{"id":12801,"date":"2016-12-08T23:16:09","date_gmt":"2016-12-09T04:16:09","guid":{"rendered":"http:\/\/embedded-lab.com\/blog\/?p=12801"},"modified":"2016-12-08T23:16:09","modified_gmt":"2016-12-09T04:16:09","slug":"8-channel-ac-current-data-logger","status":"publish","type":"post","link":"https:\/\/embedded-lab.com\/blog\/8-channel-ac-current-data-logger\/","title":{"rendered":"8-channel AC current data logger"},"content":{"rendered":"<p>This\u00a0Arduino-powered <a href=\"http:\/\/www.instructables.com\/id\/AC-Current-Monitoring-Data-Logger\/?ALLSTEPS\" target=\"_blank\">8-channel data logger<\/a> built by\u00a0<strong>smooth_jamie<\/strong>\u00a0can measure AC currents drawn by home appliances or other equipments, and record the data on an SD card with timestamp for future use. The project uses the HMCT103C 5A\/5MA current transformer\u00a0for sensing the current flowing through\u00a0a conducting wire. The current transformer output signal is very low, and therefore,\u00a0an OpAmp-based circuit is built for instrumentation. The analog output voltages corresponding to\u00a0the eight-channel current logger are digitized using an external lADS1115 16-bit\u00a0A\/D converter IC.<\/p>\n<div id=\"attachment_12802\" style=\"width: 1034px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/embedded-lab.com\/blog\/wp-content\/uploads\/2016\/12\/logger.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-12802\" class=\"size-full wp-image-12802\" src=\"http:\/\/embedded-lab.com\/blog\/wp-content\/uploads\/2016\/12\/logger.jpg\" alt=\"8-channel current data logger\" width=\"1024\" height=\"576\" srcset=\"https:\/\/embedded-lab.com\/blog\/wp-content\/uploads\/2016\/12\/logger.jpg 1024w, https:\/\/embedded-lab.com\/blog\/wp-content\/uploads\/2016\/12\/logger-580x326.jpg 580w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><p id=\"caption-attachment-12802\" class=\"wp-caption-text\">8-channel current data logger<\/p><\/div>\n<blockquote><p>Hi Everyone, welcome to my first instructable! By day I am a test engineer for a company that supplies industrial heating equipment, by night I am an avid technology hobbyist and DIY&#8217;er. Part of my work involves testing the performance of heaters, on this occasion I wanted to be able to monitor the RMS current draw of 8 devices over 1000hrs and log the data to graph the results later. I have access to a data logger but it was already committed to another project and I needed something low cost, so I decided to cobble together this basic datalogger.<\/p>\n<p>The project uses an Arduino Uno to read analogue sensors via analogue to digital converter (ADC) and records the data with a time stamp on an SD card. There is alot of theory and calculation involved in designing the circuits, so instead of explaining absolutely everything, I will just show you how to make it. If your interested in seeing the FULL hit then let me know in the comments and I will explain further.<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>This\u00a0Arduino-powered 8-channel data logger built by\u00a0smooth_jamie\u00a0can measure AC currents drawn by home appliances or other equipments, and record the data on an SD card with timestamp for future use. The project uses the HMCT103C 5A\/5MA current transformer\u00a0for sensing the current flowing through\u00a0a conducting wire. The current transformer output signal is very low, and therefore,\u00a0an OpAmp-based circuit is built for instrumentation. The analog output voltages corresponding to\u00a0the eight-channel current logger are digitized using an external lADS1115 16-bit\u00a0A\/D converter IC. Hi Everyone, welcome to my first instructable! By day I am a test engineer for a company that supplies industrial heating equipment,<\/p>\n","protected":false},"author":1,"featured_media":12802,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[150],"tags":[1583],"class_list":["post-12801","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-arduino-2","tag-current-data-logger"],"_links":{"self":[{"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/posts\/12801","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/comments?post=12801"}],"version-history":[{"count":1,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/posts\/12801\/revisions"}],"predecessor-version":[{"id":12803,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/posts\/12801\/revisions\/12803"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/media\/12802"}],"wp:attachment":[{"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/media?parent=12801"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/categories?post=12801"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/embedded-lab.com\/blog\/wp-json\/wp\/v2\/tags?post=12801"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}