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Simple Key-Operated Gate Locking System

Simple Key-Operated Gate Locking System

6

4

3

7

2

1

5

8

IC4

NE555

+

E

R6

470K

R5

560K

C8

0.01μ

C7

22μ

16V

2

4

3

6

1

5

8

IC5

NE555

D

R8

1K

R7

560K

C9

0.01μ

6

4

3

7

2

1

5

8

IC2

NE555

T

+

B

VR2

560K

R2

560K

C4

0.01μ

C3

22μ

16V

6

4

3

7

2

1

5

8

IC3

NE555

+

C

R4

100K

R3

560K

C5

22μ

16V

6

4

3

7

2

1

5

8

IC1

NE555

THR

DIS

T

R

Vcc

O/P

GND

+

A

VR1

560K

R1

560K

C2

0.01μ

C1

22μ

16V

+

N1

1

2

3

14

N2

6

5

4

7

N3

9

8

10

6

4

3

7

2

1

5

8

IC7

NE555

+

F

M

C

E

B

A

F

D

R9

1K

+5V

C12

470μ

16V

GND

IC6 (N1-N3) = CD4081

R11

2.2K

R13

100K

R12

560K

R14

10K

VR5

1M

C10

470μ

16V

C11

0.01μ

R15

2.7K

CONNECTION OF KEYS

M = MOTOR

RL1-RL2 = 5V, 100Ω, 1C/O RELAY

T1

BC547

D2

SECOND

13.5

SECOND

9.43

SECOND

2.42

17.06

SECOND

ENABLE

DISABLE

R10

2.7K

T2

BC547

RL1

D1

PZ1

N/C

N/O

S1

S2

S3

S4

S5

S6

S7

S8

S9

S10

S11

S12

S13

S14

S15

S16

T3

BC547

N/C

RL1

N/O

L

N

230V AC

50HZ

PZ1 = PIEZO-BUZZER

D1-D2 = 1N4007

C6

0.01μ

Simple Key-Operated Gate Locking System

25
0
2
publish time: 2020-09-28
Circuit Everyday

This simple door lock system only allows people who know the preset value to use the code to open the door. The password should control the motor installed on the door through the keyboard within the preset time. If someone tries to open the door and presses the wrong key on the keyboard, the system will be disabled and an alarm will be issued to warn you of unauthorized access.

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