{"id":33149,"date":"2024-07-12T11:16:23","date_gmt":"2024-07-12T09:16:23","guid":{"rendered":"https:\/\/projectes.xtec.cat\/pensament-computacional\/?post_type=nodes_recursos&#038;p=33149"},"modified":"2024-09-18T12:50:26","modified_gmt":"2024-09-18T10:50:26","slug":"mesurem-lacceleracio-de-la-gravetat-amb-esp32-steamakers","status":"publish","type":"nodes_recursos","link":"https:\/\/projectes.xtec.cat\/pensament-computacional\/recursos\/mesurem-lacceleracio-de-la-gravetat-amb-esp32-steamakers\/","title":{"rendered":"Mesurem l&#8217;acceleraci\u00f3 de la gravetat amb ESP32 STEAMakers"},"content":{"rendered":"\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-6 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-1 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"has-text-align-center has-small-font-size\"><a href=\"https:\/\/drive.google.com\/thumbnail?id=1BduMefZu8pBjFpCP9tJLqHNCgKBnZOI3\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/drive.google.com\/thumbnail?id=1BduMefZu8pBjFpCP9tJLqHNCgKBnZOI3\" alt=\"ESP32 STEAMakers\"><\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-2 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"has-text-align-center has-small-font-size\"><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"has-text-align-center has-small-font-size\"><\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-3 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"has-text-align-center has-small-font-size\"><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"has-text-align-center has-small-font-size\"><\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-4 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"has-text-align-center has-small-font-size\"><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"has-text-align-center has-small-font-size\"><\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-5 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column caixa2 is-layout-flow wp-block-column-is-layout-flow\">\n<h4 class=\"wp-block-heading has-text-align-center has-ast-global-color-5-color has-ast-global-color-0-background-color has-text-color has-background\" style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding-top:var(--wp--preset--spacing--30);padding-right:0;padding-bottom:var(--wp--preset--spacing--30);padding-left:0\"><strong>ESO<\/strong><\/h4>\n\n\n\n<h6 class=\"wp-block-heading has-text-align-center has-ast-global-color-1-color has-pale-cyan-blue-background-color has-text-color has-background has-small-font-size\" style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding-top:var(--wp--preset--spacing--20);padding-right:0;padding-bottom:var(--wp--preset--spacing--20);padding-left:0\"><strong>1r, 2n, 3r<\/strong><\/h6>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-getwid-tabs active-tab2 tablinks-active2\" data-active-tab=\"0\"><ul class=\"wp-block-getwid-tabs__nav-links\"><\/ul>\n<div class=\"wp-block-getwid-tabs__nav-link\"><span class=\"wp-block-getwid-tabs__title-wrapper\"><a href=\"#\"><span class=\"wp-block-getwid-tabs__title\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-1-color\"><strong>General<\/strong><\/mark><\/span><\/a><\/span><\/div><div class=\"wp-block-getwid-tabs__tab-content-wrapper\"><div class=\"wp-block-getwid-tabs__tab-content\">\n<div class=\"wp-block-getwid-section caixa2 getwid-margin-top-none\"><div class=\"wp-block-getwid-section__wrapper getwid-padding-top-none getwid-padding-left-none getwid-padding-right-none getwid-margin-left-none getwid-margin-right-none\"><div class=\"wp-block-getwid-section__inner-wrapper\"><div class=\"wp-block-getwid-section__background-holder\"><div class=\"wp-block-getwid-section__background\"><\/div><div class=\"wp-block-getwid-section__foreground\"><\/div><\/div><div class=\"wp-block-getwid-section__content\"><div