{"id":743,"date":"2016-07-09T22:10:06","date_gmt":"2016-07-09T22:10:06","guid":{"rendered":"http:\/\/afrotechmods.com\/tutorials\/?p=743"},"modified":"2020-05-18T04:34:43","modified_gmt":"2020-05-18T04:34:43","slug":"how-to-build-a-simple-laser-tachometer","status":"publish","type":"post","link":"https:\/\/afrotechmods.com\/tutorials\/2016\/07\/09\/how-to-build-a-simple-laser-tachometer\/","title":{"rendered":"How to build a simple laser tachometer"},"content":{"rendered":"<p>Did you know you can use an LED as a light sensor? In this video I show you how to use this phenomenon to build a laser tachometer capable of measuring the RPM of mechanical devices.<\/p>\n<style>.embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }<\/style>\n<div class=\"embed-container\"><iframe src=\"https:\/\/www.youtube.com\/embed\/RfitqGLPCUY\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\" frameborder=\"0\"><\/iframe><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Did you know you can use an LED as a light sensor? In this video I show you how to use this phenomenon to build a laser tachometer capable of measuring the RPM of mechanical devices.<\/p>\n","protected":false},"author":1,"featured_media":824,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[5,9],"tags":[93,103,105,104],"class_list":["post-743","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-intermediate-tutorials","category-random-fun","tag-laser","tag-laser-diode","tag-rpm","tag-tachometer"],"acf":[],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/afrotechmods.com\/tutorials\/wp-content\/uploads\/2016\/07\/lasertachometer-thumbnail332x187.jpg","_links":{"self":[{"href":"https:\/\/afrotechmods.com\/tutorials\/wp-json\/wp\/v2\/posts\/743","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afrotechmods.com\/tutorials\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afrotechmods.com\/tutorials\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afrotechmods.com\/tutorials\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afrotechmods.com\/tutorials\/wp-json\/wp\/v2\/comments?post=743"}],"version-history":[{"count":4,"href":"https:\/\/afrotechmods.com\/tutorials\/wp-json\/wp\/v2\/posts\/743\/revisions"}],"predecessor-version":[{"id":1239,"href":"https:\/\/afrotechmods.com\/tutorials\/wp-json\/wp\/v2\/posts\/743\/revisions\/1239"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/afrotechmods.com\/tutorials\/wp-json\/wp\/v2\/media\/824"}],"wp:attachment":[{"href":"https:\/\/afrotechmods.com\/tutorials\/wp-json\/wp\/v2\/media?parent=743"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afrotechmods.com\/tutorials\/wp-json\/wp\/v2\/categories?post=743"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afrotechmods.com\/tutorials\/wp-json\/wp\/v2\/tags?post=743"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}