{"id":3668,"date":"2025-08-23T15:44:00","date_gmt":"2025-08-23T22:44:00","guid":{"rendered":"https:\/\/digitalnigel.com\/wordpress\/?p=3668"},"modified":"2025-09-13T16:03:57","modified_gmt":"2025-09-13T23:03:57","slug":"christmas-tree-watering-sensor","status":"publish","type":"post","link":"https:\/\/digitalnigel.com\/wordpress\/?p=3668","title":{"rendered":"Christmas Tree Watering Sensor"},"content":{"rendered":"\n<p>Last year I saw a friend of mine, Kenneth at <a href=\"https:\/\/blog.thelifeofkenneth.com\/\">thelifeofkenneth.com<\/a>, had a clever idea where he made a little blinking indicator with a 555 timer and a float switch to let you know when you needed to add water to your christmas tree stand. I had ordered some float switches at the time, and they&#8217;ve sat around on my bench since then. August seems like the appropriate time to be making Christmas associated projects, so I&#8217;m going to shamelessly rip off his idea.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/digitalnigel.com\/wordpress\/wp-content\/uploads\/2025\/09\/water-level-sensor.gif\"><img loading=\"lazy\" decoding=\"async\" width=\"320\" height=\"180\" src=\"https:\/\/digitalnigel.com\/wordpress\/wp-content\/uploads\/2025\/09\/water-level-sensor.gif\" alt=\"\" class=\"wp-image-3678\" style=\"object-fit:cover\"\/><\/a><\/figure>\n<\/div>\n\n\n<p>As you can imagine, the schematic is very simple. A USB port for power, a 555 timer, a couple LEDs and passives, and the screw terminal for the float switch.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/digitalnigel.com\/wordpress\/wp-content\/uploads\/2025\/09\/water-widget-schematic.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"911\" src=\"https:\/\/digitalnigel.com\/wordpress\/wp-content\/uploads\/2025\/09\/water-widget-schematic-1024x911.jpg\" alt=\"\" class=\"wp-image-3679\" srcset=\"https:\/\/digitalnigel.com\/wordpress\/wp-content\/uploads\/2025\/09\/water-widget-schematic-1024x911.jpg 1024w, https:\/\/digitalnigel.com\/wordpress\/wp-content\/uploads\/2025\/09\/water-widget-schematic-300x267.jpg 300w, https:\/\/digitalnigel.com\/wordpress\/wp-content\/uploads\/2025\/09\/water-widget-schematic-150x133.jpg 150w, https:\/\/digitalnigel.com\/wordpress\/wp-content\/uploads\/2025\/09\/water-widget-schematic-768x683.jpg 768w, https:\/\/digitalnigel.com\/wordpress\/wp-content\/uploads\/2025\/09\/water-widget-schematic.jpg 1372w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">Screenshot<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Last year I saw a friend of mine, Kenneth at thelifeofkenneth.com, had a clever idea where he made a little blinking indicator with a 555 timer and a float switch to let you know when you needed to add water &hellip; <a href=\"https:\/\/digitalnigel.com\/wordpress\/?p=3668\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3668","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/digitalnigel.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/3668","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/digitalnigel.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/digitalnigel.com\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/digitalnigel.com\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/digitalnigel.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3668"}],"version-history":[{"count":1,"href":"https:\/\/digitalnigel.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/3668\/revisions"}],"predecessor-version":[{"id":3680,"href":"https:\/\/digitalnigel.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/3668\/revisions\/3680"}],"wp:attachment":[{"href":"https:\/\/digitalnigel.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3668"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/digitalnigel.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3668"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/digitalnigel.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3668"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}