{"id":13470,"date":"2015-09-30T16:01:52","date_gmt":"2015-09-30T15:01:52","guid":{"rendered":"http:\/\/www.recantha.co.uk\/blog\/?p=13470"},"modified":"2015-09-30T13:03:22","modified_gmt":"2015-09-30T12:03:22","slug":"using-a-hall-effect-sensor-with-the-raspberry-pi","status":"publish","type":"post","link":"https:\/\/www.recantha.co.uk\/blog\/?p=13470","title":{"rendered":"Using a hall-effect sensor with the Raspberry Pi"},"content":{"rendered":"<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/i0.wp.com\/www.raspberrypi-spy.co.uk\/wp-content\/uploads\/2015\/09\/hall_effect_01-702x336.jpg?resize=560%2C268\" alt=\"\" width=\"560\" height=\"268\" \/><\/p>\n<p>Matt Hawkins wanted to detect a magnet on his 3D printer. To do this, he has used a hall-effect sensor module and some simple Python script on the Raspberry Pi. If you want to experiment with this nice little, cheap sensor, <a href=\"http:\/\/www.raspberrypi-spy.co.uk\/2015\/09\/how-to-use-a-hall-effect-sensor-with-the-raspberry-pi\/\" target=\"_blank\">take a look at his blog here<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Matt Hawkins wanted to detect a magnet on his 3D printer. To do this, he has used a hall-effect sensor module and some simple Python script on the Raspberry Pi. If you want to experiment with this nice little, cheap&hellip;<\/p>\n<p class=\"more-link-p\"><a class=\"more-link\" href=\"https:\/\/www.recantha.co.uk\/blog\/?p=13470\">Read more &rarr;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[39,62,51],"tags":[],"class_list":["post-13470","post","type-post","status-publish","format-standard","hentry","category-programming","category-sensors","category-tutorials"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Using a hall-effect sensor with the Raspberry Pi - Raspberry Pi Pod<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.recantha.co.uk\/blog\/?p=13470\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Using a hall-effect sensor with the Raspberry Pi - Raspberry Pi Pod\" \/>\n<meta property=\"og:description\" content=\"Matt Hawkins wanted to detect a magnet on his 3D printer. To do this, he has used a hall-effect sensor module and some simple Python script on the Raspberry Pi. If you want to experiment with this nice little, cheap&hellip;Read more &rarr;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.recantha.co.uk\/blog\/?p=13470\" \/>\n<meta property=\"og:site_name\" content=\"Raspberry Pi Pod\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/recantha\/\" \/>\n<meta property=\"article:published_time\" content=\"2015-09-30T15:01:52+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/www.raspberrypi-spy.co.uk\/wp-content\/uploads\/2015\/09\/hall_effect_01-702x336.jpg\" \/>\n<meta name=\"author\" content=\"Michael Horne\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@recantha\" \/>\n<meta name=\"twitter:site\" content=\"@recantha\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Michael Horne\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/?p=13470#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/?p=13470\"},\"author\":{\"name\":\"Michael Horne\",\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/#\/schema\/person\/c27c4ef2ee1c18b130f1fcd5dcdbb263\"},\"headline\":\"Using a hall-effect sensor with the Raspberry Pi\",\"datePublished\":\"2015-09-30T15:01:52+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/?p=13470\"},\"wordCount\":56,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/?p=13470#primaryimage\"},\"thumbnailUrl\":\"http:\/\/www.raspberrypi-spy.co.uk\/wp-content\/uploads\/2015\/09\/hall_effect_01-702x336.jpg\",\"articleSection\":[\"Programming\",\"Sensors\",\"Tutorials\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.recantha.co.uk\/blog\/?p=13470#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/?p=13470\",\"url\":\"https:\/\/www.recantha.co.uk\/blog\/?p=13470\",\"name\":\"Using a hall-effect sensor with the Raspberry Pi - Raspberry Pi