{"id":507,"date":"2020-03-16T15:20:45","date_gmt":"2020-03-16T14:20:45","guid":{"rendered":"http:\/\/asso.unilim.fr\/fablab19\/?p=507"},"modified":"2020-04-01T11:04:14","modified_gmt":"2020-04-01T09:04:14","slug":"levitation-au-moyen-dultrasons","status":"publish","type":"post","link":"https:\/\/asso.unilim.fr\/fablab19\/2020\/03\/16\/levitation-au-moyen-dultrasons\/","title":{"rendered":"L\u00e9vitation au moyen d&rsquo;ultrasons"},"content":{"rendered":"<figure id=\"attachment_519\" aria-describedby=\"caption-attachment-519\" style=\"width: 357px\" class=\"wp-caption alignright\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-519\" src=\"https:\/\/www.unilim.fr\/fablab19\/wp-content\/uploads\/sites\/8\/2020\/03\/Support_levitation.png\" alt=\"\" width=\"357\" height=\"248\" srcset=\"https:\/\/www.unilim.fr\/fablab19\/wp-content\/uploads\/sites\/8\/2020\/03\/Support_levitation.png 807w, https:\/\/www.unilim.fr\/fablab19\/wp-content\/uploads\/sites\/8\/2020\/03\/Support_levitation-300x208.png 300w, https:\/\/www.unilim.fr\/fablab19\/wp-content\/uploads\/sites\/8\/2020\/03\/Support_levitation-768x533.png 768w\" sizes=\"auto, (max-width: 357px) 100vw, 357px\" \/><figcaption id=\"caption-attachment-519\" class=\"wp-caption-text\">Support r\u00e9alis\u00e9 en impression 3D et con\u00e7u avec freecad 0.16<\/figcaption><\/figure>\n<p>Cette exp\u00e9rience int\u00e9ressante est relativement ais\u00e9e \u00e0 mettre en \u0153uvre, elle est inspir\u00e9e d&rsquo;un article de Make: N\u00b0 65 de novembre 2018.<\/p>\n<p>Elle utilise deux modules ultrason fonctionnant \u00e0 40khz. Les deux transducteurs sont command\u00e9s\u00a0 au moyen d&rsquo;un L293 pilot\u00e9 par deux signaux TTL en opposition de phase. Pour les signaux TTL nous avons utilis\u00e9 un simple g\u00e9n\u00e9rateur de fonctions et un inverseur.<\/p>\n<p>&nbsp;<\/p>\n<p>..<\/p>\n<p>..<\/p>\n<p>&nbsp;<\/p>\n<hr \/>\n\r\n\t<!-- Begin Video.js -->\r\n\t<video id=\"example_video_id_513109552\" class=\"video-js vjs-default-skin\" width=\"600\" height=\"400\" controls preload=\"none\" data-setup='[]'>\r\n\t\t<source src=\"https:\/\/www.unilim.fr\/fablab19\/wp-content\/uploads\/sites\/8\/2020\/03\/ultrason_V2.mp4\" type='video\/mp4' \/>\r\n\t\t\r\n\t\t\r\n\t<\/video>\r\n\t<!-- End Video.js -->\r\n\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Cette exp\u00e9rience int\u00e9ressante est relativement ais\u00e9e \u00e0 mettre en \u0153uvre, elle est inspir\u00e9e d&rsquo;un article de Make: N\u00b0 65 de novembre 2018. Elle utilise deux modules ultrason fonctionnant \u00e0 40khz. Les deux transducteurs sont command\u00e9s\u00a0 au moyen d&rsquo;un L293 pilot\u00e9 par deux signaux TTL en opposition de phase. Pour les signaux TTL nous avons utilis\u00e9 [&hellip;]<\/p>\n","protected":false},"author":89,"featured_media":521,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,16],"tags":[],"class_list":["post-507","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualite","category-realisations"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>L\u00e9vitation de billes - FABLAB19<\/title>\n<meta name=\"description\" content=\"Utilisation des ultrasons pour faire l\u00e9viter des billes de polystyr\u00e8ne. 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