{"id":78586,"date":"2024-03-28T14:00:36","date_gmt":"2024-03-28T13:00:36","guid":{"rendered":"https:\/\/botland.com.pl\/blog\/mux-co-to-jest-i-do-czego-sluzy\/"},"modified":"2026-04-08T10:59:53","modified_gmt":"2026-04-08T08:59:53","slug":"mux-co-je-to-a-k-cemu-se-pouziva","status":"publish","type":"post","link":"https:\/\/botland.cz\/blog\/mux-co-je-to-a-k-cemu-se-pouziva\/","title":{"rendered":"MUX – Co je to a k \u010demu se pou\u017e\u00edv\u00e1?"},"content":{"rendered":"\u010cas \u010dten\u00ed:<\/span> 3<\/span> min.<\/span><\/span>\t\t
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Expand\u00e9ry v\u00fdstup\u016f pro Arduino jsou elektronick\u00e9 moduly, kter\u00e9 po p\u0159ipojen\u00ed k mikrokontrol\u00e9ru zvy\u0161uj\u00ed po\u010det vstupn\u00edch\/v\u00fdstupn\u00edch (I\/O) pin\u016f.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Co jsou to expand\u00e9ry v\u00fdstup\u016f pro mikrokontrol\u00e9ry?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Expand\u00e9ry v\u00fdstup\u016f <\/strong><\/a>kompatibiln\u00ed s mikrokontrol\u00e9ry, jako jsou Arduino<\/strong><\/a>jsou popul\u00e1rn\u00ed elektronick\u00e9 moduly, jejich\u017e hlavn\u00edm \u00fa\u010delem je zv\u00fd\u0161it po\u010det dostupn\u00fdch vstupn\u00edch\/v\u00fdstupn\u00edch (I\/O) pin\u016f. P\u0159ipojen\u00ed expand\u00e9ru umo\u017e\u0148uje rychl\u00e9 a snadn\u00e9 p\u0159ipojen\u00ed r\u016fzn\u00fdch typ\u016f za\u0159\u00edzen\u00ed nebo extern\u00edho p\u0159\u00edslu\u0161enstv\u00ed.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Expand\u00e9ry<\/strong> jsou u\u017eite\u010dn\u00e9 zejm\u00e9na v projektech, kter\u00e9 pro spr\u00e1vnou funkci vy\u017eaduj\u00ed v\u00edce vstup\u016f a v\u00fdstup\u016f, ne\u017e je na desce k dispozici. Arduino<\/strong><\/a>. Roz\u0161\u00ed\u0159en\u00ed tohoto typu se pou\u017e\u00edvaj\u00ed v projektech dom\u00e1c\u00ed automatizace a robotiky. <\/p>\n

R\u016fzn\u00e9 expand\u00e9ry v\u00fdstup\u016f se li\u0161\u00ed funk\u010dnost\u00ed, po\u010dtem pin\u016f, pou\u017eit\u00edm, kompatibilitou a komunika\u010dn\u00edmi rozhran\u00edmi. Vybran\u00e9 modely nap\u0159\u00edklad vyu\u017e\u00edvaj\u00ed s\u00e9riovou komunikaci, jako je 12C a SPI. Vybran\u00e9 expand\u00e9ry nav\u00edc umo\u017e\u0148uj\u00ed analogov\u011b-digit\u00e1ln\u00ed p\u0159evod.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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Expand\u00e9r v\u00fdstupu MCP23017 - 16 I\/O pin\u016f.<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Dal\u0161\u00ed aplikace expand\u00e9r\u016f v\u00fdstup\u016f<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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K \u010demu jin\u00e9mu se pou\u017e\u00edvaj\u00ed expand\u00e9ry v\u00fdstup\u016f<\/strong><\/a>? Jsou ide\u00e1ln\u00ed pro vzd\u011bl\u00e1vac\u00ed projekty (v\u010detn\u011b ovl\u00e1d\u00e1n\u00ed robot\u016f). Krom\u011b toho se pou\u017e\u00edvaj\u00ed v m\u011b\u0159ic\u00edch stanic\u00edch a syst\u00e9mech, kter\u00e9 by nebylo mo\u017en\u00e9 provozovat pouze pomoc\u00ed mikrokontrol\u00e9ru. Hlavn\u00edmi v\u00fdhodami expand\u00e9r\u016f v\u00fdstup\u016f jsou jejich flexibilita, \u0161k\u00e1lovatelnost a snadn\u00e9 p\u0159ipojen\u00ed k hostitelsk\u00e9mu za\u0159\u00edzen\u00ed.<\/p>\n

