srf05_sheet by Kritsada Jaiyen

¡ÒÃãª §Ò¹âÁ´ÙÅÇÑ´ÃÐÂÐ·Ò§ SRF05

SRF05 Ultrasonic Distance Detector Module

âÁ´ÙÅ µÃÇ¨¨ÑºáÅÐÇÑ´ÃÐÂÐ·Ò§´ ÇÂÍÑÅµÃ Òâ«¹Ô¡ Distributed by Innovative Experiment Co.,Ltd., Thailand

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SRF05 à» ¹á¼§Ç§¨ÃÇÑ´µÃÇ¨¨ÑºáÅÐÇÑ´ÃÐÂÐ·Ò§´ ÇÂ¤Å×¹è ÍÑÅµÃ Òâ«¹Ô¡·ÕÁè ¤Õ ÇÒÁà·ÕÂè §µÃ§ÊÙ§ â´ÂÊÒÁÒÃ¶ÇÑ´ÃÐÂÐä´ µ§Ñé áµ 1 à«¹µÔàÁµÃä»¨¹¶Ö§ 4 àÁµÃ SRF04 ¶Ù¡ÍÍ¡áººÁÒãË ãª §Ò¹¡ÑºäÁâ¤Ã ¤Í¹â·ÃÅàÅÍÃ ä´ §Ò Ââ´Âãª ¢Òàª×Íè Áµ Íà¾ÕÂ§ 1 ËÃ×Í 2 ¢Ò ¢Ö¹é ÍÂÙ¡ ºÑ ¡ÒÃ¡íÒË¹´ÃÙ»áºº¡ÒÃ·íÒ§Ò¹·Ò§ ÎÒÃ ´áÇÃ àËÁÒÐÍÂ Ò§ÂÔ§è ¡Ñº¡ÒÃ»ÃÐÂØ¡µ ãª §Ò¹´ Ò¹ËØ¹ Â¹µ SRF05 ¨Ð·íÒ¡ÒÃÊ §ÊÑÒ³¤Å×¹è ÍÑÅµÃ Òâ«¹Ô¡ÍÍ¡ä» áÅ ÇÇÑ´ÃÐÂÐàÇÅÒ·ÕÁè ÊÕ Ñ Ò³ÊÐ· Í¹ µÍº¡ÅÑºÁÒ àÍÒµ ¾µØ ·Õäè ´ ¨Ò¡ SRF05 ¨ÐÍÂÙã ¹ÃÙ»¢Í§¤ÇÒÁ¡Ç Ò§¾ÑÅÊ «§Öè ÊÑÁ¾Ñ¹¸ ¡ºÑ ÃÐÂÐ·Ò§¢Í§ÇÑµ¶Ø ·Õµè ÃÇ¨¨Ñºä´ ¤ÇÒÁ¶ÕÊè Ñ Ò³ÍÑÅµÃ Òâ«¹Ô¡¢Í§ SRF05 ¤×Í 40kHz ¶Ù¡Ê §ÍÍ¡ä»ã¹ÍÒ¡ÒÈ´ ÇÂ¤ÇÒÁ àÃçÇ 1.125 ¿Øµµ ÍÁÔÅÅÔÇ¹Ô Ò·Õ (»ÃÐÁÒ³ 346 àÁµÃµ ÍÇÔ¹Ò·Õ) ´Ñ§¹Ñ¹é àÁ×Íè ·ÃÒº¤ÇÒÁàÃçÇã¹¡ÒÃà¤Å×Íè ¹·Õè ¢Í§¤Å×¹è , àÇÅÒàÃÔÁè µ ¹Ê §¤Å×¹è áÅÐàÇÅÒ·ÕÃè ºÑ àÊÕÂ§ÊÐ· Í¹¡ÅÑºÁÒ ¨Ö§ÊÒÁÒÃ¶¤íÒ¹Ç³ËÒ¤ Ò¢Í§ÃÐÂÐ·Ò§ ä´ ´Ñ§áÊ´§ËÅÑ¡¡ÒÃµÃÇ¨¨Ñºã¹ÃÙ»·Õè 1 ÃÐÂÐ·Ò§·Õäè ´ ¹¹Ñé ¨Ðµ Í§ÁÕ¡ÒÃ¤íÒ¹Ç³¤ Ò¡ÅÑº·Ò§¤³ÔµÈÒÊµÃ àÁ×Íè ãª ¡ºÑ äÁâ¤Ã¤Í¹â·ÃÅàÅÍÃ áÅ Ç¶×ÍÇ Òà» ¹àÃ×Íè §ÂØ§ ÂÒ¡¾ÍÊÁ¤ÇÃ ´Ñ§¹Ñ¹é SRF05 ¨Ö§»ÃÐÁÇÅ¼Å¤ Ò·Ò§¤³ÔµÈÒÊµÃ µÒ § æ àËÅ Ò¹Õäé Ç àÃÕÂºÃ ÍÂáÅ Ç ¨Ò¡¹Ñ¹é Ê §¼ÅÅÑ¾¸ ·ÇÕè ´Ñ ä´ ÍÍ¡ÁÒà» ¹¾ÑÅÊ ·ÁÕè ¤Õ ÇÒÁ¡Ç Ò§ÊÑÁ¾Ñ¹¸ ¡ºÑ ÃÐÂÐ·Ò§·ÕÇè ´Ñ ä´ ¡ÒÃÊ §¼ÅÅÑ¾¸ ·ÕèÇÑ´ä´ ÍÍ¡ÁÒà» ¹ã¹àªÔ§¤ÇÒÁ¡Ç Ò§¢Í§ÊÑÒ³¾ÑÅÊ ÍÒ¨¨Ð´ÙÇ ÒÂØ §ÂÒ¡¡Ç Ò ¡ÒÃÊ §à» ¹¢ ÍÁÙÅ´Ô¨µÔ ÍÅÍÍ¡ÁÒ áµ ¡ÒÃÊ §ÍÍ¡ÁÒà» ¹¢ ÍÁÙÅ´Ô¨µÔ ÍÅÍÒ¨µ Í§ãª ÊÒÂÊÑÒ³¨íÒ¹Ç¹ÁÒ¡ «Ö§è ·íÒãË µÍ §ãª ¢Ò¾ÍÃ µã¹¡ÒÃàª×Íè Áµ Íà» ¹¨íÒ¹Ç¹ÁÒ¡µÒÁä»´ ÇÂ ´Ñ§¹Ñ¹é ËÒ¡Ê §¼ÅÅÑ¾¸ ÍÍ¡ÁÒã¹ÃÙ» ¢Í§ÊÑÒ³¾ÑÅÊ ¨Ðãª ÊÒÂÊÑÒ³à¾ÕÂ§àÊ ¹à´ÕÂÇ ¨Ö§·íÒãË ÊÐ´Ç¡ÁÒ¡ã¹¡ÒÃ¹íÒÁÒàª×Íè Áµ Í¡ÑºäÁâ¤Ã ¤Í¹â·ÃÅàÅÍÃ

