How to control your own apparatus using pc printer port
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How to Control Your Own Apparatus using PC Printer Port. Viraj Vishwakantha Jayaweera. Printer Port. 1000 * 0= 0 100 * 1= 100 10 * 6= 60 1 * 4 = 4 = 164. 8 * 1 = 8 4 * 1= 4 2 * 0 = 0 1 * 1= 1 = 13. Decimal & Binary Number Systems. Decimal. Binary. 10. 2.

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How to Control Your Own Apparatus using PC Printer Port

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How to control your own apparatus using pc printer port

How to Control

Your Own Apparatus

using

PC Printer Port

Viraj Vishwakantha Jayaweera


How to control your own apparatus using pc printer port

Printer Port


How to control your own apparatus using pc printer port

1000 * 0= 0

100 * 1= 100

10 * 6= 60

1 * 4 = 4

= 164

8 * 1 = 8

4 * 1= 4

2 * 0 = 0

1 * 1= 1

= 13

Decimal & Binary Number Systems

Decimal

Binary

10

2

1000

100

1

8

4

1

103

102

101

100

23

22

21

20

1 1 0 1 2

1 6 4

We use Ten Symbols

0 1 2 3 4 5 6 7 8 9

We use Two Symbols

0 1 or On Off or Hi Low or 0V 5V


How to control your own apparatus using pc printer port

Auto Feed

Data 0

Data 1

Initialize Printer

Data 2

Error

Data 3

Select Input

Data 4

Data 5

Data 6

Data 7

Strobe

ACK

Busy

Paper Empty

Select

Printer Port Pin Assignment

1 14

Input

Output

Output

Pins 18 – 25 Ground

Input

13 25

8 Data Outputs (378 H)

4 Other Outputs (379 H)

5 Data Inputs (37a H)


How to control your own apparatus using pc printer port

1 14

13 25

Directly Connect LED to Printer Port

VCC

LED

5V

-

+

470 ohm

Printer Port


How to control your own apparatus using pc printer port

1 14

13 25

Directly Connect LED to Printer Port

LED

470 ohm

Printer Port

D0

D1

D2

D7

5 V


How to control your own apparatus using pc printer port

230 V AC

L N

X

D1

R1

1N4007

10kohm

K2

From

Printer Port

Y

R3

RELAY

D400

10kohm

230V AC Motor

R2

R5

100kohm

3.3kohm

Output Signal Amplifier

VCC

12V

R4

3.3kohm

5

IN+

2

A

IN-

4

Comparator

¼ LM339

VA = R5 / (R1 + R5)

VA = 3.3 / 13.3

= 2.9 V


How to control your own apparatus using pc printer port

LM339 Quad Voltage Comparators IC


How to control your own apparatus using pc printer port

1 14

13 25

Simple method of use Signal Input line

Printer Port

Switch


How to control your own apparatus using pc printer port

12V

LDR

100kohm

10kohm

¼ LM339

5

To Printer

Port Input

IN+

2

IN-

4

Comparator

1 M

Preset

100kohm

5.6kohm

Input Detectors

100 k

Preset


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