{"id":56,"date":"2010-12-21T16:40:09","date_gmt":"2010-12-21T16:40:09","guid":{"rendered":"http:\/\/www.emtronics.co.uk\/wp_blog\/?p=56"},"modified":"2017-04-16T15:37:47","modified_gmt":"2017-04-16T15:37:47","slug":"super-bright-bike-helmet-lights","status":"publish","type":"post","link":"http:\/\/www.emtronics.co.uk\/wp_blog\/?p=56","title":{"rendered":"Super Bright Bike Helmet Lights"},"content":{"rendered":"<h3>Introduction<\/h3>\n<p>As I was riding into work during the winter, I wanted to try and reduce my risk of being hit by a car. I decided to make myself very noticeable and different to the drivers, which will hopefully mean they will drive with more care around me.<!--more--><\/p>\n<h3>Features<\/h3>\n<p>Attached to the helmet are 4 3W LEDs, 2 green and 2 blue. At the back there is a connecter which connects to the battery pack and electronics, this pack goes into my bag.<\/p>\n<ul>\n<li>2 x 3W blue LED<\/li>\n<li>2 x 3W green LED<\/li>\n<li>11.1v 2200mAh Li-Po battery<\/li>\n<li>Microcontroller for customisable flash sequence<\/li>\n<li>2 x DC-DC constant current power supplies for effciency.<\/li>\n<li>Quick releasing connector to helmet<\/li>\n<\/ul>\n<h3>Design<\/h3>\n<table border=\"0\">\n<tbody>\n<tr>\n<td>\n<p><figure id=\"attachment_60\" aria-describedby=\"caption-attachment-60\" style=\"width: 300px\" class=\"wp-caption alignnone\"><a href=\"http:\/\/www.emtronics.co.uk\/wp_blog\/wp-content\/uploads\/2010\/12\/DSC00947.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-60\" title=\"Bike Light Circuit\" src=\"http:\/\/www.emtronics.co.uk\/wp_blog\/wp-content\/uploads\/2010\/12\/DSC00947-300x225.jpg\" alt=\"Bike Light Circuit\" width=\"300\" height=\"225\" srcset=\"http:\/\/www.emtronics.co.uk\/wp_blog\/wp-content\/uploads\/2010\/12\/DSC00947-300x225.jpg 300w, http:\/\/www.emtronics.co.uk\/wp_blog\/wp-content\/uploads\/2010\/12\/DSC00947-1024x768.jpg 1024w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><figcaption id=\"caption-attachment-60\" class=\"wp-caption-text\">Bike Light Circuit<\/figcaption><\/figure><\/td>\n<td>\n<p><figure id=\"attachment_61\" aria-describedby=\"caption-attachment-61\" style=\"width: 300px\" class=\"wp-caption alignnone\"><a href=\"http:\/\/www.emtronics.co.uk\/wp_blog\/wp-content\/uploads\/2010\/12\/DSC00950.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-61\" title=\"Bike Light Circuit &amp; Battery\" src=\"http:\/\/www.emtronics.co.uk\/wp_blog\/wp-content\/uploads\/2010\/12\/DSC00950-300x225.jpg\" alt=\"Bike Light Circuit &amp; Battery\" width=\"300\" height=\"225\" srcset=\"http:\/\/www.emtronics.co.uk\/wp_blog\/wp-content\/uploads\/2010\/12\/DSC00950-300x225.jpg 300w, http:\/\/www.emtronics.co.uk\/wp_blog\/wp-content\/uploads\/2010\/12\/DSC00950-1024x768.jpg 1024w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><figcaption id=\"caption-attachment-61\" class=\"wp-caption-text\">Bike Light Circuit &amp; Battery<\/figcaption><\/figure><\/td>\n<\/tr>\n<tr>\n<td>\n<p><figure id=\"attachment_62\" aria-describedby=\"caption-attachment-62\" style=\"width: 300px\" class=\"wp-caption alignnone\"><a href=\"http:\/\/www.emtronics.co.uk\/wp_blog\/wp-content\/uploads\/2010\/12\/DSC01233.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-62\" title=\"Bike Helmet 1\" src=\"http:\/\/www.emtronics.co.uk\/wp_blog\/wp-content\/uploads\/2010\/12\/DSC01233-300x225.jpg\" alt=\"Bike Helmet 1\" width=\"300\" height=\"225\" srcset=\"http:\/\/www.emtronics.co.uk\/wp_blog\/wp-content\/uploads\/2010\/12\/DSC01233-300x225.jpg 300w, http:\/\/www.emtronics.co.uk\/wp_blog\/wp-content\/uploads\/2010\/12\/DSC01233-1024x768.jpg 1024w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><figcaption id=\"caption-attachment-62\" class=\"wp-caption-text\">Bike Helmet 1<\/figcaption><\/figure><\/td>\n<td>\n<p><figure id=\"attachment_63\" aria-describedby=\"caption-attachment-63\" style=\"width: 300px\" class=\"wp-caption alignnone\"><a href=\"http:\/\/www.emtronics.co.uk\/wp_blog\/wp-content\/uploads\/2010\/12\/DSC01234.