The document presents a project on a password-protected door opening system utilizing a microcontroller for enhanced security and automation. It outlines the project's need, objectives, components (both hardware and software), and provides circuit diagrams and flowcharts. Additionally, it discusses various applications and advantages of the system, concluding with insights gained during the project development.

1. VIGNAN INSTITUTE OF TECHNOLOGY AND MANAGEMENT
“MICRONTROLLER BASED ON PASSWORD PROTECTED DOOR
Submitted by:
OPENING SYSTEM”
KISHAN KUMAR DAKUA Regd N o- 122130104
AKANKHYA MOHANTY Regd No- 1101301065
HEMANTA SAHU Regd No- 1221301025
Under the Esteemed Guidance of:
Prof. V.Srikanth
DEPARTMENT OF ELECTRONICS & TELECOMMUNICATION ENGINEERING

2. CONTENTS
1. Introduction
2. Need of project
3. Objective
4. Components
5. Block diagram
6. Circuit diagram
7. Applications
8. Advantages
9. Conclusion
10.References
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3. INTRODUCTION
Password based door opener
security system provides us ease
with security.
With the help of this system,
we can easily avoid the
incoming of any offenders ,
strangers too.
We can easily access our
garage, home, offices etc. without
the use of any kind of keys or
opening it by ourselves.
Hence,provide“AUTOMATION” &
“SECURITY”.
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4. NEED OF PROJECT
There are great varieties of
digital code locks. Generally
speaking, they can be
classified into scores of type,
such as electronic lock,
fingerprint lock, card lock
biological lock, etc.
This kind of lock can
avoiding the problems
caused by the copying of
keys.
It is because the keys people
carry have become burden most
of the time, but by contrast
people need only to remember a
set of codes for electronics
locks and don’t have to carry
any key, thus freeing themselves
from worries.
Among them the most
practical and the most
popularized one come to
digital code lock.
On the premise that it’s safety is
high, it’s another feature without
key is getting more and more
favour of people.
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5. OBJECTIVE
To help users and
give them favour
to go anywhere.
The
objectives of
our project
are listed as
above:
To avoid any
crimes especially
stealing activities.
To design a
keyless door
entry by using
electronic digital
lock code.
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6. COMPONENTS
Hardware part :
• 8051/8052 Microcontroller
• LCD
• Motor driver
• Motor
• Power Supply
Software part :
• Keil IDE software
• Proteus
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7. BLOCK DIAGRAM
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8. Components used
KEYPAD
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9. CIRCUIT DIAGRAM
U1
U2(VSS) U2(VS)
2
7
1
9
10
15
XTAL1
XTAL2
19
18
RST
PSEN
ALE
9
29
30
EA
31
OUT1
OUT2
OUT3
OUT4
8
VS
GND GND
P0.0/AD0
U2
L293D
39
P0.1/AD1
38
P0.2/AD2
37
P0.3/AD3
36
P0.4/AD4
35
P0.5/AD5
34
P0.6/AD6
33
P0.7/AD7
32
P1.0
1
P1.1
2
P1.2
3
P1.3
4
P1.4
5
P1.5
6
P1.6
7
P1.7
8
P2.0/A8
P2.1/A9
P2.2/A10
P2.3/A11
P2.4/A12
P2.5/A13
P2.6/A14
P2.7/A15
P3.0/RXD
21
22
23
24
25
26
27
28
10
P3.1/TXD
11
P3.2/INT0
12
P3.3/INT1
13
P3.4/T0
14
P3.5/T1
P3.6/WR
P3.7/RD
15
16
17
AT89C51
D7
D6
14
D5
13
D4
12
D3
11
D2
10
D1
9
D0
8
7
E
RW
6
RS
5
4
LCD1
LM016L
VSS
1
VDD
2
VEE
3
R1
10k
C1
1u
C2
33p
C3
33p
X1
CRYSTAL
1
2
3
1 2 3
4 5 6
7 8 9
0 #
A
B
C
D
0.00
IN1
3
6
11
14
IN2
EN1
EN2
IN3
IN4
16
VSS
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10. POWER SUPPLY
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11. Flowchart
start
Initialization of ports
Assign ports for Keypad
9
Assign ports for LCD
and Motor driver
Assign variable “pswd”
to store password
Save the password in a variable
“pswd”
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12. Enter the password using
keypad(k)
IF
pswd
=k
IF
C=4
Door open
C=C+1
WAIT FOR 2min
Y
Y
N
N
STOP
Display on LCD
“password matched”
Y
Display on LCD
“password Wrong”
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13. CAMERA VIEW
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14. APPLICATION
• Home access security.
• Office access security.
• Garage automation access.
• Home automation access.
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15. ADVANTAGES
• Simple installation.
• Provide ease and automation.
• Keyless system, hence no more worry of
losing of keys.
• Since, it is the system having password
facility, provide security as well.
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16. CONCLUSION
When we completed this
project, we had learned
and understand the
process of constructing
the Digital Code Lock which contained
hardware and software
development. We also
know and understand
the microcontroller PIC
and how to implement it
on my project.
Our digital code lock
performed as expected.
We were able to
implement all the
functions specified in our
proposal.
This digital code lock is
therefore particularly
useful in applications
such as hotel room door
locks, residential
housing and even office
buildings.
The biggest hurdle we had
to overcome with this
project was interfacing
the microcontroller with
the hardware
components.
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17. references
TEXT BOOKS:
[1] The “8051 Microcontroller and Embedded Systems” by Muhammad Ali Mazidi
and Janice Gillispe Mazidi, Pearson Education.
[2] ATMEL 89S52 Data sheets
REFERENCES:
[1] http://www.sparkfun.com/datasheets/Components/DS1307.pdf
[2] http://www.engineersgarage.com
[3] http://www.zntu.edu.ua/base/lection/rpf/lib/zh03/8051_tutorial.pdf
[4] http://electricly.com/at89s52-microcontroller
[5] http://www.seeedstudio.com/wiki/Grove_-_RTC#Application_Ideas
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18. THANK YOU
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