{"id":773,"date":"2014-10-23T12:17:51","date_gmt":"2014-10-23T12:17:51","guid":{"rendered":"http:\/\/blog.vwlowen.co.uk\/?p=773"},"modified":"2014-10-23T12:33:23","modified_gmt":"2014-10-23T12:33:23","slug":"automatic-voltage-sensing-car-auxiliary-socket","status":"publish","type":"post","link":"http:\/\/vwlowen.co.uk\/blog\/?p=773","title":{"rendered":"Automatic Voltage Sensing Car Auxiliary Socket"},"content":{"rendered":"<p><a href=\"http:\/\/blog.vwlowen.co.uk\/wp-content\/uploads\/2014\/10\/battery-monitor.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/blog.vwlowen.co.uk\/wp-content\/uploads\/2014\/10\/battery-monitor-300x225.jpg\" alt=\"battery-monitor\" width=\"300\" height=\"225\" class=\"alignnone size-medium wp-image-774\" srcset=\"http:\/\/vwlowen.co.uk\/blog\/wp-content\/uploads\/2014\/10\/battery-monitor-300x225.jpg 300w, http:\/\/vwlowen.co.uk\/blog\/wp-content\/uploads\/2014\/10\/battery-monitor.jpg 640w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>There are many devices which are designed to plug into a car&#8217;s auxiliary socket (formerly known as the cigarette lighter socket) which, ideally, depend upon the voltage turning off with the ignition. One such device, which I&#8217;ve recently fitted to my own car, is a dashcam. Luckily, the power to my car&#8217;s auxiliary socket <i>is<\/i> switched with the ignition but there are a lot of cars in which the power isn&#8217;t switched with the ignition.<\/p>\n<p>I&#8217;ve spotted one or two dashcams which can automatically sense if the engine is running but they tend to be very top of the range devices costing \u00a3150++.  For the  rest of us, it&#8217;s inconvenient to keep plugging in and un-plugging the dashcam&#8217;s power lead at the start and end of each journey (or fitting some sort of switch)  and, in any event, is likely to be forgotten just when it&#8217;s needed!<\/p>\n<p>This project is designed to monitor the battery&#8217;s voltage to determine whether the engine is running or not. It plugs into the auxiliary socket at the &#8220;front end&#8221; and has it&#8217;s own switched auxiliary socket at the &#8220;rear end&#8221;.  I&#8217;ve only been able to find one commercially-available product which does the same and, in my opinion, it seems a bit expensive.  Depending on what you already have in your spares box, this project should cost about a third of its commercial counterpart.<\/p>\n<p>Details on my main site:<br \/>\n<a href=\" http:\/\/vwlowen.co.uk\/arduino\/car-battery-monitor\/car-battery-monitor.htm\" target=\"_blank\"> http:\/\/vwlowen.co.uk\/arduino\/car-battery-monitor\/car-battery-monitor.htm<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>There are many devices which are designed to plug into a car&#8217;s auxiliary socket (formerly known as the cigarette lighter socket) which, ideally, depend upon the voltage turning off with the ignition. One such device, which I&#8217;ve recently fitted to my own car, is a dashcam. Luckily, the power to my car&#8217;s auxiliary socket is [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7,10,9],"tags":[],"class_list":["post-773","post","type-post","status-publish","format-standard","hentry","category-car","category-computing","category-electronics"],"_links":{"self":[{"href":"http:\/\/vwlowen.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/773","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/vwlowen.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/vwlowen.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/vwlowen.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/vwlowen.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=773"}],"version-history":[{"count":4,"href":"http:\/\/vwlowen.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/773\/revisions"}],"predecessor-version":[{"id":778,"href":"http:\/\/vwlowen.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/773\/revisions\/778"}],"wp:attachment":[{"href":"http:\/\/vwlowen.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=773"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/vwlowen.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=773"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/vwlowen.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=773"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}