{"id":28908,"date":"2026-05-12T15:48:52","date_gmt":"2026-05-12T15:48:52","guid":{"rendered":"https:\/\/retotech.fundacionendesa.org\/multisite\/?p=28908"},"modified":"2026-05-12T16:44:41","modified_gmt":"2026-05-12T16:44:41","slug":"2-apartat-mecanica","status":"publish","type":"post","link":"https:\/\/retotech.fundacionendesa.org\/multisite\/2026\/05\/12\/2-apartat-mecanica\/","title":{"rendered":"PROJECTE TASU &#8211; 2. Mec\u00e0nica"},"content":{"rendered":"\n<p><\/p>\n\n\n\n<p>La torreta \u00e9s molt simple de construir:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Estructura recomanada<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Base de fusta o impressi\u00f3 3D.<\/li>\n\n\n\n<li>Servo SG90 o MG90S fixat a la base.<\/li>\n\n\n\n<li>Suport vertical per als sensors HC-SR04.<\/li>\n\n\n\n<li>Sensors muntats sobre un petit bra\u00e7 connectat al servo. S\u2019han de separar una dist\u00e0ncia d\u2019entre\u00a0 8 i 12 cm, i orientats amb un angle de 30\u00b0- 45\u00b0.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Ajustar angles i calibrar<\/strong><\/h3>\n\n\n\n<p>Cada muntatge f\u00edsic \u00e9s diferent, de manera que cal ajustar els angles associats a cada sensor. Caldr\u00e0, doncs, portar a terme les operacions seg\u00fcents:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Modificar lels angles esquerre i dret segons la posici\u00f3 real.<\/li>\n\n\n\n<li>Ajustar el llindar de dist\u00e0ncia si cal.<\/li>\n\n\n\n<li>Provar amb objectes a diferents posicions.<\/li>\n<\/ul>\n\n\n\n<p>Un <strong>esquema t\u00e8cnic amb mesures aproximades<\/strong> i posicions clares dels components principals de la torreta. S\u2019hi indiquen:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Amplada del sensor HC-SR04<\/strong> (40 mm)<\/li>\n\n\n\n<li><strong>Al\u00e7ada del suport vertical<\/strong> (40 mm)<\/li>\n\n\n\n<li><strong>Di\u00e0metre de la base circular<\/strong> (100 mm)<\/li>\n\n\n\n<li><strong>Posici\u00f3 del servo i del sensor<\/strong><\/li>\n\n\n\n<li><strong>Arc de gir de 180\u00b0<\/strong><\/li>\n<\/ul>\n\n\n\n<p>Aquest tipus d\u2019esquema \u00e9s ideal per preparar el muntatge f\u00edsic amb precisi\u00f3 i planificar el tall de peces si es fa amb fusta o impressi\u00f3 3D.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Punts cr\u00edtics<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>El sensor ha d\u2019estar <strong>ben alineat<\/strong> amb l\u2019eix del servo.<\/li>\n\n\n\n<li>El cablejat ha de quedar <strong>lliure<\/strong> perqu\u00e8 el servo pugui girar sense enganxar-se.<\/li>\n\n\n\n<li>Si vols m\u00e9s estabilitat, afegeix:\n<ul class=\"wp-block-list\">\n<li>contrapesos,<\/li>\n\n\n\n<li>una base m\u00e9s ampla,<\/li>\n\n\n\n<li>un suport de 3D printing.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p><strong>Esquema mec\u00e0nic general<\/strong> de la torreta (vista explodida amb servo, suport i sensor).<\/p>\n\n\n\n<p><strong>Foto realista<\/strong> d\u2019una torreta muntada sobre una base.<\/p>\n\n\n\n<p><strong>Vista lateral<\/strong> del muntatge amb servo i sensor HC\u2011SR04.<\/p>\n\n\n\n<p><strong>Vista superior<\/strong> mostrant l\u2019arc de gir del servo.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La torreta \u00e9s molt simple de construir: Estructura recomanada Ajustar angles i calibrar Cada muntatge f\u00edsic \u00e9s diferent, de manera<\/p>\n","protected":false},"author":6283,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-28908","post","type-post","status-publish","format-standard","hentry","category-blog-retotech"],"_links":{"self":[{"href":"https:\/\/retotech.fundacionendesa.org\/multisite\/wp-json\/wp\/v2\/posts\/28908"}],"collection":[{"href":"https:\/\/retotech.fundacionendesa.org\/multisite\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/retotech.fundacionendesa.org\/multisite\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/retotech.fundacionendesa.org\/multisite\/wp-json\/wp\/v2\/users\/6283"}],"replies":[{"embeddable":true,"href":"https:\/\/retotech.fundacionendesa.org\/multisite\/wp-json\/wp\/v2\/comments?post=28908"}],"version-history":[{"count":3,"href":"https:\/\/retotech.fundacionendesa.org\/multisite\/wp-json\/wp\/v2\/posts\/28908\/revisions"}],"predecessor-version":[{"id":28982,"href":"https:\/\/retotech.fundacionendesa.org\/multisite\/wp-json\/wp\/v2\/posts\/28908\/revisions\/28982"}],"wp:attachment":[{"href":"https:\/\/retotech.fundacionendesa.org\/multisite\/wp-json\/wp\/v2\/media?parent=28908"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/retotech.fundacionendesa.org\/multisite\/wp-json\/wp\/v2\/categories?post=28908"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/retotech.fundacionendesa.org\/multisite\/wp-json\/wp\/v2\/tags?post=28908"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}