{"id":79,"date":"2014-10-17T17:26:51","date_gmt":"2014-10-17T15:26:51","guid":{"rendered":"http:\/\/atwrk.phae.eu\/?p=79"},"modified":"2014-12-03T04:03:05","modified_gmt":"2014-12-03T02:03:05","slug":"switches-interface-audio-brute","status":"publish","type":"post","link":"https:\/\/atwrk.phae.eu\/?p=79","title":{"rendered":"sWITCHES &#8211; interface audio brute"},"content":{"rendered":"<p><!--more--><\/p>\n<p>4 canaux avec<\/p>\n<ul>\n<li>un contacteur brut<\/li>\n<li>un relai<\/li>\n<li>un \u00ab\u00a0vactrol\u00a0\u00bb<\/li>\n<\/ul>\n<p>Le \u00ab\u00a0contacteur brut\u00a0\u00bb est la partie gestuelle : un ensemble de deux \u00ab\u00a0pad\u00a0\u00bb d&rsquo;aluminium qui correspondent au deux p\u00f4les d&rsquo;un interrupteur sur la partie signal. Cela permet de faire interrupteur en reliant les deux parties avec un mat\u00e9riau conducteur (pi\u00e8ce m\u00e9tallique), de faire r\u00e9sistance avec le corps\/les doigts, ou m\u00eame faire antenne en ne touchant qu&rsquo;un des deux p\u00f4les.<br \/>\nCela permet \u00e9galement de relier assez brutalement les canaux entre eux.<\/p>\n<p>Le relai est un b\u00eate t\u00e9l\u00e9rupteur de coupure m\u00e9canique, avec une commande \u00ab\u00a0ouvert\u00a0\u00bb et une commande \u00ab\u00a0ferm\u00e9\u00a0\u00bb.<\/p>\n<p>Le \u00ab\u00a0vactrol\u00a0\u00bb est un ensemble LED-LDR (photor\u00e9sistance). Le signal audio traverse la photor\u00e9sistance, dont la valeur est modul\u00e9e par la LED, via un PWM.<\/p>\n<p>L&rsquo;interface est contr\u00f4l\u00e9e par la liaison s\u00e9rie USB. Les commandes sont organis\u00e9es de la fa\u00e7on suivante :<br \/>\n&#8211; n\u00b0_relai\u00a0 |\u00a0 \u00e9tat\u00a0 [ON\/OFF]<br \/>\n&#8211; n\u00b0_vactrol\u00a0 |\u00a0 valeur [0-255]<\/p>\n<p>Les messages sont cod\u00e9s soit sur 1 ou 2 octets<\/p>\n<p><span style=\"text-decoration: underline;\">commande relai<\/span> (1 octet):<\/p>\n<pre>bits     76543210\r\noctet 1  1AAAAAAB<\/pre>\n<p>o\u00f9 A est l&rsquo;id du relai et son \u00e9tat sur 1-bit (ouvert\/ferm\u00e9)<\/p>\n<p><span style=\"text-decoration: underline;\">commande vactrol<\/span> (2 octets) :<\/p>\n<pre>bits     76543210\r\noctet 1  1AAAAAAB\r\noctet 2  0BBBBBBB<\/pre>\n<p>o\u00f9 A est l&rsquo;id du vactrol, B sa valeur sur 8 bits<\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":110,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[62],"tags":[66,68,69,33,67,70,42],"_links":{"self":[{"href":"https:\/\/atwrk.phae.eu\/index.php?rest_route=\/wp\/v2\/posts\/79"}],"collection":[{"href":"https:\/\/atwrk.phae.eu\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/atwrk.phae.eu\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/atwrk.phae.eu\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/atwrk.phae.eu\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=79"}],"version-history":[{"count":6,"href":"https:\/\/atwrk.phae.eu\/index.php?rest_route=\/wp\/v2\/posts\/79\/revisions"}],"predecessor-version":[{"id":178,"href":"https:\/\/atwrk.phae.eu\/index.php?rest_route=\/wp\/v2\/posts\/79\/revisions\/178"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/atwrk.phae.eu\/index.php?rest_route=\/wp\/v2\/media\/110"}],"wp:attachment":[{"href":"https:\/\/atwrk.phae.eu\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=79"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/atwrk.phae.eu\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=79"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/atwrk.phae.eu\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=79"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}