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GND

MODE äÁ µ Í : µÔ´µ Íáºº 2 ÊÑÒ³ µ ÍÅ§¡ÃÒÇ´ : µÔ´µ Íáºº 1 ÊÑÒ³

Trigger pulse input Echo pulse output

+5V

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MODE

Trigger pulse input

+5V

54. #

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1. ¨Ø´µ Íãª §Ò¹¢Í§ SRF05

ÁÕ¨´Ø µ ÍÊíÒËÃÑºãª §Ò¹ÍÂÙ· §Ñé ËÁ´ 5 ¨Ø´µÒÁÃÙ»·Õè 2 1. ¢Òä¿àÅÕÂé § (+5V) ÊíÒËÃÑºµ Íä¿àÅÕÂé §áÃ§´Ñ¹ +5V 2. ¢Ò Echo Pulse Output (ECHO) à» ¹¢ÒàÍÒµ ¾µØ ÊíÒËÃÑºÊ §ÊÑÒ³¾ÑÅÊ ÍÍ¡¨Ò¡ SFR05 «Ö§è ¡ÒÃãª §Ò¹¨Ð¹íÒ¢Ò¹Õäé »µ Íà¢ Ò¡Ñº¾ÍÃ µÍÔ¹¾Øµ¢Í§äÁâ¤Ã¤Í¹â·ÃÅàÅÍÃ à¾×Íè µÃÇ¨¨Ñº¤ÇÒÁ ¡Ç Ò§¢Í§ÊÑÒ³¾ÑÅÊ ·ÕèÊ §ÍÍ¡ÁÒà¾×èÍá»Å¤ÇÒÁËÁÒÂÍÍ¡ÁÒà» ¹ÃÐÂÐ·Ò§ÍÕ¡¤ÃÑé§Ë¹Öè§ 3. ¢Ò Trigger Pulse Input (TRIGGER) à» ¹¢ÒÍÔ¹¾ØµÃÑºÊÑÒ³¾ÑÅÊ ·ÁÕè ¤Õ ÇÒÁ¡Ç Ò§ ÍÂ Ò§¹ ÍÂ 10 äÁâ¤ÃÇÔ¹Ò·Õà¾×Íè ¡ÃÐµØ¹ ¡ÒÃÊÃ Ò§¤Å×¹è ÍÑÅµÃ Òâ«¹Ô¡¤ÇÒÁ¶Õè 40kHz ÍÍ¡ÊÙÍ Ò¡ÒÈ¨Ò¡µÑÇ Ê § ´Ñ§¹Ñ¹é àÁ×Íè ¤Å×¹è ¤ÇÒÁ¶Õ´è §Ñ ¡Å ÒÇ¹Õàé ¤Å×Íè ¹·Õäè »¡ÃÐ·ºÊÔ§è ¡Õ´¢ÇÒ§·ÕÍè ÂÙà º×Íé §Ë¹ Ò¡ç¨Ðà¡Ô´¡ÒÃÊÐ· Í¹ ¡ÅÑºà¢ ÒÁÒÂÑ§µÑÇÃÑº áÅÐ¶Ù¡á»Å§ÍÍ¡ÁÒà» ¹¤ÇÒÁ¡Ç Ò§¢Í§ÊÑÒ³¾ÑÅÊ ·¨Õè ÐÊ §ÍÍ¡ä»·Ò§¢Ò Echo Pulse Output ¹Í¡¨Ò¡¹Õãé ¹âËÁ´ 1 ÊÑÒ³ ¨Ðãª ¨´Ø ¹Õàé » ¹¨Ø´Ê×Íè ÊÒÃ¢ ÍÁÙÅÍ¹Ø¡ÃÁà¾×Íè ÃÑºÊ §¤ Ò¡ÒÃ ÇÑ´¡ÑºäÁâ¤Ã¤Í¹â·ÃÅàÅÍÃ 4. ¢Ò MODE ÊíÒËÃÑºàÅ×Í¡ÃÙ»áºº¡ÒÃµÔ´µ Í¡Ñº SRF05 »Å ÍÂÅÍÂäÇ (NC) : àÅ×Í¡ãË µ´Ô µ Íáºº 2 ÊÑÒ³ ¼ Ò¹¨Ø´µ Í ECHO áÅÐ TRIGGER µ ÍÅ§¡ÃÒÇ´ : àÅ×Í¡ãË µ´Ô µ Íáºº 1 ÊÑÒ³ ¼ Ò¹¨Ø´µ Í TRIGGER 5. ¢Ò GND ÊíÒËÃÑºµ Í¡ÃÒÇ´

¡ÒÃãª §Ò¹âÁ´ÙÅÇÑ´ÃÐÂÐ·Ò§ SRF05

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K3 I2C BUS

SRF05 adaptor

GND

¤Í¹à¹ç¡àµÍÃ PULSE (Trigger pulse)

PULSE/SCL ECHO/SDA +5V

SRF-05

¤Í¹à¹ç¡àµÍÃ ECHO

GND SCL SDA +5V

K1 ECHO/SDA

K2 PULSE/SCL

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SRF05

ADX-SRF04

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ECHO

PULSE

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ºÍÃ ´¤Çº¤ØÁ¢Í§ i-nex ÍÒ·Ô Stamp-BOX, RBX-877, RBX-51AC2, AX-11 áÅÐ SCi-BOX