Krom\u011b toho lze d\u00edky expand\u00e9r\u016fm v\u00fdstup\u016f rychle roz\u0161\u00ed\u0159it st\u00e1vaj\u00edc\u00ed syst\u00e9my o dal\u0161\u00ed funkce a p\u0159ipojit r\u016fzn\u00e9 typy senzor\u016f. D\u00edky s\u00e9riov\u00e9 komunikaci (I2C nebo SPI) je pot\u0159eba kabel\u00e1\u017ee omezena na minimum.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Mux Shield II - Expand\u00e9r v\u00fdstupu pro Arduino<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Expand\u00e9r v\u00fdstupu Mux Shield II pro Arduino.<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Mux Shield II<\/strong><\/a> od SparkFun<\/strong><\/a> je obl\u00edben\u00fd expand\u00e9r v\u00fdstupu kompatibiln\u00ed s mikrokontrol\u00e9rem Arduino. P\u0159ipojen\u00ed expand\u00e9ru roz\u0161i\u0159uje pou\u017eitelnost mikrokontrol\u00e9ru t\u00edm, \u017ee zvy\u0161uje po\u010det voln\u00fdch vstupn\u00edch\/v\u00fdstupn\u00edch pin\u016f na 48.<\/p>\n

Z\u00e1kladem expand\u00e9ru v\u00fdstupu Mux Shield II<\/strong> jsou t\u0159i analogov\u00e9 obvody, kter\u00e9 umo\u017e\u0148uj\u00ed roz\u0161\u00ed\u0159en\u00ed dostupn\u00fdch digit\u00e1ln\u00edch a analogov\u00fdch pin\u016f Arduino. Ty umo\u017e\u0148uj\u00ed p\u0159ipojit k desce v\u00edce p\u0159\u00edslu\u0161enstv\u00ed a za\u0159\u00edzen\u00ed, v\u010detn\u011b tla\u010d\u00edtek, LED diod a r\u016fzn\u00fdch typ\u016f senzor\u016f. P\u0159ipojen\u00edm Mux Shield II se konektory p\u0159esunou na stranu Arduino. Toto \u0159e\u0161en\u00ed zaji\u0161\u0165uje voln\u00fd p\u0159\u00edstup a snadn\u00e9 p\u0159ipojen\u00ed p\u0159\u00edslu\u0161enstv\u00ed.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Technick\u00e9 specifikace Mux Shield II<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Expand\u00e9r v\u00fdstupu Mux Shield II<\/strong><\/a> nab\u00edz\u00ed a\u017e 16 digit\u00e1ln\u00edch vstup\u016f\/v\u00fdstup\u016f a 16 analogov\u00fdch vstup\u016f\/v\u00fdstup\u016f. Krom\u011b toho jej lze roz\u0161\u00ed\u0159it na 48 vstup\u016f\/v\u00fdstup\u016f pomoc\u00ed v\u0161ech t\u0159\u00ed roz\u0161i\u0159uj\u00edc\u00edch obvod\u016f. Piny Mux Shield II jsou p\u0159\u00edstupn\u00e9 p\u0159es konektory kompatibiln\u00ed s Arduino. Expand\u00e9r Mux Shield II je nap\u00e1jen p\u0159\u00edmo z Arduino.<\/p>\n