class=\"wp-block-getwid-section__inner-content\">\n<h5 class=\"wp-block-heading has-pale-cyan-blue-background-color has-background\" style=\"margin-top:0;margin-bottom:0;padding-top:var(--wp--preset--spacing--30);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--30)\"><strong>Descripci\u00f3 de l&#8217;activitat<\/strong><\/h5>\n\n\n\n<p style=\"margin-top:var(--wp--preset--spacing--20);margin-right:0;margin-bottom:var(--wp--preset--spacing--20);margin-left:0;padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--30)\">C\u00e0lcul aproximat de l\u2019acceleraci\u00f3 de la gravetat a partir de la mesura del temps que triga una bola a baixar rodolant per un pla amb inclinaci\u00f3 variable. Les mesures es fan amb un tel\u00e8fon m\u00f2bil o una tauleta que controla mitjan\u00e7ant Bluetooth una placa ESP32 STEAMakers equipada amb un servomotor (que allibera la bola) i un sensor d\u2019infraroigs (que detecta quan la bola ha arribat a la base del pla).<\/p>\n<\/div><\/div><\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-getwid-section getwid-margin-top-none\"><div class=\"wp-block-getwid-section__wrapper getwid-padding-left-none getwid-padding-right-none getwid-margin-left-none getwid-margin-right-none\"><div class=\"wp-block-getwid-section__inner-wrapper\"><div class=\"wp-block-getwid-section__background-holder\"><div class=\"wp-block-getwid-section__background\"><\/div><div class=\"wp-block-getwid-section__foreground\"><\/div><\/div><div class=\"wp-block-getwid-section__content\"><div class=\"wp-block-getwid-section__inner-content\">\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div><\/div><\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h5 class=\"wp-block-heading has-pale-cyan-blue-background-color has-background\" style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--30)\"><strong>Material necessari<\/strong><\/h5>\n\n\n\n<div style=\"margin-top:0;margin-bottom:0;height:7px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-getwid-section getwid-margin-top-none getwid-margin-bottom-none\"><div class=\"wp-block-getwid-section__wrapper getwid-padding-top-none getwid-padding-bottom-none getwid-padding-left-none getwid-padding-right-none getwid-margin-left-none getwid-margin-right-none\"><div class=\"wp-block-getwid-section__inner-wrapper\"><div class=\"wp-block-getwid-section__background-holder\"><div class=\"wp-block-getwid-section__background has-background has-ast-global-color-5-background-color\"><\/div><div class=\"wp-block-getwid-section__foreground\"><\/div><\/div><div class=\"wp-block-getwid-section__content\"><div class=\"wp-block-getwid-section__inner-content\">\n<ul class=\"wp-block-list\">\n<li style=\"padding-top:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20)\">Placa ESP32 STEAMakers<\/li>\n\n\n\n<li style=\"padding-top:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20)\">Microservo<\/li>\n\n\n\n<li style=\"padding-top:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20)\">Sensor d&#8217;infrarrojos<\/li>\n\n\n\n<li style=\"padding-top:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20)\">Bola<\/li>\n\n\n\n<li style=\"padding-top:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20)\">Material per construir la rampa<\/li>\n\n\n\n<li style=\"padding-top:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20)\">Tauleta o tel\u00e8fon m\u00f2bil<\/li>\n<\/ul>\n<\/div><\/div><\/div><\/div><\/div>\n\n\n\n<div style=\"height:2px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h5 class=\"wp-block-heading has-pale-cyan-blue-background-color has-background\" style=\"margin-top:0;margin-bottom:0;padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--30)\"><strong>Orientacions pedag\u00f2giques<\/strong><\/h5>\n\n\n\n<p class=\"has-ast-global-color-5-background-color