{"id":447,"date":"2014-10-04T14:59:33","date_gmt":"2014-10-04T12:59:33","guid":{"rendered":"http:\/\/jvelektronika.cz\/?page_id=447"},"modified":"2014-12-13T06:15:09","modified_gmt":"2014-12-13T05:15:09","slug":"arduino-uno-flashing-leds","status":"publish","type":"page","link":"https:\/\/jvelektronika.cz\/?page_id=447","title":{"rendered":"Arduino UNO-flashing leds"},"content":{"rendered":"

Arduino UNO-flashing leds<\/span><\/h1>\n

NA KONCI STR\u00c1NKY JE VLO\u017dENO VIDEO<\/span><\/strong><\/p>\n

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V historicky prvn\u00edm videu o Arduino na m\u00e9m webu ( jvelektronika ), se pod\u00edv\u00e1me na zcela jednoduch\u00fd program, kter\u00fd n\u00e1m rozblik\u00e1 led diodu s p\u0159ed\u0159adn\u00fdm rezistorem.<\/p>\n

Nejprve se pod\u00edv\u00e1me na sch\u00e9ma zapojen\u00ed led diody.<\/p>\n

( OMLOUV\u00c1M SE ZA KVALITU OBR\u00c1ZKU. V BRK\u00c9 DOB\u011a BUDE NAHRAZEN )<\/p>\n

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Je nutn\u00e9 si uv\u011bdomit, \u017ee nen\u00ed jen tak napsat jakk\u00fdkoliv program pro v\u00fdvojovou desku a zvl\u00e1\u0161t\u011b pak, jedn\u00e1-li se o led diody. Rozli\u0161ujeme nap\u0159. supersv\u00edtiv\u00e9 led diody, klasick\u00e9 difuzn\u00ed led diody a samoz\u0159ejm\u011b barvy.<\/p>\n

Ka\u017ed\u00e1 barva jednotliv\u00e9ho typu a modelu led diody se toti\u017e rozsv\u011bc\u00ed na jin\u00e9 nap\u011bt\u00ed a proto mus\u00edme zn\u00e1t, jak\u00fd proud led dioda odeb\u00edr\u00e1 a mus\u00edme zn\u00e1t na jak\u00e9 nap\u011bt\u00ed je dimenzovann\u00e1.<\/p>\n

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P\u0159ed\u0159adn\u00fd rezistor, lze spo\u010d\u00edtat pomoc\u00ed jednoduch\u00e9ho vzore\u010dku a to:<\/p>\n

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P\u0158ED\u0158ADN\u00dd REZISTOR – ODPOR<\/span><\/strong><\/h3>\n

Rezistor – je sou\u010d\u00e1stka.<\/p>\n

Odpor – je hodnota rezistoru ( nap\u0159. 1K )<\/p>\n

Je nutn\u00e9 si uv\u011bdomit n\u011b\u017e za\u010dneme po\u010d\u00edtat, \u017ee ka\u017ed\u00e1 led dioda m\u00e1 jin\u00e9 vlastnosti a proto je t\u0159eba v\u011bd\u011bt jak\u00fd m\u00e1te typ a druh led diody. M\u00e1me t\u0159eba \u010dervenou vysocesv\u00edtivou 5mm, ale je v\u00edce variac\u00ed nap\u0159. jin\u00e1 sv\u00edtivost a t\u00edm p\u00e1dem i jina\u010d\u00ed parametry.<\/p>\n

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Do vzore\u010dku dosazujeme hodnoty v z\u00e1kladn\u00edch jednotk\u00e1ch – I = ( A ), U = ( V )<\/p>\n

…….p\u0159. I = 100mA = 0,1A<\/strong><\/p>\n

I = 22mA = 0,022A<\/strong><\/p>\n

V\u00fdsledn\u00e1 hodnota rezistoru bude v – R = ( \u2126 )<\/p>\n

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\"\"<\/p>\n

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Rv = V\u00fdsledn\u00fd odpor<\/p>\n

Ucelk. = Nap\u011bt\u00ed, kter\u00fdm budeme nap\u00e1jet led diodu<\/p>\n

Uled = Nap\u011bt\u00ed led diody p\u0159i kter\u00e9m se rozsv\u011bc\u00ed (\u00a0 U prodejce, nebo v odborn\u00fdch knih\u00e1ch, tabulky atd. )<\/p>\n

I = Proud led ( U prodejce, nebo v odborn\u00fdch knih\u00e1ch, tabulky atd. )<\/p>\n

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Poku\u010f v\u00fdsledn\u00e1 hodnota nen\u00ed v \u0159ad\u011b E12… Vyberte hodnutu v\u011bt\u0161\u00ed, kter\u00e1 je nejbl\u00ed\u017ee v \u0159ad\u011b.<\/span><\/p>\n

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V m\u00e9m p\u0159\u00edpad\u011b na modrou LED DIODU byl pou\u017eit rezistor 360\u03a9<\/p>\n

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SOFTWARE, kter\u00fdm lze nahr\u00e1t progr\u00e1m do v\u00fdvojov\u00e9 desky, lze st\u00e1hnout na str\u00e1nk\u00e1ch\u00a0 http:\/\/arduino.cc\/<\/a>\u00a0 m\u011b osobn\u011b funguje na Windows 8.1<\/div>\n
Program od v\u00fdrobce nab\u00edz\u00ed tak\u00e9 automatickou kontroclu chyb v napsan\u00e9m programu a \u010derven\u011b zv\u00fdrazn\u00ed, poku\u010f je tam n\u011bjak\u00e1 chybu, tu sta\u010d\u00ed pot\u00e9 opravit \u010di odstranit a znova prov\u00e9st kontrolu a kdy\u017e bude v\u0161e v po\u0159\u00e1dku, tak pot\u00e9 lze napsan\u00fd progr\u00e1m uploadovat do Arduina.<\/div>\n

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Program pro nahr\u00e1n\u00ed do Arduina:<\/p>\n

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\"blik<\/a><\/span><\/strong>
\n<\/span><\/strong><\/p>\n

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Pro nap\u00e1jen\u00ed Arduina jsem pou\u017eil ADAPT\u00c9R STEJNOSM\u011aRN\u00c9HO PROUDU S V\u00ddSTUPEM 9V \/ 100mA<\/p>\n

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A nyn\u00ed video:<\/p>\n

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