1. Presented by Jagathees
Infrared Sensor!

2. Contents How it works – 5 steps of infrared How is infrared used?
Why is infrared used?
How is infrared used in the industry/IRL?

3. How it works(in steps) – step 1- parts
LED
Photo Transistor
2n2222 Transistor
4.7k resistor
1000k resistor

4. Step 2- LED and 4.7k resistor
First of all, connect the LED and the 4.7k resistor to the other end unused rail of breadboard.

5. Step 3- 2n2222 Transistor and LED
Next, connect the 2n2222 Transistor to the cathode of the LED.

6. Step 4- 1000k resistor and photo transistor
Then, connect the 1000k resistor between the base of the transistor and unused rail of bread board. Finally, connect the collector of the photo transistor with the 1000k resistor and the emitter to the unused rail of breadboard.

7. Step 5- LEDx2
Then connect the positive wire to the power supply and to the other end of the resistor and negative to the emitter within the transistor. Add the wire to the positive rail and another to the transistor. With the LED installed and the LED infrared sensor lights up.

8. How is infrared used?
Its used by infrared radiation that emits a wave on the screen which is being captured. It uses PIR sensors in the area. Through the infrared scanner which is built in the senor.
Its used mainly in raspberry pi’s. The signal can be change through coding in the raspberry pi’s interface.
Its used in different variety’s of shapes.

9. Why is infrared used?
The reason why infrared sensors used is because its simple to use, very small in order for to do its job and its very cheap it purchase. Its also used for capturing infrared radiation that gets recorded on to the file.
Its used because, its really good at reflecting the waves that gets projected back, wherever the other end of the receiver is.

10. How is infrared used in the industry/IRL?
Infrared sensors are used in in front of the houses and in the back of the house too.
They are also used for door alarms with in addition of a magnetic door senor. When that has been triggered the alarm will be set of.