ÃÙ»·Õè 3 áÊ´§Ç§¨Ã¢Í§ºÍÃ ´ ADX-SRF04 áÅÐ¡ÒÃàª×Íè Áµ Í¡ÑºâÁ´ÙÅ SRF05

GND

¡ÒÃãª §Ò¹âÁ´ÙÅÇÑ´ÃÐÂÐ·Ò§ SRF05

2. ºÍÃ ´ ADX-SRF04

à¾×Íè ÍíÒ¹ÇÂ¤ÇÒÁÊÐ´Ç¡á¡ ¼ãÙ ª §Ò¹¡ÑººÍÃ ´¤Çº¤ØÁËØ¹ Â¹µ ¢Í§ºÃÔÉ·Ñ ÍÔ¹â¹àÇµÕ¿ àÍç¡à¾ÍÃÔ àÁ¹µ ¨íÒ¡Ñ´ (i-nex : à» ¹µÑÇá·¹¨íÒË¹ ÒÂÊÔ¹¤ Ò¢Í§ Devantech ã¹»ÃÐà·Èä·ÂÍÂ Ò§à» ¹·Ò§¡ÒÃ) ¨Ö§ä´ ¾Ñ²¹ÒºÍÃ ´ÍÐá´»àµÍÃ Ã¹Ø ADX-SRF04 à¾×Íè ãË ¹Òí âÁ´ÙÅ SRF04 ËÃ×Í SRF05 ÁÒµÔ´µÑ§é (¨Ñ´ÁÒ¾Ã ÍÁ ¡ÑºÊÒÂàª×Íè Áµ Íã¹ªØ´¢Í§ SRF05) à¾×Íè ãË ãª §Ò¹ä´ ÊÐ´Ç¡¢Ö¹é º¹ºÍÃ ´ ADX-SRF04 ä´ ¨´Ñ àµÃÕÂÁ¤Í¹à¹ç¡àµÍÃ PCB 3 ¢ÒµÑÇ¼Ù 2 µÑÇáÂ¡¡Ñ¹ÃÐËÇ Ò§ÊÑÒ³ ECHO áÅÐ TRIGGER ÊíÒËÃÑºàª×Íè Áµ Í¡ÑººÍÃ ´¤Çº¤ØÁËØ¹ Â¹µ áÅÐ¤Í¹à¹ç¡àµÍÃ IDC µÑÇàÁÕÂá¶Ç à´ÕÂè Ç 4 ¢ÒÊíÒËÃÑºàÊÕÂºÊÒÂµ ÍÇ§¨ÃàºÍÃ AWG#22 à¾×Íè µ Í¡Ñºá¼§µ ÍÇ§¨ÃËÃ×ÍàºÃ´ºÍÃ ´ â´ÂÇ§¨Ã ¢Í§ºÍÃ ´ ADX-SRF04 áÅÐ¡ÒÃµÔ´µÑ§é à¾×Íè ãª §Ò¹áÊ´§ã¹ÃÙ»·Õè 3

3. ¡ÒÃãª §Ò¹¡ÑºäÁâ¤Ã¤Í¹â·ÃÅàÅÍÃ 3.1 ¿ §¡ ª¹Ñè â»Ãá¡ÃÁÀÒÉÒ C ÊíÒËÃÑºµÔ´µ ÍÃÐËÇ Ò§ P89V51RD2 ¡ÑºâÁ´ÙÅ SRF05 ã¹âËÁ´¡ÒÃµÔ´µ Íáºº 2 ÊÑÒ³ ã¹¡ÒÃà¢ÕÂ¹â»Ãá¡ÃÁÀÒÉÒ C ÊíÒËÃÑºäÁâ¤Ã¤Í¹â·ÃÅàÅÍÃ P89V51RD2 à¾×Íè ãª §Ò¹âÁ´ÙÅ SRF05 ÊÔ§è ·Õ¤è ÇÃ·íÒ¤×Í ÊÃ Ò§¿ §¡ ª¹Ñè ã¹¡ÒÃµÔ´µ Íà¾×Íè Í Ò¹¤ ÒáÅÐ»ÃÐÁÇÅ¼Å µÑÇÍÂ Ò§·Õ¹è Òí ÁÒàÊ¹Íã¹ º·¹Õ¤é Í× ¿ §¡ ª¹Ñè distance ¿ §¡ ª¹Ñè ¹Õ¹é Òí ÁÒãª ÍÒ ¹¤ ÒÃÐÂÐ·Ò§·ÕÇè ´Ñ ä´ ¨Ò¡âÁ´ÙÅ SRF05 àÃÔÁè µ ¹´ ÇÂ¡ÒÃ¡íÒË¹´ãË ¢Ò¾ÍÃ µ P1.0 ¢Í§äÁâ¤Ã¤Í¹â·ÃÅàÅÍÃ P89V51RD2 µ Í¡Ñº¢Ò ECHO ¢Í§âÁ´ÙÅ SRF05 áÅÐ¡íÒË¹´ãË à» ¹ ¾ÍÃ µÍÔ¹¾Øµ â´Â¡íÒË¹´ãË ÁÅÕ Í¨Ô¡ 1 à¾×Íè àÃÔÁè µ ¹·íÒ§Ò¹ Ê Ç¹¢Ò TRIGGER ¢Í§âÁ´ÙÅ SRF05 µ Íà¢ Ò ¡Ñº¢Ò¾ÍÃ µ P1.1 ´Ñ§¹Ñ¹é ¨Ö§µ Í§¡íÒË¹´ãË à» ¹àÍÒµ ¾µØ à¾×Íè ÊÃ Ò§ÊÑÒ³¾ÑÅÊ ºÇ¡·ÕÁè ¤Õ ÇÒÁ¡Ç Ò§ 5 ¶Ö§ 10 äÁâ¤ÃÇÔ¹Ò·Õ à¾×Íè à» ¹¡ÃÐµØ¹ ãË âÁ´ÙÅ SRF05 àÃÔÁè µ ¹¡ÃÐºÇ¹¡ÒÃÇÑ´ÃÐÂÐ·Ò§ ·Ñ¹·Õ·âÕè Á´ÙÅ SRF05 ä´ ÃºÑ ÊÑÒ³¾ÑÅÊ ºÇ¡à¢ Ò·Õ¢è Ò TRIGGER âÁ´ÙÅ SRF05 ¨Ð´íÒà¹Ô¹ ¡ÒÃÊÃ Ò§¢ºÇ¹¾ÑÅÊ ¤ÇÒÁ¶Õè 40 kHz ÍÍ¡ÊÙÍ Ò¡ÒÈ ¢ºÇ¹¾ÑÅÊ ¤ÇÒÁ¶Õàè Ë¹×ÍàÊÕÂ§ËÃ×ÍÍÑÅµÃ Òâ«¹Ô¡¡ÅØÁ ¹Õé¨Ðà´Ô¹·Ò§à» ¹àÊ ¹µÃ§ ¨¹¡ÃÐ·Ñè§¡ÃÐ·ºÇÑµ¶Ø·Õè¢ÇÒ§ÍÂÙ àº×éÍ§Ë¹ Ò ·íÒãË ¢ºÇ¹¾ÑÅÊ ÍÑÅµÃÒâ«¹Ô¡ ÊÐ· Í¹¡ÅÑºà¢ ÒÁÒÂÑ§µÑÇÃÑº¢Í§âÁ´ÙÅ SRF05 ËÅÑ§¨Ò¡¹Ñé¹Ë¹ ÇÂ»ÃÐÁÇÅ¼ÅÀÒÂã¹âÁ´ÙÅ SRF05 ¨ÐÇÔà¤ÃÒÐË áÅÐãË Ê Ñ Ò³àÍÒµ ¾µØ ÍÍ¡ÁÒà» ¹¤ÇÒÁ¡Ç Ò§¾ÑÅÊ ºÇ¡·Õàè » ¹ÊÑ´Ê Ç¹â´ÂµÃ§¡ÑºÃÐÂÐ·Ò§ ·Õµè ÃÇ¨¨Ñºä´

