TAHIR BAIG ELCTRICAL ENGINEERING AIR UNIVERSITY,ISLAMABAD

1. Maze solver robot
Ahmed Iqbal (180463)
Tahir Baig (180433)
Instructor
Anum Zulqarnain
(Electrical Engineering Department)

2. Index
• Introduction
• Components
• Working Principle
• Block Diagram
• Application
• Programming on 8051

3. Introduction
What is a
Robot
A Robot is a
machine capable of
carrying out a complex
series of actions
automatically, especially
one programmable by a
computer.

4. Line Following Robot
What is a
Line
Following
Robot
Line following
Robot is a
machine that can
follow a path.
The path can be
visible like a
black line on a
white surface.

5. Components
What are
we
using?
• 8051 Micro
• IR Sensor
• IC L293D
• Motors

6. IR Sensor
IR sensor circuit consists of mainly IR
transmitter and IR receiver. IR transmitter is
similar to an LED.
Its operating voltage is around 1.4V. So to
protect it, a 150Ω resistor is placed in
series with it and is connected in forward
biased. IR receiver is connected in reverse
bias and a 10KΩ resistor is placed
between VCC and the receiver. Output is
taken between resistor and IR receiver.
Since this is an analog output, we can convert it
to a digital HIGH and LOW with the help of a
simple comparator IC like LM358.

7. What is
theneed to bud
line
following
Robot?

8. Block
Diagram

9. Working Principle
The line following robot is one of the self-operating robots. That
detects and follows a line drawn on the area. The line is indicated by
the black line on a white surface. This system must be sense by the
line. This application is depends upon the sensors. Here we are using
two push buttons for this purpose. The microcontroller is an intelligent
device the whole circuit is controlled by the microcontroller.

10. Applications
• Deliver medications in a
hospital.
• Industrial automated equipment carriers.
• Automated cars.
• Tour guides in museums and other
similar applications.
• Deliver the mail within the office building
Where is
this
used?

11. Programming on 8051

15. Switch1 Switch2 Switch3 Switch4 Switch5 Switch6 Result
0 0 0 0 0 0 Moving
forward
1 0 0 0 0 0 Turning Right
0 0 0 0 0 1 Turning Left
0 0 0 1 1 1 Turning Left
1 1 1 0 0 0 Turning Right
1 0 0 0 0 1 Moving
forward
1 1 1 1 1 1 Stop

16. ThankYou