{"id":8586,"date":"2018-02-18T12:44:25","date_gmt":"2018-02-18T11:44:25","guid":{"rendered":"http:\/\/serveiseducatius.xtec.cat\/tarragones\/?p=8586"},"modified":"2018-03-08T16:55:24","modified_gmt":"2018-03-08T15:55:24","slug":"led-per-ultrasons","status":"publish","type":"post","link":"https:\/\/serveiseducatius.xtec.cat\/tarragones\/programes\/robotica\/led-per-ultrasons\/","title":{"rendered":"Led per ultrasons"},"content":{"rendered":"<figure id=\"attachment_8293\" aria-describedby=\"caption-attachment-8293\" style=\"width: 200px\" class=\"wp-caption alignright\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-8600 alignright\" src=\"http:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2018\/02\/sensor_ultrasons.jpg\" alt=\"\" width=\"200\" height=\"117\" \/><figcaption id=\"caption-attachment-8293\" class=\"wp-caption-text\"><sup><em>HC-SR04<\/em><\/sup><br \/><sup><em>Sensor d&#8217;ultrasons<\/em><\/sup><\/figcaption><\/figure>\n<p><iframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/w99ffFEH2GI\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p><b>Material:<\/b><br \/>\n1 tarja Arduino UNO, 1 sensor d&#8217;ultrasons HC-SR04, 1 led, 1 breadboard, 4 cables Dupont. <a href=\"https:\/\/playground.arduino.cc\/Code\/NewPing\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>Descarrega la llibreria NewPing<\/strong><\/a>.<\/p>\n<p><b>Descripci\u00f3:<\/b><br \/>\nEncendre un led quan el sensor d&#8217;ultrasons trobi un objecte entre 0 i 10cm.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-8598 alignright\" src=\"http:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2018\/02\/sensor-ultrasons-calcul.jpg\" alt=\"\" width=\"393\" height=\"150\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2018\/02\/sensor-ultrasons-calcul.jpg 393w, https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2018\/02\/sensor-ultrasons-calcul-300x115.jpg 300w\" sizes=\"auto, (max-width: 393px) 100vw, 393px\" \/><b>Mesurar la dist\u00e0ncia:<\/b><br \/>\nEl sensor d&#8217;ultrasons <strong>HC-SR04<\/strong> treballa en <strong>microsegons<\/strong> per <strong>cent\u00edmetre<\/strong> (1\/1.000.000<strong>\u00b5s<\/strong>)<br \/>\nSegons la Wikip\u00e8dia, la velocitat del s\u00f2 es de <strong>343,2<\/strong> metres per segon. O b\u00e9, <strong>34.320<\/strong> cent\u00edmetres per segon. O b\u00e9 <strong>1<\/strong> cent\u00edmetre per cada <strong>29,13<\/strong> microsegons.<br \/>\nT\u00e9 un rang de dist\u00e0ncies entre <strong>2<\/strong>cm. i <strong>5<\/strong>mt. amb una precisi\u00f3 de <strong>3<\/strong>mm.<br \/>\nEnvia un senyal a trav\u00e9s del &#8220;<strong>Trigger<\/strong> (gallet, disparador)&#8221; i el recull a trav\u00e9s del &#8220;<strong>Echo<\/strong> (eco)&#8221;. El resultat que obtenim del sensor \u00e9s el temps transcorregut entre l&#8217;enviament del senyal i el seu rebot en l&#8217;objecte mesurat. El detall que caldr\u00e0 tenir en compte \u00e9s que el valor resultant \u00e9s sempre la suma de l&#8217;anada i la tornada del senyal. Per exemple, un objecte que es troba a 2 mt del sensor ser\u00e0 mesurat pel temps que el so necessita per transc\u00f3rrer 4 mt (els 2 mt d&#8217;anada del senyal i els 2 mt de tornada del mateix senyal). Per la qual cosa ser\u00e0 sempre ser\u00e0 necessari dividir per <strong>2<\/strong> el valor del temps transcorregut per mesurar una determinada dist\u00e0ncia.<\/p>\n<p><b>Esquema amb Arduino IDE:<\/b><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-8596\" src=\"http:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2018\/02\/Ultraso_-_Sense_llibreria.jpg\" alt=\"\" width=\"600\" height=\"398\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2018\/02\/Ultraso_-_Sense_llibreria.jpg 600w, https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2018\/02\/Ultraso_-_Sense_llibreria-300x199.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<p><b>Programaci\u00f3 amb Arduino IDE:<\/b><\/p>\n<p>1.