¡ÒÃãª §Ò¹âÁ´ÙÅÇÑ´ÃÐÂÐ·Ò§ SRF05 ÊÑÒ³¾ÑÅÊ ¡ÃÐµØ¹ ¡Ç Ò§ 10 äÁâ¤ÃÇÔ¹Ò·Õ ÊÑÒ³¡ÃÐµØ¹ ·Õ¢è Ò TRIGGER ÊÑÒ³ÍÑÅµÃ Òâ«¹Ô¡ ¶Ù¡Ê §ÍÍ¡ÁÒ 8 ä«à¡ÔÅ ÊÑÒ³¤Å×¹è ¤ÇÒÁ¶Õàè Ë¹×ÍàÊÕÂ§ (ÍÑÅµÃ Òâ«¹Ô¡) ·ÕÊè § ÍÍ¡¨Ò¡ âÁ´ÙÅ SRF05

Ë¹ Ç§àÇÅÒ 10 ÁÔÅÅÔÇ¹Ô Ò·Õ ¡ Í¹Ê §¾ÑÅÊ Å¡Ù µ Íä»

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ÃÙ»·Õè 4 ä´ÍÐá¡ÃÁàÇÅÒáÊ´§ÊÑÒ³·ÕÊè § ä»ÂÑ§ SRF05 áÅÐÊÑÒ³·Õµè ÍºÃÑº¡ÅÑºÁÒ¨Ò¡ SRF05 ã¹¡Ã³Õµ´Ô µ Íáºº 2 ÊÑÒ³

ÊÑÒ³¾ÑÅÊ ¡ÃÐµØ ¹ ¡Ç Ò§ÍÂ Ò§¹ ÍÂ 10 äÁâ¤ÃÇÔ¹Ò·Õ ¾ÑÅÊ ÊÐ· Í¹ (echo) ·ÕèÊ §ÍÍ¡¨Ò¡âÁ´ÙÅ SRF05 ÁÕ¤ÇÒÁ¡Ç Ò§ 100 äÁâ¤ÃÇÔ¹Ò·Õ¶Ö§ 25 ÁÔÅÅÔÇÔ¹Ò·Õ ËÒ¡¡Ç Ò§¡Ç Ò 30 ÁÔÅÅÔÇ¹Ô Ò·Õ¶Í× Ç Ò µÃÇ¨¨ÑºäÁ ¾ºÇÑµ¶Ø

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ÃÙ»·Õè 5 ä´ÍÐá¡ÃÁàÇÅÒáÊ´§ÊÑÒ³·ÕÊè § ä»ÂÑ§ SRF05 áÅÐÊÑÒ³·Õµè ÍºÃÑº¡ÅÑºÁÒ¨Ò¡ SRF05 ã¹¡Ã³Õµ´Ô µ Íáºº 1 ÊÑÒ³ (¢Ø´µ Í MODE µ Í§µ ÍÅ§¡ÃÒÇ´ )

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ÊíÒËÃÑº¡ÒÃ¹Ñº¤ÇÒÁ¡Ç Ò§¾ÑÅÊ ·¢Õè Ò ECHO ¨Ðãª ä·àÁÍÃ 1 ã¹âËÁ´ 16 ºÔµ à» ¹µÑÇ¹ÑºàÇÅÒ ¤ÇÒÁ¡Ç Ò§¢Í§ÊÑÒ³¾ÑÅÊ â´Â¨ÐàÃÔÁè µ ¹¹Ñº àÁ×Íè ¾ºÇ Ò ÁÕ¡ÒÃà»ÅÕÂè ¹á»Å§ÅÍ¨Ô¡áºº¢Ò¢Ö¹é ¨Ò¡ 0 ä»à» ¹ 1 áÅÐËÂØ´¡ÒÃ¹ÑºàÁ×Íè ¾º¡ÒÃà»ÅÕÂè ¹á»Å§ÅÍ¨Ô¡áºº¢ÒÅ§ ¨Ò¡ 1 ä»à» ¹ 0 ËÅÑ§¨Ò¡¹Ñ¹é ¤ Ò·Õäè ´ ¨Ò¡¡ÒÃ¹Ñº¹íÒä»ËÒÃ´ ÇÂ 114 ¨Ðà» ¹¤ Ò»ÃÐÁÒ³·Õãè ¡Å à¤ÕÂ§¨Ò¡¡ÒÃá»Å§ ¢ ÍÁÙÅÃÐÂÐ·Ò§·Õäè ´ ¨Ò¡âÁ´ÙÅ SRF05 ä·àÁÍÃ ¢Í§äÁâ¤Ã¤Í¹â·ÃÅàÅÍÃ ·ãÕè ª ¹¹Ñé ¨ÐÍ Ò§ÍÔ§ÊÑÒ³ ¹ÒÌ ¡Ò ¤ÇÒÁ¶Õè 11.0592 MHz áÅÐäÁâ¤Ã¤Í¹â·ÃÅàÅÍÃ P89V51RD2 ·íÒ§Ò¹´ ÇÂ¤ÇÒÁàÃçÇ 6 ÊÑÒ³ ¹ÒÌ ¡Òµ Íä«à¡ÔÅ

