{"id":7799,"date":"2017-12-14T16:18:27","date_gmt":"2017-12-14T15:18:27","guid":{"rendered":"http:\/\/serveiseducatius.xtec.cat\/tarragones\/?p=7799"},"modified":"2019-01-24T19:00:13","modified_gmt":"2019-01-24T18:00:13","slug":"motor-pas-a-pas-i-potenciometre","status":"publish","type":"post","link":"https:\/\/serveiseducatius.xtec.cat\/tarragones\/programes\/robotica\/motor-pas-a-pas-i-potenciometre\/","title":{"rendered":"Motor pas-a-pas i potenci\u00f2metre"},"content":{"rendered":"<p><iframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/3PL8ldndI-w\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p><b>Material:<\/b><br \/>\n1 tarja Arduino UNO, 1 motor pas a pas bipolar 28BYJ-48 5V, 1 controladora de motors ULN2003, 1 potenci\u00f2metre, 1 breadboard, 10 cables Dupont.<\/p>\n<p><b>Descripci\u00f3:<\/b><br \/>\nDespla\u00e7ament del gir d\u2019un motor pas a pas a trav\u00e9s dels graus d\u2019una circumfer\u00e8ncia expressats a trav\u00e9s d&#8217;un potenci\u00f2metre. En la pr\u00e0ctica amb Arduino IDE no s\u2019utilitza cap llibreria, per\u00f2 amb la pr\u00e0ctica amb mBlock es fa servir la llibreria \u201cstepper.h\u201d que caldr\u00e0 instal\u00b7lar des de mBlock \/ Extensions \/ Manage extensions \/ Stepper (Thomas Goorden).<br \/>\nS\u2019utilitzen els ports 8, 9, 10 i 11 connectats a IN1, IN2, IN3 i IN4 de la controladora ULN2003 respectivament i el port A0 per l&#8217;entrada del senyal del potenci\u00f2metre.<br \/>\nEl potenci\u00f2metre d\u00f3na uns valors entre 0 i 1023 que convertim a graus en el rang entre 0 i 360.<br \/>\nEl motor necessita de 4 passos per a fer una sola rotaci\u00f3 de l\u2019eix del motor. Tenint en compte tots els engranatges reductors que porta incorporats necessita 512 rotacions del motor per a descriure els 360 graus d\u2019una circumfer\u00e8ncia. Tot plegat implica un total de 2048 passos (512 x 4). En la programaci\u00f3 d\u2019Arduino IDE ens referim a les 512 rotacions del motor, mentre que en la programaci\u00f3 de mBlock ens referim als 2048 passos necessaris per a rec\u00f3rrer els 360 graus.<\/p>\n<p><b>Esquema:<\/b><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-7866 alignnone\" src=\"http:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2017\/12\/Motor_pas-a-pas_-_Gir-amb-potenciometre-1.jpg\" alt=\"\" width=\"700\" height=\"565\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2017\/12\/Motor_pas-a-pas_-_Gir-amb-potenciometre-1.jpg 700w, https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2017\/12\/Motor_pas-a-pas_-_Gir-amb-potenciometre-1-300x242.jpg 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/p>\n<p><b>Programaci\u00f3 amb Arduino IDE:<\/b><br \/>\n<script src=\"https:\/\/gist.github.com\/xgsxgs\/6ca8a216d246365689810a71c5ea3d20.js\"><\/script><\/p>\n<p><b>Programaci\u00f3 amb mBlock:<\/b><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-7862 alignnone\" src=\"http:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2017\/12\/Motor_pas-a-pas_-_Gir-amb-potenciometre_mblock.jpg\" alt=\"\" width=\"700\" height=\"324\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2017\/12\/Motor_pas-a-pas_-_Gir-amb-potenciometre_mblock.jpg 700w, https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2017\/12\/Motor_pas-a-pas_-_Gir-amb-potenciometre_mblock-300x139.jpg 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/p>\n<p><b>Desc\u00e0rregues:<\/b><\/p>\n<p><a href=\" https:\/\/create.arduino.cc\/editor\/xgranell\/ff65def0-f0d2-4a81-ab4f-b16f0c0b9db5\/preview\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-10196 alignleft\" src=\"https:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2016\/12\/boto_descarregues_arduino-create.jpg\" alt=\"Servo i potenci\u00f2metre\" width=\"200\" height=\"47\" \/><\/a> <a href=\"http:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2017\/12\/Motor_pas-a-pas_-_Gir-amb-potenciometre_arduino-ide.zip\" target=\"_blank\" rel=\"noopener noreferrer\"><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=\"Pas-a-pas i potenci\u00f2metre\" width=\"200\" height=\"47\" \/><\/a> <a href=\"http:\/\/serveiseducatius.xtec.cat\/tarragones\/wp-content\/uploads\/usu549\/2017\/12\/Motor_pas-a-pas_-_Gir-amb-potenciometre_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=\"Pas-a-pas i potenci\u00f2metre\" width=\"200\" height=\"47\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Control d\u2019un motor pas-a-pas a trav\u00e9s d\u2019un potenci\u00f2metre<\/p>\n","protected":false},"author":1,"featured_media":7810,"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 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