has-background\" style=\"margin-top:var(--wp--preset--spacing--20);margin-bottom:var(--wp--preset--spacing--20);padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--30)\">Inicialment, el docent hauria d&#8217;explicar l&#8217;activitat i mostrar les f\u00f3rmules utilitzades. Concretament, la proporcionalitat entre el quadrat del temps i l&#8217;invers de l&#8217;altura: t\u00b2=2 l\u00b2(1+k)\/(g h), on k \u00e9s un factor que dep\u00e8n de la <a href=\"http:\/\/www.sc.ehu.es\/sbweb\/fisica3\/solido\/rodar_2\/inclinado.html\">forma rodant<\/a> (en el cas d&#8217;una esfera, k=2\/5).<br>Cada alumne, individualment, ha de fer els programes necessaris amb App Inventor i ArduinoBlocks.<br>Les proves amb les plaques i els sensors es fan en grup (en funci\u00f3 del nombre de plaques, servomotors i sensors d\u2019infraroigs disponibles).<br>Abans de fer les mesures \u201cdefinitives\u201d, cada grup ha de comprovar que tot funciona correctament segons el procediment descrit en el \u201cPas a pas\u201d (simulant l\u2019arribada de la bola a la base acostant la m\u00e0 al sensor). La prova es pot considerar exitosa quan s\u2019han afegit, almenys, dos punts al diagrama.<br>El primer grup que completi exitosament la prova fixa el servomotor i el sensor d\u2019infraroigs al llist\u00f3 i duu a terme les mesures necess\u00e0ries. A continuaci\u00f3 ho fan la resta de grups, substituint la placa per la seva per\u00f2 aprofitant la resta del muntatge.<\/p>\n\n\n\n<div style=\"margin-top:var(--wp--preset--spacing--30);margin-bottom:var(--wp--preset--spacing--30);height:2px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div style=\"margin-top:var(--wp--preset--spacing--30);margin-bottom:var(--wp--preset--spacing--30);height:2px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h5 class=\"wp-block-heading has-pale-cyan-blue-background-color has-background\" style=\"margin-top:0;margin-bottom:0;padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--30)\"><strong>Elements de programaci\u00f3<\/strong><\/h5>\n\n\n\n<div class=\"wp-block-columns has-ast-global-color-5-background-color has-background is-layout-flex wp-container-core-columns-is-layout-7 wp-block-columns-is-layout-flex\" style=\"margin-top:var(--wp--preset--spacing--20);margin-bottom:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--30)\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--20)\"><li>Seq\u00fc\u00e8ncies b\u00e0siques<\/li><\/p>\n\n\n\n<p style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding-top:0;padding-right:var(--wp--preset--spacing--20);padding-bottom:0;padding-left:var(--wp--preset--spacing--20)\"><li>Esdeveniments<\/li><\/p>\n\n\n\n<p style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding-top:0;padding-right:var(--wp--preset--spacing--20);padding-bottom:0;padding-left:var(--wp--preset--spacing--20)\"><li>Bucles<\/li><\/p>\n\n\n\n<p style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding-top:0;padding-right:var(--wp--preset--spacing--20);padding-bottom:0;padding-left:var(--wp--preset--spacing--20)\"><li>Condicionals<\/li><\/p>\n\n\n\n<p style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding-top:0;padding-right:var(--wp--preset--spacing--20);padding-bottom:0;padding-left:var(--wp--preset--spacing--20)\"><li>Operadors<\/li><\/p>\n\n\n\n<p style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding-top:0;padding-right:var(--wp--preset--spacing--20);padding-bottom:0;padding-left:var(--wp--preset--spacing--20)\"><li>Variables<\/li><\/p>\n\n\n\n<p style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding-top:0;padding-right:var(--wp--preset--spacing--20);padding-bottom:0;padding-left:var(--wp--preset--spacing--20)\"><\/p>\n\n\n\n<div style=\"height:5px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p