+5V 31 C2 1/50V

RESET 9 R1 10k

RST

+5V

C1 0.1/50

5 6 4

16 P3.6 17 P3.7

C5 0.1/ 50V

IC1 2&'8# 4, P0.7

R2 10k x8

+5V

2 R/W E

DSP1 LCD 16x2

RS D7 D6 D5 D4 D3 D2 D1 D0 14 13 12 11 10 9 8 7

3 1

33 P0.6 34 P0.5 35 P0.4 36 P0.3 37 P0.2 38 P0.1 39 P0.0

+5V R3 4k7

P1.0 P1.1

1 2

R4 4k7

+5V MOD1 54. " ECHO TRIGGER GND

20 18 C3 33pF

19 C4 33pF

XTAL1 11.0592MHz

ÃÙ»·Õè 6 Ç§¨Ã·´ÅÍ§µÔ´µ ÍäÁâ¤Ã¤Í¹â·ÃÅàÅÍÃ P89V51RD2 ¡Ñº SRF05 âÁ´ÙÅÇÑ´ÃÐÂÐ·Ò§

VR1 10k

¡ÒÃãª §Ò¹âÁ´ÙÅÇÑ´ÃÐÂÐ·Ò§ SRF05

/*————————————————————————————————————————————————————————————————————————*/ // Description : Distance detector by SFR05 display value on LCD // Filename : V51SRF05.C // C compiler : RIDE 51 V6.4.35 /*————————————————————————————————————————————————————————————————————————*/ #include <REGLV51RD2.h> // Header file register for P89V51RD2BN #include <lcdV51.h> // Library for LCD display #include <intrins.h> // Include library for nop function sbit echo = P1^0; // Define received pulse pin(SDA) sbit trigger = P1^1; // Define trigger pulse pin(SCL) /***************** Function Trigger pulse for start process ******************/ void trigger_pulse(void) { unsigned char i; // Variable for counter trigger = 1; // Start positive pulse for(i=0;i<10;i++) // Loop 10 times _nop_(); // Delay 1 microseconnd function trigger = 0; // End of positive pulse } /******************** Distance reading function ****************************/ unsigned int distance() { unsigned int mc; // Variable for internal function trigger = 0; // Initial logic low echo = 1; // Initial logic low TMOD &=0x0F; // Configuration Timer1 mode 2(16-bit counter) TMOD |=0x10; TH1 = 0x00; // Initial Timer1 counter value to zero TL1 = 0x00; TF1 = 0; // Clear overflow flag TR1 = 0; // Start Timer1 trigger_pulse(); // Send trigger pulse while(!echo); // Detect rising pulse TR1 = 1; // Start timer count while(echo); // Detect falling pulse TR1 = 0; // Stop timer TF1 = 0; // Clear overflow flag mc = TH1; // Keep high byte mc <<= 8; // Shift to high byte mc += TL1; // Keep low byte delay(10); // Delay 10 millisecond return(mc/114); // Return distance value in centimetre unit } /************************* Main Program **************************************/ void main() { unsigned int value,old_value; // Variable for storing distance value lcd_init(); // Initial LCD lcd_puts(0x80,”SRF-05 Demo...”); // Display message lcd_puts(0xC0,”Distance: cm”); // Show distance value on screen while(1) // Infinite loop

â»Ãá¡ÃÁ·Õè 1 â»Ãá¡ÃÁÀÒÉÒ C ÊíÒËÃÑº·´ÅÍ§¡ÒÃãª §Ò¹äÁâ¤Ã¤Í¹â·ÃÅàÅÍÃ P89V51RD2 ¡Ñº SRF05 âÁ´ÙÅÇÑ´ÃÐÂÐ·Ò§ (ÁÕµÍ )

¡ÒÃãª §Ò¹âÁ´ÙÅÇÑ´ÃÐÂÐ·Ò§ SRF05

{ value = distance(); if(value != old_value)

// Read distance // Compare new and previous value to update display

{ lcd_puts(0xCA,” “); inttolcd(0xCA,value); delay(500); } old_value = value;

// Clear previous value // Update new value // Delay for displaying

// Keep previous value for comparison next time

} }

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â»Ãá¡ÃÁ·Õè 1 â»Ãá¡ÃÁÀÒÉÒ C ÊíÒËÃÑº·´ÅÍ§¡ÒÃãª §Ò¹äÁâ¤Ã¤Í¹â·ÃÅàÅÍÃ P89V51RD2 ¡Ñº SRF05 âÁ´ÙÅÇÑ´ÃÐÂÐ·Ò§ (¨º) ã¹¡ÒÃ·´ÊÍº¹Õàé » ¹¡ÒÃà¢ÕÂ¹â»Ãá¡ÃÁÀÒÉÒ C ¤Çº¤ØÁäÁâ¤Ã¤Í¹â·ÃÅàÅÍÃ P89V51RD2 à¾×Íè µÔ´µ Í¡Ñº SRF05 âÁ´ÙÅµÃÇ¨¨ÑºáÅÐÇÑ´ÃÐÂÐ·Ò§´ ÇÂ¤Å×¹è ÍÑÅµÃ Òâ«¹Ô¡ 1. ·íÒ¡ÒÃµÔ´µÑ§é âÁ´ÙÅ SRF05 à¢ Ò¡ÑººÍÃ ´ ADX-SRF04 2. µ ÍÇ§¨ÃµÒÁÃÙ»·Õè 6 3. à¢ÕÂ¹â»Ãá¡ÃÁ·Õè 1 áÅ Ç·íÒ¡ÒÃá»Å§ãË à» ¹ä¿Å .hex ´ ÇÂ RC51 ¼ Ò¹¡ÃÐºÇ¹¡ÒÃ ÊÃ Ò§ä¿Å â»Ãà¨ç¡µ ¢Í§ Rkit-51 â´Âãª RIDE ä´ ä¿Å v51srf05.hex ´ÒÇ¹ âËÅ´Å§ã¹äÁâ¤Ã ¤Í¹â·ÃÅàÅÍÃ P89V51RD2 â´Âµ Í§Åº¢ ÍÁÙÅ¡ Í¹â»Ãá¡ÃÁÅ§ä»ãËÁ 4. ¨ ÒÂä¿ãË á¡ Ç§¨Ã ¹íÒÇÑµ¶ØÁÒÇÒ§¢ÇÒ§·Õ´è Ò ¹Ë¹ Ò¢Í§âÁ´ÙÅ SRF05ã¹ÃÐÂÐ 1 à«¹ µÔàÁµÃ¶Ö§ 4 àÁµÃ áÅ ÇÊÑ§à¡µ¼Å·Õâè Á´ÙÅ LCD ·Õâè Á´ÙÅ LCD áÊ´§¤ ÒÃÐÂÐ·Ò§·ÕÇè ´Ñ ä´ â´ÂÁÕÃ»Ù áºº¤×Í SRF-05

Demo...

Distance:

xxx

5. ¨Ò¡¹Ñ¹é ·´ÅÍ§ÇÑ´ÃÐÂÐË Ò§â´Âãª äÁ ºÃÃ·Ñ´à¾×Íè à»ÃÕÂºà·ÕÂº¼Å¡ÒÃ·´ÅÍ§·Õäè ´

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3.2 à¢ÕÂ¹â»Ãá¡ÃÁà¾×Íè Í Ò¹¤ Ò¨Ò¡âÁ´ÙÅ SRF05 ãª ¡ÒÃµÔ´µ Íáºº 2 ÊÑÒ³ÊíÒËÃÑº äÁâ¤Ã¤Í¹â·ÃÅàÅÍÃ PIC16F877 â´Âãª PICBASIC PRO compiler µ Í¢Ò RC4 µ Íà¢ Ò¡Ñº¢Ò ECHO áÅÐ ¢Ò RC3 µ Íà¢ Ò¡Ñº¢Ò TRIGGER ´Ñ§Ç§¨ÃÃÙ»·Õè 7 â»Ãá¡ÃÁ·Õè 2 à» ¹â»Ãá¡ÃÁµÑÇÍÂ Ò§·Õãè ª ÍÒ ¹¤ ÒÃÐÂÐ·Ò§·ÕÇè ´Ñ ä´ ¨Ò¡ SRF05 ¹íÒä»áÊ´§·Õè âÁ´ÙÅ LCD ¡ÒÃ·íÒ§Ò¹àÃÔÁè ¨Ò¡¡íÒË¹´ãË ¢Ò¾ÍÃ µ·Õãè ª ÊÒí ËÃÑºÊ §ÊÑÒ³¡ÃÐµØ¹ ä»ÂÑ§ SRF05 ÁÕÅÍ¨Ô¡ à» ¹ 0 ¡ Í¹ ¨Ò¡¹Ñ¹é àÃÕÂ¡â»Ãá¡ÃÁÂ ÍÂÍ Ò¹¢ ÍÁÙÅ¨Ò¡ SRF05 â´Ââ»Ãá¡ÃÁÂ ÍÂ¨Ð·íÒ§Ò¹´Ñ§¹Õé 1. Ç¹ÅÙ» 5 ÃÍº à¾×Íè Í Ò¹¤ Ò·Ñ§é ËÁ´ 5 ¤ÃÑ§é áÅ Ç¹íÒÁÒà©ÅÕÂè 2. Ê §¾ÑÅÊ 10 äÁâ¤ÃÇÔ¹Ò·Õ â´Âãª ¤Òí ÊÑ§è PULSOUT Ë¹ ÇÂ¢Í§¤ÇÒÁ¡Ç Ò§¾ÑÅÊ ÊÒí ËÃÑº ¤íÒÊÑè§¹Õé¤×Í 2 äÁâ¤ÃÇÔ¹Ò·Õ·Õè¤ÇÒÁ¶ÕèÊÑÒ³¹ÒÌ ¡ÒËÅÑ¡ 20MHz ¶ Òµ Í§¡ÒÃ¾ÑÅÊ 10 äÁâ¤ÃÇÔ¹Ò·Õ µ Í§¡íÒË¹´¤ ÒãË ¡ºÑ ¤íÒÊÑ§è PULSOUT à· Ò¡Ñº 5 3. Í Ò¹¤ Ò¤ÇÒÁ¡Ç Ò§¾ÑÅÊ à¾×Íè µÃÇ¨ÊÍºÃÐÂÐ·Õè SRF05 Í Ò¹¤ Òä´ â´Âãª ¤Òí ÊÑ§è PULSIN ¤íÒÊÑ§è ¹Õ¨é ÐÇÑ´¤ Ò¤ÇÒÁ¡Ç Ò§¾ÑÅÊ ªÇ §ºÇ¡ã¹Ë¹ ÇÂ 2 äÁâ¤ÃÇÔ¹Ò·Õ à¡çº¤ Ò·Õäè ´ äÇ ã¹µÑÇá»Ã RESULT 4. Ë¹ Ç§àÇÅÒ 10 ÁÔÅÅÔÇ¹Ô Ò·Õ¡Í ¹·Õ¨è ÐàÃÔÁè µ ¹Ç¹ÅÙ»·íÒ§Ò¹µÒÁ¢ Í 1 ãËÁ ¨¹¤Ãº 5 ÃÍº áÅ ÇÍÍ¡¨Ò¡â»Ãá¡ÃÁÂ ÍÂ ¼ÅÅÑ¾¸ ¨Ò¡¡ÒÃÇ¹ÅÙ» 5 ÃÍºà¡çºã¹µÑÇá»Ã RAW +5V 11

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TRIGGER

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R3 4k7

RC0 15

RC5

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RD7 RD6 RD5 RD4

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RS E

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ÃÙ»·Õè 7 Ç§¨Ã·´ÅÍ§µÔ´µ ÍäÁâ¤Ã¤Í¹â·ÃÅàÅÍÃ PIC16F877 ¡Ñº SRF05 âÁ´ÙÅÇÑ´ÃÐÂÐ·Ò§

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àÁ×Íè ÍÍ¡¨Ò¡â»Ãá¡ÃÁÂ ÍÂ â»Ãá¡ÃÁËÅÑ¡¨Ð¹íÒ¤ Ò·ÕÍè Ò ¹ä´ ÁÒËÒÃ´ ÇÂ 30 ¼ÅÅÑ¾¸ ·äÕè ´ ÁËÕ ¹ ÇÂ à» ¹à«¹µÔàÁµÃ áÅ Ç¹íÒÁÒáÊ´§·ÕèâÁ´ÙÅ LCD ¨Ò¡¹Ñé¹·íÒ¡ÒÃá»Å§¤ Ò·ÕèÍ Ò¹ä´ à» ¹¹ÔéÇ â´Âãª ¤ÇÒÁ ÊÑÁ¾Ñ¹¸ 1 à«¹µÔàÁµÃà· Ò¡Ñº 0.3937 ¹ÔÇé à¾×Íè ãË ¡ÒÃáÊ´§¤ Òä´ ¼ÅÅÑ¾¸ ·ÅÕè ÐàÍÕÂ´¢Ö¹é ¤ÇÃãË ÅÐàÍÕÂ´ à» ¹ 0.1 ¹ÔÇé ¨Ö§µ Í§¤Ù³´ ÇÂ 3.937 á·¹ @ DEVICE PIC16F877,HS_OSC ' Use PIC16F877 and HS Oscilator DEFINE OSC 20 DEFINE LCD_DREG PORTD ' Set LCD Data port DEFINE LCD_DBIT 4 ' Set starting Data bit for 4-bit interface DEFINE LCD_RSREG PORTC ' Set LCD Register Select port DEFINE LCD_RSBIT 0 ' Set LCD Register Select bit DEFINE LCD_EREG PORTC ' Set LCD Enable port DEFINE LCD_EBIT 5 ' Set LCD Enable bit DEFINE LCD_BITS 4 ' Set LCD bus size (4 or 8 bits) DEFINE LCD_LINES 2 ' Set number of lines on LCD DEFINE LCD_COMMANDUS 2000 ' Set command delay time in us DEFINE LCD_DATAUS 50 ' Set data delay time in us TRIGGER VAR PORTC.3 ECHO VAR PORTC.4 ' =====[ Variables ]====================================================== I VAR BYTE ' loop counter RESULT VAR WORD ' pulse width from sensor RAW VAR WORD ' filtered measurment CM VAR WORD ' centimeters INCH VAR WORD ' =====[ Initialization ]================================================== SETUP: LOW TRIGGER ' =====[ Program Code ]==================================================== MAIN: GOSUB GET_SONAR ' Take Sonar Reading CM = RAW /30 ' Convert to Centimeter LCDOUT $FE,$01,"CM = " , DEC CM , " CM" ' Show on LCD INCH = CM */ $03EF ' x 3.937 (to 0.1 inches) LCDOUT $FE,$C0,"INCH = ",DEC INCH/10,".",DEC1 INCH," INCH" ' Show on LCD GOTO MAIN END ' =====[ Subroutines ]==================================================== GET_SONAR: RAW = 0 ' Clear Measurement FOR I = 1 TO 5 ' Take 5 Samples PULSOUT TRIGGER,5 ' 10 uS Trigger Pulse PULSIN ECHO,1,RESULT ' Measure Pulse RAW = RAW + (RESULT / 5) ' Simple Digital Filter PAUSE 10 ' Minimum Period Between NEXT RETURN