Pod\",\"isPartOf\":{\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/?p=13470#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/?p=13470#primaryimage\"},\"thumbnailUrl\":\"http:\/\/www.raspberrypi-spy.co.uk\/wp-content\/uploads\/2015\/09\/hall_effect_01-702x336.jpg\",\"datePublished\":\"2015-09-30T15:01:52+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/?p=13470#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.recantha.co.uk\/blog\/?p=13470\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/?p=13470#primaryimage\",\"url\":\"http:\/\/www.raspberrypi-spy.co.uk\/wp-content\/uploads\/2015\/09\/hall_effect_01-702x336.jpg\",\"contentUrl\":\"http:\/\/www.raspberrypi-spy.co.uk\/wp-content\/uploads\/2015\/09\/hall_effect_01-702x336.jpg\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/?p=13470#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.recantha.co.uk\/blog\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Using a hall-effect sensor with the Raspberry Pi\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/#website\",\"url\":\"https:\/\/www.recantha.co.uk\/blog\/\",\"name\":\"Raspberry Pi Pod\",\"description\":\"Experiences with the Raspberry Pi micro computer and microcontroller\",\"publisher\":{\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.recantha.co.uk\/blog\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/#organization\",\"name\":\"Raspberry Pi Pod\",\"url\":\"https:\/\/www.recantha.co.uk\/blog\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2016\/03\/cropped-PiPod-Logo-v3.png?fit=800%2C337&ssl=1\",\"contentUrl\":\"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2016\/03\/cropped-PiPod-Logo-v3.png?fit=800%2C337&ssl=1\",\"width\":800,\"height\":337,\"caption\":\"Raspberry Pi Pod\"},\"image\":{\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/#\/schema\/logo\/image\/\"},\"sameAs\":[\"https:\/\/www.facebook.com\/recantha\/\",\"https:\/\/x.com\/recantha\",\"https:\/\/www.linkedin.com\/in\/recantha\/\",\"https:\/\/www.youtube.com\/channel\/UCK4F9blabxzmk8Inzhs8tpg\"]},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/#\/schema\/person\/c27c4ef2ee1c18b130f1fcd5dcdbb263\",\"name\":\"Michael Horne\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/479778b0677caadde0ceb54c4129804ef674914607e3ed0998808148357d10d8?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/479778b0677caadde0ceb54c4129804ef674914607e3ed0998808148357d10d8?s=96&d=mm&r=g\",\"caption\":\"Michael Horne\"},\"url\":\"https:\/\/www.recantha.co.uk\/blog\/?author=1\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Using a hall-effect sensor with the Raspberry Pi - Raspberry Pi Pod","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.recantha.co.uk\/blog\/?p=13470","og_locale":"en_US","og_type":"article","og_title":"Using a hall-effect sensor with the Raspberry Pi - Raspberry Pi Pod","og_description":"Matt Hawkins wanted to detect a magnet on his 3D printer. To do this, he has used a hall-effect sensor module and some simple Python script on the Raspberry Pi. If you want to experiment with this nice little, cheap&hellip;Read more &rarr;","og_url":"https:\/\/www.recantha.co.uk\/blog\/?p=13470","og_site_name":"Raspberry Pi Pod","article_publisher":"https:\/\/www.facebook.com\/recantha\/","article_published_time":"2015-09-30T15:01:52+00:00","og_image":[{"url":"http:\/\/www.raspberrypi-spy.co.uk\/wp-content\/uploads\/2015\/09\/hall_effect_01-702x336.jpg","type":"","width":"","height":""}],"author":"Michael Horne","twitter_card":"summary_large_image","twitter_creator":"@recantha","twitter_site":"@recantha","twitter_misc":{"Written by":"Michael Horne"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.recantha.co.uk\/blog\/?p=13470#article","isPartOf":{"@id":"https:\/\/www.recantha.co.uk\/blog\/?p=13470"},"author":{"name":"Michael Horne","@id":"https:\/\/www.recantha.co.uk\/blog\/#\/schema\/person\/c27c4ef2ee1c18b130f1fcd5dcdbb263"},"headline":"Using a hall-effect sensor with the Raspberry Pi","datePublished":"2015-09-30T15:01:52+00:00","mainEntityOfPage":{"@id":"https:\/\/www.recantha.co.uk\/blog\/?p=13470"},"wordCount":56,"commentCount":0,"publisher":{"@id":"https:\/\/www.recantha.co.uk\/blog\/#organization"},"image":{"@id":"https:\/\/www.recantha.co.uk\/blog\/?p=13470#primaryimage"},"thumbnailUrl":"http:\/\/www.raspberrypi-spy.co.uk\/wp-content\/uploads\/2015\/09\/hall_effect_01-702x336.jpg","articleSection":["Programming","Sensors","Tutorials"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.recantha.co.uk\/blog\/?p=13470#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.recantha.co.uk\/blog\/?p=13470","url":"https:\/\/www.recantha.co.uk\/blog\/?p=13470","name":"Using a hall-effect sensor with the Raspberry Pi - Raspberry Pi