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-63\" title=\"Bike Helmet 2\" src=\"http:\/\/www.emtronics.co.uk\/wp_blog\/wp-content\/uploads\/2010\/12\/DSC01234-300x225.jpg\" alt=\"Bike Helmet 2\" width=\"300\" height=\"225\" srcset=\"http:\/\/www.emtronics.co.uk\/wp_blog\/wp-content\/uploads\/2010\/12\/DSC01234-300x225.jpg 300w, http:\/\/www.emtronics.co.uk\/wp_blog\/wp-content\/uploads\/2010\/12\/DSC01234-1024x768.jpg 1024w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><figcaption id=\"caption-attachment-63\" class=\"wp-caption-text\">Bike Helmet 2<\/figcaption><\/figure><\/td>\n<\/tr>\n<tr>\n<td>\n<p><figure id=\"attachment_64\" aria-describedby=\"caption-attachment-64\" style=\"width: 300px\" class=\"wp-caption alignnone\"><a href=\"http:\/\/www.emtronics.co.uk\/wp_blog\/wp-content\/uploads\/2010\/12\/DSC01238.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-64\" title=\"Bike Light\" src=\"http:\/\/www.emtronics.co.uk\/wp_blog\/wp-content\/uploads\/2010\/12\/DSC01238-300x225.jpg\" alt=\"Bike Light\" width=\"300\" height=\"225\" srcset=\"http:\/\/www.emtronics.co.uk\/wp_blog\/wp-content\/uploads\/2010\/12\/DSC01238-300x225.jpg 300w, http:\/\/www.emtronics.co.uk\/wp_blog\/wp-content\/uploads\/2010\/12\/DSC01238-1024x768.jpg 1024w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><figcaption id=\"caption-attachment-64\" class=\"wp-caption-text\">Bike Light<\/figcaption><\/figure><\/td>\n<td>\n<p><figure id=\"attachment_65\" aria-describedby=\"caption-attachment-65\" style=\"width: 300px\" class=\"wp-caption alignnone\"><a href=\"http:\/\/www.emtronics.co.uk\/wp_blog\/wp-content\/uploads\/2010\/12\/DSC01239.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-65\" title=\"Bike Light 1\" src=\"http:\/\/www.emtronics.co.uk\/wp_blog\/wp-content\/uploads\/2010\/12\/DSC01239-300x225.jpg\" alt=\"Bike Light 1\" width=\"300\" height=\"225\" srcset=\"http:\/\/www.emtronics.co.uk\/wp_blog\/wp-content\/uploads\/2010\/12\/DSC01239-300x225.jpg 300w, http:\/\/www.emtronics.co.uk\/wp_blog\/wp-content\/uploads\/2010\/12\/DSC01239-1024x768.jpg 1024w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><figcaption id=\"caption-attachment-65\" class=\"wp-caption-text\">Bike Light 1<\/figcaption><\/figure><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>I used 2 constant current drivers I got ebay to drive the\u00a0 LEDs, I can drive the blue and green ones separatly.<\/p>\n<p>An AVR is used to controll them, this is probably a bit over kill but it&#8217;s what I have lying about!<\/p>\n<p>The battery and electroncis goes into my bag and connects to the helmet via the 4 pin connector. This was design so if there was an accident it would pull easily away from the helmet, and not pull it off my head.<\/p>\n<p>See this video to see it working:<\/p>\n<h1><a href=\"http:\/\/www.emtronics.co.uk\/wp_blog\/wp-content\/uploads\/2010\/12\/MOV01240.mp4\">Bike Light Movie<\/a><\/h1>\n","protected":false},"excerpt":{"rendered":"<p>Introduction As I was riding into work during the winter, I wanted to try and reduce my risk<\/p>\n","protected":false},"author":1,"featured_media":62,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-56","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-projects"],"_links":{"self":[{"href":"http:\/\/www.emtronics.co.uk\/wp_blog\/index.php?rest_route=\/wp\/v2\/posts\/56","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.emtronics.co.uk\/wp_blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.emtronics.co.uk\/wp_blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.emtronics.co.uk\/wp_blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.emtronics.co.uk\/wp_blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=56"}],"version-history":[{"count":8,"href":"http:\/\/www.emtronics.co.uk\/wp_blog\/index.php?rest_route=\/wp\/v2\/posts\/56\/revisions"}],"predecessor-version":[{"id":308,"href":"http:\/\/www.emtronics.co.uk\/wp_blog\/index.php?rest_route=\/wp\/v2\/posts\/56\/revisions\/308"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.emtronics.co.uk\/wp_blog\/index.php?rest_route=\/wp\/v2\/media\/62"}],"wp:attachment":[{"href":"http:\/\/www.emtronics.co.uk\/wp_blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=56"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.emtronics.co.uk\/wp_blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=56"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.emtronics.co.uk\/wp_blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=56"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}