ËÁÒÂàËµØ : ¡ÒÃ¤Ù³¤ Ò´ ÇÂµÑÇàÅ¢·Õèà» ¹·È¹ÔÂÁ ¨Ðãª ¤íÒÊÑè§¤Ù³àÅ¢áÅ Ç¹íÒàÍÒ¼ÅÅÑ¾¸ 16 ºÔµµÃ§¡ÅÒ§ÁÒãª ¤ Ò 3.937 àÁ×Íè á»Å§à» ¹µÑÇàÅ¢°Ò¹ÊÔºË¡¨ÐÁÕ¤Ò à· Ò¡Ñº 03EF â´Â 03 ¤×ÍµÑÇàÅ¢ã¹ËÅÑ¡Ë¹ ÇÂ Ê Ç¹ EF ¤×Í¤ ÒµÑÇàÅ¢·È¹ÔÂÁ

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3.3 à¢ÕÂ¹â»Ãá¡ÃÁà¾×Íè Í Ò¹¤ Ò¨Ò¡âÁ´ÙÅ SRF05 ãª ¡ÒÃµÔ´µ Íáºº 2 ÊÒÂÊÑÒ³ ÊíÒËÃÑº i-Stamp (àºÊÔ¡áÊµÁ» 2SX) áÅÐ i-Stamp2P (àºÊÔ¡áÊµÁ» 2P) 1. µ Í¢Ò P0 ¢Í§ i-Stamp ËÃ×Í i-Stamp2P à¢ Ò¡Ñº¨Ø´µ Í ECHO 2. µ Í¢Ò P0 ¢Í§ i-Stamp ËÃ×Í i-Stamp2P à¢ Ò¡Ñº¨Ø´µ Í TRIGGER 3. µ ÍÊÒÂÊÑÒ³·Õ¨è Òí à» ¹ ´Ñ§ã¹Ç§¨ÃÃÙ»·Õè 8 â»Ãá¡ÃÁ·Õè 3 à» ¹â»Ãá¡ÃÁµÑÇÍÂ Ò§·Õãè ª ÍÒ ¹¤ ÒÃÐÂÐ·Ò§·ÕÇè ´Ñ ä´ ¨Ò¡ SRF05 ¹íÒä»áÊ´§·Õè Ë¹ Òµ Ò§ Debug Terminal ¢Í§â»Ãá¡ÃÁàºÊÔ¡áÊµÁ» àÍ´ÔàµÍÃ â´Âã¹â»Ãá¡ÃÁ¹ÕÊé ÒÁÒÃ¶ãª ä´ ¡ºÑ ·Ñ§é i-Stamp (BS2SX : àºÊÔ¡áÊµÁ» 2SX), i-Stamp2P (BS2P : àºÊÔ¡áÊµÁ» 2P) áÅÐ BS2 (àºÊÔ¡ áÊµÁ» 2 ÃØ¹ ÁÒµÃ°Ò¹) â´Â¨ÐáÂ¡´ ÇÂä´àÃç¡µÕ¿·Õ¡è Òí Ë¹´ã¹Ê Ç¹ËÑÇ¢Í§â»Ãá¡ÃÁ

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¡ÒÃãª §Ò¹âÁ´ÙÅÇÑ´ÃÐÂÐ·Ò§ SRF05

' {$STAMP BS2sx} ' {$PBASIC 2.5} '*************************************************************************** ' SRF05 Ultra-Sonic Ranger demonstration code on BASIC Stamp 2,2e,2sx,2p,2pe,2px ' Using mode 1 (Mode pin leave no connect) ' Connect Trigger pin to transmit, Echo pin to receive '*************************************************************************** Trig_Pulse PIN 1 Echo PIN 0 Distance VAR Word LOW Trig_Pulse DO #IF ($STAMP = BS2SX) OR ($STAMP = BS2P) OR ($STAMP = BS2PX) #THEN PULSOUT Trig_Pulse,13 ' Pulse out 10.8 us PULSIN Echo,1,Distance ' Read positive pulse 0.8us per unit Distance = Distance */ $0161 ' Multiply by 1.379 convert unit as Millimeter DEBUG HOME,DEC5 Distance," mm.",CR PAUSE 100 #ELSE ' Case $Stamp BS2 , BS2E , BS2PE PULSOUT Trig_Pulse,5 ' Pulse out 10 us PULSIN Echo,1,Distance ' Read positive pulse 2us per unit IF Distance < 19000 THEN Distance = Distance */ $0373 ' Multiply by 3.448 convert unit as Millimeter DEBUG HOME,DEC5 Distance," mm.",CR ELSE Distance = Distance / 29 ' Divide by 29 convert unit as Centimeter DEBUG HOME,DEC5 Distance," cm.",CR ENDIF PAUSE 100 #ENDIF LOOP

â»Ãá¡ÃÁ·Õè 3 µÑÇÍÂ Ò§â»Ãá¡ÃÁÀÒÉÒ¾ÕàºÊÔ¡¢Í§ i-Stamp áÅÐ i-Stamp2P ÊíÒËÃÑºµÃÇ¨ÊÍº¡ÒÃ ·íÒ§Ò¹¢Í§ SRF05 âÁ´ÙÅÇÑ´ÃÐÂÐ·Ò§´ ÇÂ¤Å×¹è ÍÑÅµÃ Òâ«¹Ô¡ã¹âËÁ´¡ÒÃµÔ´µ Íáºº 2 ÊÒÂÊÑÒ³ ¡ÒÃ·íÒ§Ò¹àÃÔÁè ¨Ò¡¡íÒË¹´¢Ò¾ÍÃ µ·Õãè ª µ´Ô µ Í¡ÑºâÁ´ÙÅ SRF05 ¨Ò¡¹Ñ¹é Ê §¾ÑÅÊ ¡ÃÐµØ¹ ÍÍ¡ä» ÂÑ§âÁ´ÙÅ SRF05 ¨Ò¡¹Ñ¹é Í Ò¹¤ ÒÊÑÒ³¾ÑÅÊ ¡ÅÑºà¢ ÒÁÒ´ ÇÂ¤íÒÊÑ§è PULSIN ÁÒà¡çºäÇ ·µÕè ÇÑ á»Ã Distance ·íÒ¡ÒÃ¤íÒ¹Ç³¤ ÒÃÐÂÐ·Ò§ã¹Ë¹ ÇÂÁÔÅÅÔàÁµÃÍÍ¡ÁÒ´ ÇÂ¤íÒÊÑè§ Distance = Distance */ $0161 ¡Ã³Õãª ¡ºÑ i-Stamp áÅÐ i-Stamp2P áÅ ÇãË áÊ´§ÍÍ¡ÁÒ·ÕèË¹ Òµ Ò§ Debug Terminal ¨Ò¡¹Ñé¹¨Ð·íÒ¡ÒÃ¤íÒ¹Ç³à¾×èÍáÊ´§¤ ÒÃÐÂÐ ·Ò§ÍÍ¡ÁÒã¹Ë¹ ÇÂà«¹µÔàÁµÃ ´ ÇÂ¤íÒÊÑ§è Distance = Distance / 58 ¡Ã³Õãª ¡ºÑ i-Stamp áÅÐ i-Stamp2P áÅ ÇãË áÊ´§ÍÍ¡ÁÒ·ÕËè ¹ Òµ Ò§ Debug Terminal àª ¹¡Ñ¹ ¨Ò¡¹Ñ¹é Ë¹ Ç§àÇÅÒ 100 ÁÔÅÅÔÇ¹Ô Ò·Õ ¡ Í¹Ç¹¡ÅÑºä»Í Ò¹¤ ÒÍÕ¡¤ÃÑé§