Pou\u017eit\u00ed expand\u00e9ru v\u00fdstupu Mux Shield II<\/strong> je velmi \u0161irok\u00e9. Nej\u010dast\u011bji se pou\u017e\u00edv\u00e1 v r\u016fzn\u00fdch projektech pro kutily a tak\u00e9 p\u0159i v\u00fdrob\u011b prototyp\u016f. Krom\u011b toho spolu s mikrokontrol\u00e9rem Arduino<\/strong><\/a> se pou\u017e\u00edv\u00e1 v projektech Smart Home,<\/strong><\/a>robotiky a automatizace. Krom\u011b toho se expand\u00e9ry pou\u017e\u00edvaj\u00ed pro projekty, jejich\u017e hlavn\u00edm \u00fa\u010delem je monitorov\u00e1n\u00ed stavu \u017eivotn\u00edho prost\u0159ed\u00ed. Mo\u017enost rychl\u00e9ho a snadn\u00e9ho p\u0159ipojen\u00ed senzor\u016f m\u011b\u0159\u00edc\u00edch teplotu vzduchu, vlhkost, tlak a rychlost v\u011btru v\u00e1m umo\u017en\u00ed vytvo\u0159it si vlastn\u00ed meteorologickou stanici.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Dal\u0161\u00ed informace o Mux Shield II<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Expand\u00e9r v\u00fdstupu Mux Shield II<\/strong><\/a> je praktick\u00fdm \u0159e\u0161en\u00edm pro u\u017eivatele, kte\u0159\u00ed cht\u011bj\u00ed roz\u0161\u00ed\u0159it funk\u010dnost sv\u00e9 st\u00e1vaj\u00edc\u00ed platformy, ani\u017e by museli kupovat nov\u00fd mikrokontrol\u00e9r. Mux Shield II<\/strong> se jednodu\u0161e a intuitivn\u011b pou\u017e\u00edv\u00e1, tak\u017ee je vhodn\u00fd i pro za\u010d\u00e1te\u010dn\u00edky v elektronice a hobbyisty.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Qwiic Mux Breakout modul kompatibiln\u00ed s Arduino<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Dal\u0161\u00edm zaj\u00edmav\u00fdm n\u00e1vrhem je modul Qwiic Mux Breakout<\/strong><\/a>. Jednotka je vybavena 8kan\u00e1lov\u00fdm multiplexorem TCA9548A. <\/p>\n

Multiplexer umo\u017e\u0148uje p\u0159ipojit a\u017e osm r\u016fzn\u00fdch za\u0159\u00edzen\u00ed, nap\u0159. sn\u00edma\u010de, displeje a \u0159\u00eddic\u00ed jednotky motor\u016f, k jedn\u00e9 sb\u011brnici I2C mikrokontrol\u00e9ru (nap\u0159. Arduino). Toto \u0159e\u0161en\u00ed nejen\u017ee omezuje vyu\u017eit\u00ed dostupn\u00fdch pin\u016f na minimum, ale tak\u00e9 usnad\u0148uje spr\u00e1vu slo\u017eit\u00fdch syst\u00e9m\u016f.<\/p>\n