Pod","isPartOf":{"@id":"https:\/\/www.recantha.co.uk\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.recantha.co.uk\/blog\/?p=13470#primaryimage"},"image":{"@id":"https:\/\/www.recantha.co.uk\/blog\/?p=13470#primaryimage"},"thumbnailUrl":"http:\/\/www.raspberrypi-spy.co.uk\/wp-content\/uploads\/2015\/09\/hall_effect_01-702x336.jpg","datePublished":"2015-09-30T15:01:52+00:00","breadcrumb":{"@id":"https:\/\/www.recantha.co.uk\/blog\/?p=13470#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.recantha.co.uk\/blog\/?p=13470"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.recantha.co.uk\/blog\/?p=13470#primaryimage","url":"http:\/\/www.raspberrypi-spy.co.uk\/wp-content\/uploads\/2015\/09\/hall_effect_01-702x336.jpg","contentUrl":"http:\/\/www.raspberrypi-spy.co.uk\/wp-content\/uploads\/2015\/09\/hall_effect_01-702x336.jpg"},{"@type":"BreadcrumbList","@id":"https:\/\/www.recantha.co.uk\/blog\/?p=13470#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.recantha.co.uk\/blog"},{"@type":"ListItem","position":2,"name":"Using a hall-effect sensor with the Raspberry Pi"}]},{"@type":"WebSite","@id":"https:\/\/www.recantha.co.uk\/blog\/#website","url":"https:\/\/www.recantha.co.uk\/blog\/","name":"Raspberry Pi Pod","description":"Experiences with the Raspberry Pi micro computer and microcontroller","publisher":{"@id":"https:\/\/www.recantha.co.uk\/blog\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.recantha.co.uk\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.recantha.co.uk\/blog\/#organization","name":"Raspberry Pi Pod","url":"https:\/\/www.recantha.co.uk\/blog\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.recantha.co.uk\/blog\/#\/schema\/logo\/image\/","url":"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2016\/03\/cropped-PiPod-Logo-v3.png?fit=800%2C337&ssl=1","contentUrl":"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2016\/03\/cropped-PiPod-Logo-v3.png?fit=800%2C337&ssl=1","width":800,"height":337,"caption":"Raspberry Pi Pod"},"image":{"@id":"https:\/\/www.recantha.co.uk\/blog\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/recantha\/","https:\/\/x.com\/recantha","https:\/\/www.linkedin.com\/in\/recantha\/","https:\/\/www.youtube.com\/channel\/UCK4F9blabxzmk8Inzhs8tpg"]},{"@type":"Person","@id":"https:\/\/www.recantha.co.uk\/blog\/#\/schema\/person\/c27c4ef2ee1c18b130f1fcd5dcdbb263","name":"Michael Horne","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.recantha.co.uk\/blog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/479778b0677caadde0ceb54c4129804ef674914607e3ed0998808148357d10d8?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/479778b0677caadde0ceb54c4129804ef674914607e3ed0998808148357d10d8?s=96&d=mm&r=g","caption":"Michael Horne"},"url":"https:\/\/www.recantha.co.uk\/blog\/?author=1"}]}},"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p2RsaV-3vg","jetpack-related-posts":[{"id":2663,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=2663","url_meta":{"origin":13470,"position":0},"title":"The RaspberryPi Tricorder &#8211; the Picorder","author":"Michael Horne","date":"6 March 2013","format":false,"excerpt":"This project has been in progress since I first received my Raspberry Pi last July. Until now, I just haven't had the time to record video. The Picorder is a Pi\/Arduino combination taking readings from 2 temperature sensors, a hall-effect magnetism sensor and an ultrasonic distance sensor which it then\u2026","rel":"","context":"In &quot;Arduino&quot;","block_context":{"text":"Arduino","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=55"},"img":{"alt_text":"SAMSUNG","src":"\/blog\/wp-content\/uploads\/2013\/03\/060320131-300x225.jpg","width":350,"height":200},"classes":[]},{"id":13617,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=13617","url_meta":{"origin":13470,"position":1},"title":"Hamsters: Lazy or marathon-runners? Let your Raspberry Pi work that out","author":"Michael Horne","date":"28 October 2015","format":false,"excerpt":"Last year, Los Angeles-based software engineer Michelle Leonhart\u00a0brought two\u00a0Roborovski hamster puppies into her home.\u00a0Since then, she read on the internet that the average\u00a0Roborovski hamster runs four marathons every night. She decided to put that to the test. Enter the Raspberry Pi. She connected the hamster wheel to a VCR head\u2026","rel":"","context":"In &quot;Making&quot;","block_context":{"text":"Making","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=50"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2015\/10\/HamsterPi.