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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. 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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  1. How to Control Your Own Apparatus using PC Printer Port Viraj Vishwakantha Jayaweera

  2. Printer Port

  3. 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

  4. 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)

  5. 1 14 13 25 Directly Connect LED to Printer Port VCC LED 5V - + 470 ohm Printer Port

  6. 1 14 13 25 Directly Connect LED to Printer Port LED 470 ohm Printer Port D0 D1 D2 D7 5 V

  7. 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

  8. LM339 Quad Voltage Comparators IC

  9. 1 14 13 25 Simple method of use Signal Input line Printer Port Switch

  10. 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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