{"id":5103,"date":"2020-05-08T20:00:20","date_gmt":"2020-05-08T20:00:20","guid":{"rendered":"https:\/\/ct1jqj.eu\/blog\/?p=5103"},"modified":"2020-05-08T20:00:20","modified_gmt":"2020-05-08T20:00:20","slug":"selector-de-entradas-com-arduino-pt-2","status":"publish","type":"post","link":"https:\/\/ct1jqj.eu\/?p=5103","title":{"rendered":"Selector de entradas com Arduino (Pt. 2)"},"content":{"rendered":"<div class=\"pld-like-dislike-wrap pld-template-4\">\r\n    <div class=\"pld-like-wrap  pld-common-wrap\">\r\n    <a href=\"javascript:void(0)\" class=\"pld-like-trigger pld-like-dislike-trigger  \" title=\"\" data-post-id=\"5103\" data-trigger-type=\"like\" data-restriction=\"cookie\" data-already-liked=\"0\">\r\n                        <i class=\"far fa-smile\"><\/i>\r\n                    <\/a>\r\n    <span class=\"pld-like-count-wrap pld-count-wrap\">    <\/span>\r\n<\/div><div class=\"pld-dislike-wrap  pld-common-wrap\">\r\n    <a href=\"javascript:void(0)\" class=\"pld-dislike-trigger pld-like-dislike-trigger  \" title=\"\" data-post-id=\"5103\" data-trigger-type=\"dislike\" data-restriction=\"cookie\" data-already-liked=\"0\">\r\n                        <i class=\"far fa-frown\"><\/i>\r\n                    <\/a>\r\n    <span class=\"pld-dislike-count-wrap pld-count-wrap\"><\/span>\r\n<\/div><\/div><p style=\"text-align: justify;\">Ap\u00f3s ter &#8220;refinado&#8221; um pouco mais o c\u00f3digo base, actualmente este selector, al\u00e9m de seleccionar 1 entre 8 entradas audio (Pode ser adaptado para mais ou menos, consoante a necessidade!), permite ter al\u00e9m da sa\u00edda de linha para ligar a um amplificador, 3 sa\u00eddas de grava\u00e7\u00e3o, que podem ser seleccionadas independentemente da sa\u00edda de linha, por exemplo, para gravar uma cassete enquanto se escuta um CD&#8230; O c\u00f3digo continua simples, e ainda em aberto para ser modificado\/adaptado para outras fun\u00e7\u00f5es. J\u00e1 desenhei um esquema que me serviu de base para desenhar a PCB de controlo, e que consegui &#8220;compactar&#8221; para ficar atr\u00e1s do display LCD, as placas de rel\u00e9s de entrada\/sa\u00edda, ainda estou a ver se irei efectuar o desenho por m\u00f3dulos, para ser f\u00e1cil expandir ou adaptar o numero de entradas \u00e0 necessidade, ou se ficar\u00e1 um m\u00f3dulo \u00fanico, que incluir\u00e1 tamb\u00e9m as op\u00e7\u00f5es de sa\u00edda de grava\u00e7\u00e3o.<\/p>\n<p style=\"text-align: justify;\">O esquema, apesar de confuso, \u00e9 simples de interpretar, as sa\u00eddas em BCD comandam respectivamente um CD4051, que \u00e9 um MUX\/DEMUX(\u00b9) 8-1 e um CD4052, que \u00e9 um duplo MUX\/DEMUX(\u00b9) duplo 4-1. Em seguida as sa\u00eddas s\u00e3o ligadas a dois buffer ULN2003, para poderem atracar os rel\u00e9s respectivos. Deixo um esbo\u00e7o do esquema e uma vista 3D da placa de controlo. (Esquema final s\u00f3 daqui a uns dias, quando tiver tudo testado, at\u00e9 l\u00e1, posso-me lembrar de incluir novas fun\u00e7\u00f5es!)<\/p>\n\n\t\t<style>\n\t\t\t#gallery-1 {\n\t\t\t\tmargin: auto;\n\t\t\t}\n\t\t\t#gallery-1 .gallery-item {\n\t\t\t\tfloat: left;\n\t\t\t\tmargin-top: 10px;\n\t\t\t\ttext-align: center;\n\t\t\t\twidth: 33%;\n\t\t\t}\n\t\t\t#gallery-1 img {\n\t\t\t\tborder: 2px solid #cfcfcf;\n\t\t\t}\n\t\t\t#gallery-1 .gallery-caption {\n\t\t\t\tmargin-left: 0;\n\t\t\t}\n\t\t\t\/* see gallery_shortcode() in wp-includes\/media.php *\/\n\t\t<\/style>\n\t\t<div id='gallery-1' class='gallery galleryid-5103 gallery-columns-3 gallery-size-thumbnail'><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/ct1jqj.eu\/?attachment_id=5101'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/ct1jqj.eu\/wp-content\/uploads\/2020\/05\/esquema-1-150x150.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" \/><\/a>\n\t\t\t<\/dt><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/ct1jqj.eu\/?attachment_id=5102'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/ct1jqj.eu\/wp-content\/uploads\/2020\/05\/selector_3d_back-1-150x150.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" \/><\/a>\n\t\t\t<\/dt><\/dl>\n\t\t\t<br style='clear: both' \/>\n\t\t<\/div>\n\n<p style=\"text-align: justify;\">(\u00b9) Multiplexer\/Demultiplexer &#8211; Multiplexador\/desmultiplexador, permite oito (quatro no caso do 4052) entradas e uma (duas no caso do 4052) sa\u00edda(s), ou uma (duas) sa\u00edda(s) e oito (quatro) entradas.<\/p>\n<p><em>As always, thanks for watching!<\/em><\/p>\n<p>73&#8217;s<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ap\u00f3s ter &#8220;refinado&#8221; um pouco mais o c\u00f3digo base, actualmente este selector, al\u00e9m de seleccionar 1 entre 8 entradas audio (Pode ser adaptado para mais ou menos, consoante a necessidade!), permite ter al\u00e9m da sa\u00edda de linha para ligar a um amplificador, 3 sa\u00eddas de grava\u00e7\u00e3o, que podem ser seleccionadas independentemente da sa\u00edda de linha, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4346,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,5,9],"tags":[78,113,114],"class_list":["post-5103","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-audio","category-electronica","category-ideias-para-projecto","tag-arduino-nano","tag-cd4051","tag-cd4052"],"_links":{"self":[{"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=\/wp\/v2\/posts\/5103","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5103"}],"version-history":[{"count":0,"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=\/wp\/v2\/posts\/5103\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=\/wp\/v2\/media\/4346"}],"wp:attachment":[{"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5103"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5103"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5103"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}