style=\"margin-top:var(--wp--preset--spacing--20);margin-right:0;margin-bottom:var(--wp--preset--spacing--20);margin-left:0\"><\/p>\n\n\n\n<p style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0\"><\/p>\n\n\n\n<p style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0\"><li>Programaci\u00f3 per blocs textuals (verticals)<\/li><\/p>\n\n\n\n<p style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0\"><\/p>\n<\/div>\n<\/div>\n\n\n\n<div style=\"margin-top:var(--wp--preset--spacing--30);margin-bottom:var(--wp--preset--spacing--30);height:2px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h5 class=\"wp-block-heading has-pale-cyan-blue-background-color has-background\" style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--30)\"><strong>Eix | \u00c0rea | Mat\u00e8ria<\/strong><\/h5>\n\n\n\n<p class=\"has-ast-global-color-5-background-color has-background\" style=\"margin-top:var(--wp--preset--spacing--20);margin-bottom:var(--wp--preset--spacing--20);padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--30)\">SEC &#8211; F\u00edsica i Qu\u00edmica | Matem\u00e0tiques<\/p>\n\n\n\n<div style=\"margin-top:var(--wp--preset--spacing--30);margin-bottom:var(--wp--preset--spacing--30);height:2px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h5 class=\"wp-block-heading has-pale-cyan-blue-background-color has-background\" style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--30)\"><strong>Compet\u00e8ncies espec\u00edfiques<\/strong><\/h5>\n\n\n\n<p class=\"has-ast-global-color-5-background-color has-background\" style=\"margin-top:var(--wp--preset--spacing--20);margin-right:0;margin-bottom:var(--wp--preset--spacing--20);margin-left:0;padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--30)\"><strong>FQ CE04<\/strong> &#8211; Utilitzar de forma cr\u00edtica i eficient plataformes tecnol\u00f2giques i recursos variats, tant per al treball individual com en equip, per a la cerca d\u2019informaci\u00f3, la creaci\u00f3 de materials i la comunicaci\u00f3 fonamentada en coneixements de la f\u00edsica i la qu\u00edmica, entorn de fen\u00f2mens i q\u00fcestions ecosocialment rellevants || <strong>MA CE06 <\/strong>&#8211; Vincular i contextualitzar les matem\u00e0tiques amb altres \u00e0rees de coneixement, interrelacionant conceptes i procediments, per resoldre problemes i desenvolupar la capacitat cr\u00edtica, creativa i innovadora en situacions diverses.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<div style=\"margin-top:var(--wp--preset--spacing--30);margin-bottom:var(--wp--preset--spacing--30);height:2px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h5 class=\"wp-block-heading has-pale-cyan-blue-background-color has-background has-medium-font-size\" style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--30)\"><strong>Sabers<\/strong><\/h5>\n\n\n\n<p class=\"has-ast-global-color-5-background-color has-background\" style=\"margin-top:var(--wp--preset--spacing--20);margin-right:0;margin-bottom:var(--wp--preset--spacing--20);margin-left:0;padding-top:var(--wp--preset--spacing--20);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--20);padding-left:var(--wp--preset--spacing--30)\">Utilitzaci\u00f3 de metodologies pr\u00f2pies de la investigaci\u00f3 cient\u00edfica per a la identificaci\u00f3 i la formulaci\u00f3 de q\u00fcestions, l\u2019elaboraci\u00f3 d\u2019hip\u00f2tesis i el seu contrast experimental.