this is a presentation on colour sensor which i prepared for demo class in Chennai public school

1. Narayani Nareshkumar
VIT University- Chennai

2. Overview
 What is a robot?
 What are the essential parts of a robot?
 Different types of robots
 Colour sensor
 Colourwheel
 LDR
 What is a Gate?
 Integrating LDR , Gate and the colour wheel.
 Uses

3. What is a Robot?
 A machine
 Performs any human task
 Operates automatically / by remote control
 May / may not resemble a human
 Follows a routine

4. What are the essential parts of a
robot?
A robot has these essential characteristics:
 Sensing
 Movement
 Energy
 Intelligence

5. Different types of robot
 Industrial robots
 Domestic or household robots
 Medical robots
 Service robots
 Military robots
 Entertainment robots
 Space robots
 Hobby and competition robots

6. Colour sensors
 A circuit to detect 8 colours
 Red , green, blue
 Yellow, magenta, cyan
 Black and white

7. Uses of colour sensor
 Sorting
Washing machine
Dyed clothes
 Blood test
 Farms- different fruits and vegetables
-ripe and raw fruits
- coffee beans/ cocoa beans segregation

8. The Colour Wheel

9. What is an LDR?
 Light dependent resistor
 Resistance inversely proportional to light
 A semiconductor material
 Integrated with a colour filter.
 Red, blue, green

11. What is a logic gate?
 building block of a digital circuit
 Input - 1output
 Not gate- 1-> 0
0-> 1
 AND gate- 00->0
01->0
10->0
11->1

12. What is a logic gate?
 building block of a digital circuit
 OR gate- 00->0
01->1
10->1
11->1

13. Integrating LDR, Logic Gates and
the colour wheel