{"id":381,"date":"2012-11-23T17:52:42","date_gmt":"2012-11-23T17:52:42","guid":{"rendered":"http:\/\/aaron-sherwood.com\/blog\/?p=381"},"modified":"2025-09-26T09:29:00","modified_gmt":"2025-09-26T09:29:00","slug":"glockentar","status":"publish","type":"post","link":"https:\/\/aaron-sherwood.com\/blog\/?p=381","title":{"rendered":"Glockentar"},"content":{"rendered":"<p><iframe loading=\"lazy\" title=\"vimeo-player\" src=\"https:\/\/player.vimeo.com\/video\/54077198?h=bce4eea2d9\" width=\"800\" height=\"450\" frameborder=\"0\" referrerpolicy=\"strict-origin-when-cross-origin\" allow=\"autoplay; fullscreen; picture-in-picture; clipboard-write; encrypted-media; web-share\"   allowfullscreen><\/iframe><\/p>\n<p>The Glockentar\u00a0combines a glockenspiel with a guitar.<\/p>\n<p><a title=\"guitarGlockenspiel by AaronSherwood, on Flickr\" href=\"http:\/\/www.flickr.com\/photos\/asherwood\/8211834066\/\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/farm9.staticflickr.com\/8477\/8211834066_c84739a004_c.jpg\" alt=\"guitarGlockenspiel\" width=\"800\" height=\"170\" \/><\/a><br \/>\n<a title=\"Glockentar by AaronSherwood, on Flickr\" href=\"http:\/\/www.flickr.com\/photos\/asherwood\/8210567925\/\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/farm9.staticflickr.com\/8490\/8210567925_e7e08f3ee6_c.jpg\" alt=\"Glockentar\" width=\"800\" height=\"534\" \/><\/a><\/p>\n<p>Each time a string is plucked a glockenspiel bell is struck with a solenoid, and a beam of light is projected across the length of the string.<\/p>\n<p><a title=\"Glockentar by AaronSherwood, on Flickr\" href=\"http:\/\/www.flickr.com\/photos\/asherwood\/8211657296\/\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/farm9.staticflickr.com\/8062\/8211657296_2de111f0b9_c.jpg\" alt=\"Glockentar\" width=\"800\" height=\"534\" \/><\/a><\/p>\n<p><a title=\"Glockentar by AaronSherwood, on Flickr\" href=\"http:\/\/www.flickr.com\/photos\/asherwood\/8211771676\/\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/farm9.staticflickr.com\/8482\/8211771676_110a21459c_c.jpg\" alt=\"Glockentar\" width=\"800\" height=\"534\" \/><\/a><\/p>\n<p>The light follows a logarithmic\u00a0curve in terms of it&#8217;s speed as it goes up and down the string. It starts fast, pauses for a moment then goes back down the string.<\/p>\n<p><a href=\"http:\/\/aaron-sherwood.com\/blog\/wp-content\/uploads\/2012\/11\/log_graph.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-409\" title=\"log_graph\" src=\"http:\/\/aaron-sherwood.com\/blog\/wp-content\/uploads\/2012\/11\/log_graph.jpg\" alt=\"\" width=\"388\" height=\"288\" srcset=\"https:\/\/aaron-sherwood.com\/blog\/wp-content\/uploads\/2012\/11\/log_graph.jpg 388w, https:\/\/aaron-sherwood.com\/blog\/wp-content\/uploads\/2012\/11\/log_graph-300x222.jpg 300w\" sizes=\"auto, (max-width: 388px) 100vw, 388px\" \/><\/a><\/p>\n<p>The lights are essentially rectangles made in openFrameworks, then sent to MadMapper via Syphon.<\/p>\n<p><a href=\"http:\/\/aaron-sherwood.com\/blog\/wp-content\/uploads\/2012\/11\/ofGlockentar.gif\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-408\" title=\"ofGlockentar\" src=\"http:\/\/aaron-sherwood.com\/blog\/wp-content\/uploads\/2012\/11\/ofGlockentar.gif\" alt=\"\" width=\"480\" height=\"261\" srcset=\"https:\/\/aaron-sherwood.com\/blog\/wp-content\/uploads\/2012\/11\/ofGlockentar.gif 480w, https:\/\/aaron-sherwood.com\/blog\/wp-content\/uploads\/2012\/11\/ofGlockentar-300x163.gif 300w\" sizes=\"auto, (max-width: 480px) 100vw, 480px\" \/><\/a><\/p>\n<p>In MadMapper they are then mapped to the strings.<\/p>\n<p><a title=\"Glockentar by AaronSherwood, on Flickr\" href=\"http:\/\/www.flickr.com\/photos\/asherwood\/8210683577\/\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/farm9.staticflickr.com\/8059\/8210683577_c0b017a13b_c.jpg\" alt=\"Glockentar\" width=\"800\" height=\"534\" \/><\/a><\/p>\n<p>An Arduino is used to turn the strings into switches. Each string acts as a ground, and electricity is sent to the pick. When a string is plucked with the pick the switch is closed and the solenoids and projections are triggered.<\/p>\n<p><a title=\"Glockentar by AaronSherwood, on Flickr\" href=\"http:\/\/www.flickr.com\/photos\/asherwood\/8210783659\/\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/farm9.staticflickr.com\/8210\/8210783659_5aebb60f5b_c.jpg\" alt=\"Glockentar\" width=\"800\" height=\"598\" \/><\/a><\/p>\n<p>Here is the Arduino code:<br \/>\n<script type=\"text\/javascript\" src=\"https:\/\/gist.github.com\/4136640.js\">\/\/ <![CDATA[\n\n\/\/ ]]><\/script><\/p>\n<p>Here is the OF code:<br \/>\n<script type=\"text\/javascript\" src=\"https:\/\/gist.github.com\/4136650.js?file=ofGlockentar\"><\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Glockentar\u00a0combines a glockenspiel with a guitar. Each time a string is plucked a glockenspiel bell is struck with a solenoid, and a beam of light is projected across the length of the string. The light follows a logarithmic\u00a0curve in &hellip; <a href=\"https:\/\/aaron-sherwood.com\/blog\/?p=381\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20,3,23,10,4,29],"tags":[114,30,31,11,33,32],"class_list":["post-381","post","type-post","status-publish","format-standard","hentry","category-arduino","category-itp","category-itp-group-blog","category-openframeworks","category-pcomp","category-projection-mapping","tag-arduino","tag-glockentar","tag-madmapper","tag-openframeworks-2","tag-physical-computing","tag-projection-mapping-2"],"_links":{"self":[{"href":"https:\/\/aaron-sherwood.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/381","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aaron-sherwood.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aaron-sherwood.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aaron-sherwood.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aaron-sherwood.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=381"}],"version-history":[{"count":44,"href":"https:\/\/aaron-sherwood.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/381\/revisions"}],"predecessor-version":[{"id":2102,"href":"https:\/\/aaron-sherwood.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/381\/revisions\/2102"}],"wp:attachment":[{"href":"https:\/\/aaron-sherwood.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=381"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aaron-sherwood.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=381"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aaron-sherwood.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=381"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}