Sb\u011brnice I2C nav\u00edc umo\u017e\u0148uje zm\u011bnu adresy, tak\u017ee je mo\u017en\u00e9 p\u0159ipojit a\u017e 64 za\u0159\u00edzen\u00ed 12C. Krom\u011b toho je modul Mux Breakout<\/strong> vybaven konektory QWIIC, kter\u00e9 umo\u017e\u0148uj\u00ed p\u0159ipojen\u00ed p\u0159\u00edslu\u0161enstv\u00ed bez nutnosti p\u00e1jen\u00ed.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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Qwiic Mux Breakout - 8kan\u00e1lov\u00fd modul s I2C multiplexorem.<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tPOD\u00cdVEJTE SE NA<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Vysoce v\u00fdkonn\u00e9 j\u00e1dro modulu, \u010dip TCA9548A<\/strong>, umo\u017e\u0148uje stabiln\u011b zpracov\u00e1vat 8 kan\u00e1l\u016f sou\u010dasn\u011b. Jeho j\u00e1drem je \u010dip TCA9548A. Modul je navr\u017een tak, aby mohl pracovat s nap\u011bt\u00edm od 1,65 V do 5,5 V, tak\u017ee je \u0161iroce kompatibiln\u00ed s mikrokontrol\u00e9ry<\/strong><\/a>.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Pou\u017eit\u00ed modulu SparkFun Qwiic Mux Breakout<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Modu\u0142 Qwiic Mux Breakout<\/strong><\/a> slou\u017e\u00ed k roz\u0161\u00ed\u0159en\u00ed mo\u017enost\u00ed r\u016fzn\u00fdch typ\u016f syst\u00e9m\u016f zalo\u017een\u00fdch na mikrokontrol\u00e9rech s omezen\u00fdm po\u010dtem pin\u016f. Modul Qwiic Mux Breakout<\/strong> by SparkFun<\/strong><\/a> se b\u011b\u017en\u011b pou\u017e\u00edv\u00e1 v r\u016fzn\u00fdch projektech internetu v\u011bc\u00ed<\/strong> (IoT) a k podpo\u0159e jednoduch\u00fdch i slo\u017eit\u00fdch syst\u00e9m\u016f (nap\u0159. \u0159\u00edzen\u00ed). Krom\u011b toho bude expander Qwiic Mux Breakout<\/strong> u\u017eite\u010dn\u00fd v\u0161ude tam, kde je pot\u0159eba efektivn\u011b spravovat za\u0159\u00edzen\u00ed 12C.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Jak p\u0159ipojit expand\u00e9r k mikrokontrol\u00e9ru Arduino?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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P\u0159ipojen\u00ed expand\u00e9ru v\u00fdstupu k mikrokontrol\u00e9ru Arduino<\/strong><\/a> z\u00e1vis\u00ed na konkr\u00e9tn\u00edm modelu expand\u00e9ru a zp\u016fsobu komunikace (nap\u0159. 12C). Prvn\u00edm krokem je identifikace pin\u016f 12C na desce. Dal\u0161\u00edm krokem je vyhled\u00e1n\u00ed odpov\u00eddaj\u00edc\u00edch pin\u016f na expand\u00e9ru (mohou b\u00fdt ozna\u010deny SCL a SDA).<\/p>\n

P\u0159ipojen\u00ed nap\u00e1jen\u00ed vy\u017eaduje p\u0159ipojen\u00ed v\u00fdvodu VCC (nap\u00e1jen\u00ed) expand\u00e9ru k pinu 5 V na mikrokontrol\u00e9ru Arduino. N\u00e1sledn\u011b mus\u00ed b\u00fdt pin GND expand\u00e9ru p\u0159ipojen k pinu GND Arduino. V dal\u0161\u00edm kroku propojte piny SDA a SCL expand\u00e9ru s piny SDA a SCL Arduino. Posledn\u00ed f\u00e1z\u00ed je testov\u00e1n\u00ed p\u0159ipojen\u00ed.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

Co jsou expand\u00e9ry v\u00fdstup\u016f? Jak\u00e9 je jejich vyu\u017eit\u00ed? Co stoj\u00ed za to v\u011bd\u011bt o SparkFun Qwiic Mux Breakout a Mux Shield II?<\/p>\n","protected":false},"author":21,"featured_media":77687,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[555,548,549],"tags":[],"class_list":["post-78586","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-arduino-cs","category-elektronika-cs","category-kompendium-cs"],"acf":[],"yoast_head":"\nMUX - Co je to a k \u010demu se pou\u017e\u00edv\u00e1? - Botland<\/title>\n<meta name=\"description\" content=\"Co jsou expand\u00e9ry v\u00fdstup\u016f? Jak\u00e9 je jejich vyu\u017eit\u00ed? 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