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":1572,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=1572","url_meta":{"origin":13470,"position":2},"title":"Warn people off with a #RaspberryPi motion sensor and sound effect","author":"Michael Horne","date":"28 January 2013","format":false,"excerpt":"Here's a quick tutorial on using an ultrasonic range sensor to detect nearby movement and play a sound to 'warn' people off! Sensors and Raspberry Pi: I2C connection.","rel":"","context":"In &quot;Tutorials&quot;","block_context":{"text":"Tutorials","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=51"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":858,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=858","url_meta":{"origin":13470,"position":3},"title":"Orientation sensing with the Raspberry Pi and MinIMU-9 v2 (reblog)","author":"Michael Horne","date":"27 November 2012","format":false,"excerpt":"Interesting post on connecting a MiniMU sensor to the Pi to sense the 3D orientation of the sensor. Another little tidbit for those who, like me, are sensor-mad. David Grayson's blog: Orientation sensing with the Raspberry Pi and MinIMU-9 v2.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":12775,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=12775","url_meta":{"origin":13470,"position":4},"title":"Read temperature, pressure and altitude with the BMP180 sensor on the Raspberry Pi","author":"Michael Horne","date":"16 June 2015","format":false,"excerpt":"Malcolm Maclean is developing an eBook for the Raspberry Pi and it's available for you to read online. One of the\u00a0sections of the book is all about the brilliant little BMP180 sensor (pictured above). This sensor, which replaces the larger BMP085, can read temperature, pressure and altitude and then exposes\u2026","rel":"","context":"In &quot;Programming&quot;","block_context":{"text":"Programming","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=39"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/leanpub.com\/site_images\/RPiMRE\/bmp180-17.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/leanpub.com\/site_images\/RPiMRE\/bmp180-17.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/leanpub.com\/site_images\/RPiMRE\/bmp180-17.png?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/leanpub.com\/site_images\/RPiMRE\/bmp180-17.png?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/leanpub.com\/site_images\/RPiMRE\/bmp180-17.png?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":18922,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=18922","url_meta":{"origin":13470,"position":5},"title":"&#8220;I&#8217;ve got movement, I&#8217;ve got readings&#8230;&#8221; An Aliens-inspired motion tracker using a Raspberry Pi","author":"Michael Horne","date":"9 June 2018","format":false,"excerpt":"Richard Martin has taken a Hama slide viewer, a small screen and a Raspberry Pi, together with some power and audio circuitry, and created this brilliant Aliens-style movie prop. It allows you to sweep back and forth with a corresponding movement of the display (thanks to a compass sensor) and\u2026","rel":"","context":"In &quot;Making&quot;","block_context":{"text":"Making","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=50"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2018\/06\/motion-tracker.jpg?fit=1200%2C675&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2018\/06\/motion-tracker.jpg?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2018\/06\/motion-tracker.jpg?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2018\/06\/motion-tracker.jpg?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2018\/06\/motion-tracker.jpg?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/13470","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=13470"}],"version-history":[{"count":1,"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/13470\/revisions"}],"predecessor-version":[{"id":13471,"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/13470\/revisions\/13471"}],"wp:attachment":[{"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=13470"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=13470"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=13470"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}