{"id":1511,"date":"2016-12-15T21:18:09","date_gmt":"2016-12-15T21:18:09","guid":{"rendered":"https:\/\/www.nachleben.org.uk\/skomer\/?p=1511"},"modified":"2023-12-12T16:36:00","modified_gmt":"2023-12-12T16:36:00","slug":"speed-of-time","status":"publish","type":"post","link":"https:\/\/www.nachleben.org.uk\/skomer\/?p=1511","title":{"rendered":"speed of time"},"content":{"rendered":"<p>I don&#8217;t even know if anyone reads these posts. Perhaps really I make them for myself, to chart progress, and refer back to later on. Well, actually here I am now reading this for reference, so yes mate, uts quite useful to yourself to write up these things.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium_large wp-image-1512\" src=\"https:\/\/www.nachleben.org.uk\/skomer\/wp-content\/uploads\/2016\/12\/IMG_2543-768x576.jpg\" alt=\"img_2543\" width=\"768\" height=\"576\" srcset=\"https:\/\/www.nachleben.org.uk\/skomer\/wp-content\/uploads\/2016\/12\/IMG_2543-768x576.jpg 768w, https:\/\/www.nachleben.org.uk\/skomer\/wp-content\/uploads\/2016\/12\/IMG_2543-300x225.jpg 300w, https:\/\/www.nachleben.org.uk\/skomer\/wp-content\/uploads\/2016\/12\/IMG_2543-1024x768.jpg 1024w, https:\/\/www.nachleben.org.uk\/skomer\/wp-content\/uploads\/2016\/12\/IMG_2543-450x338.jpg 450w, https:\/\/www.nachleben.org.uk\/skomer\/wp-content\/uploads\/2016\/12\/IMG_2543-850x638.jpg 850w, https:\/\/www.nachleben.org.uk\/skomer\/wp-content\/uploads\/2016\/12\/IMG_2543-667x500.jpg 667w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/p>\n<p>So with an light dependent resistor, micro-controller and signals into MAX I&#8217;m finally on way to measure shutter speeds.<\/p>\n<p>With current set-up that needs tweaking and improving we&#8217;re getting the following initial results.<\/p>\n<p>Deimos controller speed setting:<\/p>\n<ol>\n<li>&nbsp;shutter fully open&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 640 milliseconds<\/li>\n<li>&nbsp;shutter fully open&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 340 milliseconds<\/li>\n<li>&nbsp;shutter fully open&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 240 milliseconds<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<p>Heres normal shutter speeds in fractions then millisecond figures we are looking for.<\/p>\n<p>\/th second&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; milliseconds<\/p>\n<p>1\/1000&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1<\/p>\n<p>1\/500&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2<\/p>\n<p>1\/250&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 4<\/p>\n<p>1\/125&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 8<\/p>\n<p>1\/60&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 16<\/p>\n<p>1\/30&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 32<\/p>\n<p>1\/15 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 66<\/p>\n<p>1\/8 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 125<\/p>\n<p>1\/4 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 250<\/p>\n<p>1\/2 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 500<\/p>\n<p>&nbsp;<\/p>\n<p>Once the shutter gets closed (it will eventually close over completely) we should see faster and faster speeds. Presently the measuring resolution isnt good enough the accurately determine these speeds.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I don&#8217;t even know if anyone reads these posts. Perhaps really I make them for myself, to chart progress, and refer back to later on. Well, actually here I am now reading this for reference, so yes mate, uts quite useful to yourself to write up these things. So with an light dependent resistor, micro-controller and signals into MAX I&#8217;m &hellip;<\/p>\n","protected":false},"author":1,"featured_media":1512,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19],"tags":[],"class_list":["post-1511","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-lab-activity","archive-loop-container"],"_links":{"self":[{"href":"https:\/\/www.nachleben.org.uk\/skomer\/index.php?rest_route=\/wp\/v2\/posts\/1511","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nachleben.org.uk\/skomer\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nachleben.org.uk\/skomer\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nachleben.org.uk\/skomer\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nachleben.org.uk\/skomer\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1511"}],"version-history":[{"count":7,"href":"https:\/\/www.nachleben.org.uk\/skomer\/index.php?rest_route=\/wp\/v2\/posts\/1511\/revisions"}],"predecessor-version":[{"id":3695,"href":"https:\/\/www.nachleben.org.uk\/skomer\/index.php?rest_route=\/wp\/v2\/posts\/1511\/revisions\/3695"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.nachleben.org.uk\/skomer\/index.php?rest_route=\/wp\/v2\/media\/1512"}],"wp:attachment":[{"href":"https:\/\/www.nachleben.org.uk\/skomer\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1511"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nachleben.org.uk\/skomer\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1511"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nachleben.org.uk\/skomer\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1511"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}