{"id":546,"date":"2011-01-03T13:10:04","date_gmt":"2011-01-03T13:10:04","guid":{"rendered":"http:\/\/www.kozeniauskas.com\/itblog\/?p=546"},"modified":"2011-01-25T20:33:29","modified_gmt":"2011-01-25T20:33:29","slug":"led-stair-lighting-based-on-arduino-part-5","status":"publish","type":"post","link":"http:\/\/www.kozeniauskas.com\/itblog\/2011\/01\/03\/led-stair-lighting-based-on-arduino-part-5\/","title":{"rendered":"LED stair lighting based on Arduino, Part 5"},"content":{"rendered":"<p>Well the testing did not went according to plan but I was expecting that. The main problem is because I was planning to use LEDs for lighting up the stairs, but because of festive season they have not arrived yet. So instead of 1W LEDs I got stuck with 10W halogens. 10W might not look alot but the current it needs is ~0.8Amps where as LED would be 0.08Amps. The maximum that ULN2803A can handle on collector is 0.5Amps. So when I&#8217;ve got everything connected the lights worked half way and then the chips went dead \ud83d\ude41<br \/>\nThe solution would be to replace ULN2803A with 2x ULN2064 quad Darlington arrays as they can handle much higher currents.<br \/>\nI&#8217;m putting this project on hold until I get the LEDs. Hopefully it won&#8217;t be long.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Well the testing did not went according to plan but I was expecting that. The main problem is because I was planning to use LEDs for lighting up the stairs, but because of festive season they have not arrived yet. So instead of 1W LEDs I got stuck with 10W halogens. 10W might not look [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[345],"tags":[347,348],"_links":{"self":[{"href":"http:\/\/www.kozeniauskas.com\/itblog\/wp-json\/wp\/v2\/posts\/546"}],"collection":[{"href":"http:\/\/www.kozeniauskas.com\/itblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.kozeniauskas.com\/itblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.kozeniauskas.com\/itblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.kozeniauskas.com\/itblog\/wp-json\/wp\/v2\/comments?post=546"}],"version-history":[{"count":4,"href":"http:\/\/www.kozeniauskas.com\/itblog\/wp-json\/wp\/v2\/posts\/546\/revisions"}],"predecessor-version":[{"id":549,"href":"http:\/\/www.kozeniauskas.com\/itblog\/wp-json\/wp\/v2\/posts\/546\/revisions\/549"}],"wp:attachment":[{"href":"http:\/\/www.kozeniauskas.com\/itblog\/wp-json\/wp\/v2\/media?parent=546"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.kozeniauskas.com\/itblog\/wp-json\/wp\/v2\/categories?post=546"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.kozeniauskas.com\/itblog\/wp-json\/wp\/v2\/tags?post=546"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}