- Encendre un LED amb el sensor d&#8217;ultrasons HC-SR04 sense utilitzar cap llibreria<\/p>\n<p><script src=\"https:\/\/gist.github.com\/xgsxgs\/47d08366fbcd10b0024b046e7a4ba84e.js\"><\/script><br \/>\n<a href=\"http:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2018\/02\/robotica_ultraso_encendre-led_arduino-ide.zip\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2773 alignleft\" src=\"http:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2016\/12\/boto_descarregues_arduino.jpg\" alt=\"Leds en cascada per Arduino IDE\" width=\"200\" height=\"47\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>2.- Encendre un LED amb el sensor d&#8217;ultrasons HC-SR04 utilitzant la llibreria NewPing<\/p>\n<p><script src=\"https:\/\/gist.github.com\/xgsxgs\/e5999895ca04b41946252aef81873bd2.js\"><\/script><br \/>\n<a href=\"http:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2018\/02\/robotica_ultraso_encendre-le_arduino-ide_new-ping.zip\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2773 alignleft\" src=\"http:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2016\/12\/boto_descarregues_arduino.jpg\" alt=\"Leds en cascada per Arduino IDE\" width=\"200\" height=\"47\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p><b>Esquema amb mBlock:<\/b><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-4232 alignnone\" src=\"http:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2017\/02\/sensor-ultraso-avis-lluminos_petit.jpg\" alt=\"sensor-ultraso-avis-lluminos_petit\" width=\"400\" height=\"542\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2017\/02\/sensor-ultraso-avis-lluminos_petit.jpg 400w, https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2017\/02\/sensor-ultraso-avis-lluminos_petit-221x300.jpg 221w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/p>\n<p><b>Programaci\u00f3 amb mBlock:<\/b><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-4218 alignnone\" src=\"http:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2017\/02\/ultraso-avis-lluminos-mblock.jpg\" alt=\"ultraso-avis-lluminos-mblock\" width=\"400\" height=\"250\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2017\/02\/ultraso-avis-lluminos-mblock.jpg 400w, https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2017\/02\/ultraso-avis-lluminos-mblock-300x188.jpg 300w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/p>\n<p><a href=\"http:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2018\/02\/robotica_ultraso_encendre-led_mblock.zip\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2774 alignleft\" src=\"http:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2016\/12\/boto_descarregues_groc.jpg\" alt=\"Web shiny buttons. Vector illustration.\" width=\"200\" height=\"47\" \/><\/a>     <a href=\"http:\/\/www.arduinoblocks.com\/web\/project\/15063\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2774 alignleft\" src=\"http:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2018\/03\/boto_descarregues_verd.jpg\" alt=\"Web shiny buttons. Vector illustration.\" width=\"200\" height=\"47\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Encendre un led amb el sensor d&#8217;ultrasons<\/p>\n","protected":false},"author":1,"featured_media":8611,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[197],"tags":[215,221],"class_list":["post-8586","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-robotica","tag-leds","tag-sensors"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-json\/wp\/v2\/posts\/8586","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-json\/wp\/v2\/comments?post=8586"}],"version-history":[{"count":4,"href":"https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-json\/wp\/v2\/posts\/8586\/revisions"}],"predecessor-version":[{"id":8945,"href":"https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-json\/wp\/v2\/posts\/8586\/revisions\/8945"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-json\/wp\/v2\/media\/8611"}],"wp:attachment":[{"href":"https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-json\/wp\/v2\/media?parent=8586"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-json\/wp\/v2\/categories?post=8586"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-json\/wp\/v2\/tags?post=8586"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}