<\/p>\n\n\n\n<p style=\"text-align: right;\">\n    <img decoding=\"async\" style=\"height:22px!important;margin-left:3px;vertical-align:text-bottom;\" src=\"https:\/\/mirrors.creativecommons.org\/presskit\/icons\/cc.svg?ref=chooser-v1\" alt=\"\">\n    <img decoding=\"async\" style=\"height:22px!important;margin-left:3px;vertical-align:text-bottom;\" src=\"https:\/\/mirrors.creativecommons.org\/presskit\/icons\/by.svg?ref=chooser-v1\" alt=\"\">\n    <img decoding=\"async\" style=\"height:22px!important;margin-left:3px;vertical-align:text-bottom;\" src=\"https:\/\/mirrors.creativecommons.org\/presskit\/icons\/nc.svg?ref=chooser-v1\" alt=\"\">\n    <img decoding=\"async\" style=\"height:22px!important;margin-left:3px;vertical-align:text-bottom;\" src=\"https:\/\/mirrors.creativecommons.org\/presskit\/icons\/sa.svg?ref=chooser-v1\" alt=\"\">\n<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-getwid-tabs__nav-link\"><span class=\"wp-block-getwid-tabs__title-wrapper\"><a href=\"#\"><span class=\"wp-block-getwid-tabs__title\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-1-color\"><strong>Pas a pas<\/strong><\/mark><\/span><\/a><\/span><\/div><div class=\"wp-block-getwid-tabs__tab-content-wrapper\"><div class=\"wp-block-getwid-tabs__tab-content\">\n<p class=\"has-ast-global-color-5-background-color has-background\" style=\"padding-right:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--30)\"><b>1. <\/b>Creeu un programa nou amb ArduinoBlocks del tipus ESP32 STEAMakers i programeu el funcionament de la placa. La seva funci\u00f3 \u00e9s alliberar la bola quan rebi l&#8217;ordre des de l&#8217;app, detectar l&#8217;arribada de la bola al final de la rampa i informar-ho a l&#8217;app:<br>1.1. En la inicialitzaci\u00f3, definiu una variable (detectant) per establir l&#8217;estat de la placa i inicieu la funcionalitat Bluetooth.<br>1.2. En el bucle principal, comproveu si s&#8217;han rebut dades per Bluetooth. Aix\u00f2 es produir\u00e0 en el llan\u00e7ament de la bola i l\u2019eix del microservo bascular\u00e0 per alliberar la bola. La placa passar\u00e0 a l&#8217;estat de detecci\u00f3.<br>1.3. Tamb\u00e9 en el bucle, en l&#8217;estat de detecci\u00f3, envieu un &#8220;0&#8221; a l&#8217;app i desactiveu la detecci\u00f3 si el sensor detecta que la bola ha arribat al final de la rampa.<br><a href=\"https:\/\/edumet.cat\/areatac\/robotica\/get.php?id=1BALX0BkI61GmHdA611lAW45gPK5o50CC\" target=\"_blank\" rel=\"noopener\"><\/a>1.4. Transferiu el programa a la placa.<img decoding=\"async\" style=\"display:block;margin:0 auto;margin-top:20px;max-width:500px;max-height:500px\" src=\"https:\/\/edumet.cat\/areatac\/robotica\/get.php?id=1BALX0BkI61GmHdA611lAW45gPK5o50CC\" alt=\"ArduinoBlocks\"><br><b>2. <\/b>En l&#8217;entorn de programaci\u00f3 d&#8217;App Iventor, dissenyeu l\u2019app de control de la placa i de visualitzaci\u00f3 de les dades mesurades. Situeu-hi els seg\u00fcents components:<br>&#8211; 2 botons, un per connectar i un per desconnectar via Bluetooth amb la placa. Situeu-los en un contenidor horitzontal.<br>&#8211; Dues caselles de text (una per escriure la llargada de la rampa i una per a l&#8217;altura del llan\u00e7ament) i les etiquetes corresponents en un contenidor horitzontal.<br>&#8211; Un bot\u00f3 per fer el llan\u00e7ament de la bola.<br>&#8211; Una gr\u00e0fica amb una l\u00ednia de tend\u00e8ncia.<br>&#8211; Una etiqueta per mostrar el temps mesurat.<br>&#8211; Els components no-visibles: un client Bluetooth, un rellotge (que fa de cron\u00f2metre) i un notificador.<a href=\"https:\/\/edumet.cat\/areatac\/robotica\/get.php?id=11z9WX3QqnifVd24YotFJ0_vAZECFADt4\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" style=\"display:block;margin:0 auto;margin-top:20px;max-width:500px;max-height:500px\" src=\"https:\/\/edumet.cat\/areatac\/robotica\/get.php?id=11z9WX3QqnifVd24YotFJ0_vAZECFADt4\" alt=\"Disseny de l'app\"><\/a><br><b>3. <\/b>A la secci\u00f3 de blocs, programeu la connexi\u00f3 i la comunicaci\u00f3 amb la placa mitjan\u00e7ant Bluetooth. Afegiu blocs per a:<br>&#8211; Definir variables: una per establir l&#8217;estat de detecci\u00f3 i una que permetr\u00e0 establir el temps que ha trigat la bola en aribar al final de la rampa (multiplicant el nombre d&#8217;intervals de rellotge per la durada de cada interval).