¡ÒÃãª §Ò¹âÁ´ÙÅÇÑ´ÃÐÂÐ·Ò§ SRF05

3.4 à¢ÕÂ¹â»Ãá¡ÃÁà¾×Íè Í Ò¹¤ Ò¨Ò¡âÁ´ÙÅ SRF05 ãª ¡ÒÃµÔ´µ Íáºº 1 ÊÒÂÊÑÒ³ ÊíÒËÃÑº i-Stamp (àºÊÔ¡áÊµÁ» 2SX) áÅÐ i-Stamp2P (àºÊÔ¡áÊµÁ» 2P) 1. µ Í¢Ò P0 ¢Í§ i-Stamp ËÃ×Í i-Stamp2P à¢ Ò¡Ñº¨Ø´µ Í TRIGGER 2. µ Í¨Ø´µ Í MODE ¢Í§ SRF05 Å§¡ÃÒÇ´ 3. µ ÍÊÒÂÊÑÒ³·Õ¨è Òí à» ¹ ´Ñ§ã¹Ç§¨ÃÃÙ»·Õè 9 â»Ãá¡ÃÁ·Õè 4 à» ¹â»Ãá¡ÃÁµÑÇÍÂ Ò§Í Ò¹¤ ÒÃÐÂÐ·Ò§·ÕÇè ´Ñ ä´ ¨Ò¡ SRF05 «Ö§è ãª ¡ÒÃµÔ´µ Íáºº 1 ÊÒÂÊÑÒ³ ¹íÒä»áÊ´§·ÕËè ¹ Òµ Ò§ Debug Terminal ¢Í§â»Ãá¡ÃÁàºÊÔ¡áÊµÁ» àÍ´ÔàµÍÃ â´Âã¹ â»Ãá¡ÃÁ¹ÕÊé ÒÁÒÃ¶ãª ä´ ¡ºÑ ·Ñ§é i-Stamp (BS2SX : àºÊÔ¡áÊµÁ» 2SX), i-Stamp2P (BS2P : àºÊÔ¡ áÊµÁ» 2P) áÅÐ BS2 (àºÊÔ¡áÊµÁ» 2 ÃØ¹ ÁÒµÃ°Ò¹) â´Â¨ÐáÂ¡´ ÇÂä´àÃç¡µÕ¿·Õ¡è Òí Ë¹´ã¹Ê Ç¹ËÑÇ ¢Í§â»Ãá¡ÃÁ

0.1/50V x2

1 2 3 Tx Rx ATN

i-Stamp (BS2SX) i-Stamp2P (BS2P40)

TRIGGER

+5V

P1 GND

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K1 RS-232 (DB-9F)

S1 RESET

MODE

+5V

RES

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54. #

äÁ ÁÕ¡ÒÃµ Íãª §Ò¹·Õè¨Ø´àËÅ Ò¹Õé

ÃÙ»·Õè 9 Ç§¨Ã·´ÅÍ§µÔ´µ Í i-Stamp áÅÐ i-Stmp2P ¡Ñº SRF05 âÁ´ÙÅÇÑ´ÃÐÂÐ·Ò§ã¹áºº 1 ÊÒÂÊÑÒ³

¡ÒÃãª §Ò¹âÁ´ÙÅÇÑ´ÃÐÂÐ·Ò§ SRF05

' {$STAMP BS2sx} '*************************************************************************** ' SRF05 Ultra-Sonic Ranger demonstration code on BASIC Stamp 2,2e,2sx,2p,2pe,2px ' Using mode 2 (Mode pin tied to GND) ' Connect Trigger pin both transmit and receive '*************************************************************************** Trig_Echo PIN 1 Distance VAR Word LOW Trig_Echo DO #IF ($STAMP = BS2SX) OR ($STAMP = BS2P) OR ($STAMP = BS2PX) #THEN PULSOUT Trig_Echo,13 ' Pulse out 10.8 us PULSIN Trig_Echo,1,Distance ' Read positive pulse 0.8us per unit Distance = Distance */ $0161 ' Multiply by 1.379 convert unit as Millimeter DEBUG HOME,DEC5 Distance," mm.",CR PAUSE 100 #ELSE ' Case $Stamp BS2 , BS2E , BS2PE PULSOUT Trig_Echo,5 ' Pulse out 10 us PULSIN Trig_Echo,1,Distance ' Read positive pulse 2us per unit IF Distance < 19000 THEN Distance = Distance */ $0373 ' Multiply by 3.448 convert unit as Millimeter DEBUG HOME,DEC5 Distance," mm.",CR ELSE Distance = Distance / 29 ' Divide by 29 convert unit as Centimeter DEBUG HOME,DEC5 Distance," cm.",CR ENDIF PAUSE 100 #ENDIF LOOP

â»Ãá¡ÃÁ·Õè 4 µÑÇÍÂ Ò§â»Ãá¡ÃÁÀÒÉÒ¾ÕàºÊÔ¡¢Í§ i-Stamp áÅÐ i-Stamp2P ÊíÒËÃÑºµÃÇ¨ÊÍº¡ÒÃ ·íÒ§Ò¹¢Í§ SRF05 âÁ´ÙÅÇÑ´ÃÐÂÐ·Ò§´ ÇÂ¤Å×¹è ÍÑÅµÃ Òâ«¹Ô¡ã¹âËÁ´¡ÒÃµÔ´µ Íáºº 1 ÊÒÂÊÑÒ³

¡ÒÃãª §Ò¹âÁ´ÙÅÇÑ´ÃÐÂÐ·Ò§ SRF05

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