functions so
that we can be controlled with your phone,
computer, or even remotely.
Which are based on various microcontrollers,
arduino, raspberry pi, etc.
Introduction

3. Project Introduction
In Our project we make an automation process
to control a room’s Fan and Light remotely using
phone which has IR blaster.

4. Apparatus
• Arduino uno
• IR receiver
• Infrared Remote Control
• DC motor
• LED Light

5. • Transistor (c1815 gr 331)
• Diode
• Resistor (1k)
• Jumper wires
• Power Bank (10,000 mAh)
Apparatus

6. Project Circuit
IR receiver

7. Project Circuit
IR receiver:

8. Project Circuit
• DC motor:

9. IR transmitter and receiver
• The IR transmitter consists of the LED that
emits the IR(Infra Red) radiation.
• This is received by the photo diode, which acts
as IR receiver at the receiving end.
• A remote control patterns a flash of invisible
light which is turned into an instruction and is
received by the receiver module.

10. Transmitter
The IR signal is modulated during transmission.
Modulation means assigning pattern to the data
to be sent to the receiver.
IR transmitter and receiver

11. Receiver
On the receiver side The modulated signal is
demodulated and the pattern is obtained as
IR transmitter and receiver

12. IR Implementation

13. IR Implementation
• To implementation IR in Arduino we need to
download IRremote Library and include
#include<IRremote.h>
• Setting a pin :
IRrecv irrecv(pin);

14. • Enable the pin:
Void setup{
irrecv.enableIRIn();
}
• Decode the value:
if(irrecv.decode(&results)){
int x = (results.value);
}
IR Implementation

15. DC Motor Implementation
To close the motor’s circuit we use Transistor
as a switch. Transistors have three
pins(base, collector, and emitter). A small
amount of current on the base pin closes a
circuit between the collector and emitter pins.

16. DC Motor Implementation
Pass tiny current to base

17. DC Motor Implementation
Diode:
The most common function of a diode is to
allow an electric current to pass in one direction
while blocking it in the opposite direction.

18. LED Implementation
We use IR remote transmit value to turn
on/off the led
if(x==2064){
digitalWrite(12,HIGH);
}
if(x==528){
digitalWrite(12,LOW);
}

19. • https://www.arduino.cc/en/Tutorial/Transistor
MotorControl
• https://learn.sparkfun.com/tutorials/ir-
communication
References

20. Thank You