<br>&#8211; Demanar perm\u00eds a l&#8217;usuari per fer servir la funcionalitat Bluetooth del m\u00f2bil.<br>&#8211; Mostrar els dispositius Bluetooth propers quan es prem el bot\u00f3 de connexi\u00f3 i permetre seleccionar la placa.<br>&#8211; Connectar amb la placa i habilitar el rellotge.<a href=\"https:\/\/edumet.cat\/areatac\/robotica\/get.php?id=1NNW5nzSvbC5bi-aDxDGXqLS1jWaL6J1H\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" style=\"display:block;margin:0 auto;margin-top:20px;max-width:500px;max-height:500px\" src=\"https:\/\/edumet.cat\/areatac\/robotica\/get.php?id=1NNW5nzSvbC5bi-aDxDGXqLS1jWaL6J1H\" alt=\"Bluetooth\"><\/a><br><b>4. <\/b>Programeu el bot\u00f3 per alliberar la bola. Quan es prem el bot\u00f3 de llan\u00e7ament, s&#8217;envia un byte (1) a la placa.<a href=\"https:\/\/edumet.cat\/areatac\/robotica\/get.php?id=1d1IpjNi-J-cvlNQARdWQWvQ45835g3zA\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" style=\"display:block;margin:0 auto;margin-top:20px;max-width:500px;max-height:500px\" src=\"https:\/\/edumet.cat\/areatac\/robotica\/get.php?id=1d1IpjNi-J-cvlNQARdWQWvQ45835g3zA\" alt=\"Llan\u00e7ament de la bola\"><\/a><br><b>5. <\/b>Programeu el temporitzador (el que passa quan ha transcorregut l&#8217;interval de temps del rellotge):<br>&#8211; Incrementeu en 1 el nombre d&#8217;intervals.<br>&#8211; Comproveu si s&#8217;ha rebut informaci\u00f3 de la detecci\u00f3 de la bola per part de la placa. En aquest cas:<br> * Definiu la variable local &#8220;segons&#8221; per emmagatzemar els segons transcorreguts des del llan\u00e7ament de la bola.<br> * Definiu la variable local &#8220;constant&#8221; per emmagatzemar el valor de la constant que caldr\u00e0 utilitzar en la determinaci\u00f3 de l&#8217;acceleraci\u00f3 de la gravetat.<br> * Feu servir el notificador per mostrar els segons que ha trigat la bola en arribar al final de la rampa.<br> * Afegiu un punt a la gr\u00e0fica on es representen les mesures efectuades.<br> * Si hi ha m\u00e9s d&#8217;un punt a la gr\u00e0fica, mostreu en l&#8217;etiqueta corresponent el valor aproximat de &#8220;g&#8221; (es determina a partir de la inclinaci\u00f3 de la l\u00ednia de tend\u00e8ncia).<br><a href=\"https:\/\/edumet.cat\/areatac\/robotica\/get.php?id=1kYPUvx75VA_NrCDg1CksXJjR2SljlTRi\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" style=\"display:block;margin:0 auto;margin-top:20px;max-width:500px;max-height:500px\" src=\"https:\/\/edumet.cat\/areatac\/robotica\/get.php?id=1kYPUvx75VA_NrCDg1CksXJjR2SljlTRi\" alt=\"Temporitzador\"><\/a><br><b>6. <\/b>Situeu i fixeu el microservo que alliberar\u00e0 la bola a l\u2019extrem superior del pla inclinat i el sensor d\u2019infraroigs que detectar\u00e0 l\u2019arribada de la bola a la base del pla.<br><b><br>7. <\/b>Connecteu el microservo (micro servo 9G) i el sensor d\u2019infraroigs (seguidor de l\u00ednia KS0050) a la placa ESP32 STEAMakers en els pins 14(D7) i 27(D6) respectivament:<a href=\"https:\/\/edumet.cat\/areatac\/robotica\/get.php?id=1ijnizUGceAXpNewSqtgiAcRz0lA_92d8\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" style=\"display:block;margin:0 auto;margin-top:20px;max-width:500px;max-height:500px\" src=\"https:\/\/edumet.cat\/areatac\/robotica\/get.php?id=1ijnizUGceAXpNewSqtgiAcRz0lA_92d8\" alt=\"Connnexions\"><\/a><br><b>8. <\/b>Emparelleu (vinculeu) la placa amb el m\u00f2bil, per tal que despr\u00e9s aparegui com a disponible en l&#8217;escaneig de dispositius Bluetooth.<br><b><br>9. <\/b>Instal\u00b7leu en el m\u00f2bil o la tauleta l\u2019app Companion i connecteu-la amb l\u2019entorn d\u2019App Inventor.<br><b><br>10. <\/b>Constru\u00efu un \u00fanic \u201cpla inclinat\u201d amb un llist\u00f3 o regle prou llarg (aproximadament d\u2019un metre de longitud) de metall o de pl\u00e0stic, de forma que la bola pugui baixar pel llist\u00f3 rodant sense lliscament i sense fregament addicional. El llist\u00f3 ha de tenir una ranura longitudinal o b\u00e9 l\u00edmits laterals per impedir que la bola caigui pels costats. L&#8217;angle amb l&#8217;horitzontal ha de ser petit per impedir lliscaments (inferior a 30\u00b0 aproximadament).<a href=\"https:\/\/edumet.cat\/areatac\/robotica\/get.php?id=1WdYHW0u6g2ZhRZXYUkms6MquDMpxlVXn\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" style=\"display:block;margin:0 auto;margin-top:20px;max-width:500px;max-height:500px\" src=\"https:\/\/edumet.cat\/areatac\/robotica\/get.php?id=1WdYHW0u6g2ZhRZXYUkms6MquDMpxlVXn\" alt=\"Pla inclinat\"><\/a><br><b>11. <\/b>Mesureu la llargada del pla inclinat i escriviu el seu valor en mm en l\u2019app.<br><b><br>12. <\/b>Preneu diverses mesures, variant l\u2019altura de l\u2019extrem superior del pla. En cada mesura:<br>12.1. Mesureu l\u2019altura en mm i escriviu-la en l\u2019app.<br>12.2. Situeu la bola a la part superior del pla inclinat.<br>12.3. Toqueu el bot\u00f3 \u201cLLEN\u00c7A!\u201d. L\u2019eix del servomotor bascular\u00e0 per alliberar la bola i, al cap d\u2019uns segons, la bola ser\u00e0 detectada pel sensor d\u2019infraroigs en la base del pla.<br><b><br>13. <\/b>Els valors mesurats s\u00f3n recollits per l\u2019app i mostrats en el diagrama. A partir de la segona mesura es mostra la recta de m\u00e0xim ajust, el pendent de la qual serveix per determinar el valor de l\u2019acceleraci\u00f3 de la gravetat.<br><b><br>14. <\/b>Si el valor d\u2019acceleraci\u00f3 obtingut no \u00e9s l\u2019esperat (aproximadament 9,8 m\/s\u00b2), feu les correccions necess\u00e0ries en el programa d\u2019App Inventor per considerar els retards originats en l\u2019alliberament de la bola i en la comunicaci\u00f3 entre m\u00f2bil i placa.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-getwid-tabs__nav-link\"><span class=\"wp-block-getwid-tabs__title-wrapper\"><a href=\"#\"><span class=\"wp-block-getwid-tabs__title\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-1-color\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-1-color\"><strong>Desc\u00e0rregues i fitxa t\u00e8cnica<\/strong><\/mark><\/mark><\/span><\/a><\/span><\/div><div class=\"wp-block-getwid-tabs__tab-content-wrapper\"><div class=\"wp-block-getwid-tabs__tab-content\">\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/drive.google.com\/file\/d\/1Ywv7fP8eSsO6aA6sz_BweDNxQbFje-O7\/view?usp=drive_link\" target=\"_blank\" rel=\"noreferrer noopener\">Programa sencer d&#8217;ArduinoBlocks<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/drive.google.com\/file\/d\/1Q5MITrgl4Ft-fU1GtVAnb2HF4-BQQUyf\/view?usp=drive_link\" target=\"_blank\" rel=\"noreferrer noopener\">Programa sencer d&#8217;App Inventor<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/projectes.xtec.cat\/digital\/equipaments-i-infraestructures\/robotica\/formacio-tecnica-robotica\/plaques-microcontroladores\/esp32-steamakers\/\" target=\"_blank\" rel=\"noreferrer noopener\">Fitxa t\u00e8cnica de la placa ESP32 STEAMakers<\/a><\/li>\n<\/ul>\n<\/div><\/div>\n<\/div>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>En aquesta activitat calcularem l&#8217;acceleraci\u00f3 de la gravetat a partir de la mesura del temps que triga una bola a baixar rodolant per un pla amb inclinaci\u00f3 variable. <\/p>\n","protected":false},"featured_media":33359,"template":"","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":"default","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":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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