{"id":13534,"date":"2015-10-10T20:00:41","date_gmt":"2015-10-10T19:00:41","guid":{"rendered":"http:\/\/www.recantha.co.uk\/blog\/?p=13534"},"modified":"2015-10-10T19:55:11","modified_gmt":"2015-10-10T18:55:11","slug":"decryption-machine-reproduction-with-a-raspberry-pi-turing-welchman","status":"publish","type":"post","link":"https:\/\/www.recantha.co.uk\/blog\/?p=13534","title":{"rendered":"Decryption machine reproduction with a Raspberry Pi (Turing-Welchman)"},"content":{"rendered":"<p><a href=\"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2015\/10\/bome.jpg?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-13535\" src=\"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2015\/10\/bome.jpg?resize=560%2C420&#038;ssl=1\" alt=\"bome\" width=\"560\" height=\"420\" srcset=\"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2015\/10\/bome.jpg?w=800&amp;ssl=1 800w, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2015\/10\/bome.jpg?resize=300%2C225&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2015\/10\/bome.jpg?resize=560%2C420&amp;ssl=1 560w, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2015\/10\/bome.jpg?resize=260%2C195&amp;ssl=1 260w, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2015\/10\/bome.jpg?resize=160%2C120&amp;ssl=1 160w\" sizes=\"auto, (max-width: 560px) 100vw, 560px\" \/><\/a><\/p>\n<p>The Turing-Welchman Bombe was a decryption machine used in World War II to\u00a0decipher Enigma-encoded German messages. There is a real one running at <a href=\"http:\/\/www.bletchleypark.org.uk\/\" target=\"_blank\">Bletchley Park<\/a>:<\/p>\n<p><iframe loading=\"lazy\" title=\"Running Turing Bomb - Bletchley Park\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/bZ7cd2tR0Kg?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p>New Zealander Simon Jensen visited Bletchley and decided that he wanted to build a replica of the machine, but in desktop form and using a Raspberry Pi.<\/p>\n<p>He initially wrote the software on a home-made 6502 computer in BASIC and then ported the general algorithm to C++ on the Pi. He uses an Arduino to control three stepper motors which animate the dials on the front.<\/p>\n<p>You can see a video of the working machine below and <a href=\"http:\/\/www.asciimation.co.nz\/bb\/2015\/10\/04\/bombe-completed\" target=\"_blank\">read a lot more about it on his blog<\/a>, including a full account of the build.<\/p>\n<p>Simon also built a wrist-mounted Enigma decoding machine using a tiny Arduino and OLED screen which is just lovely. You can <a href=\"http:\/\/www.asciimation.co.nz\/bb\/2015\/03\/24\/a-three-rotor-enigma-machine-wrist-watch\" target=\"_blank\">read about\u00a0<em>that<\/em> here.<\/a><\/p>\n<p><iframe loading=\"lazy\" title=\"Desktop Turing Welchman Bombe\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/TmlbNDreLDk?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Turing-Welchman Bombe was a decryption machine used in World War II to\u00a0decipher Enigma-encoded German messages. There is a real one running at Bletchley Park: New Zealander Simon Jensen visited Bletchley and decided that he wanted to build a replica&hellip;<\/p>\n<p class=\"more-link-p\"><a class=\"more-link\" href=\"https:\/\/www.recantha.co.uk\/blog\/?p=13534\">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":[55,50,39,63,68],"tags":[],"class_list":["post-13534","post","type-post","status-publish","format-standard","hentry","category-arduino","category-making","category-programming","category-retro","category-science"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Decryption machine reproduction with a Raspberry Pi (Turing-Welchman) - 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=13534\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Decryption machine reproduction with a Raspberry Pi (Turing-Welchman) - Raspberry Pi Pod\" \/>\n<meta property=\"og:description\" content=\"The Turing-Welchman Bombe was a decryption machine used in World War II to\u00a0decipher Enigma-encoded German messages. There is a real one running at Bletchley Park: New Zealander Simon Jensen visited Bletchley and decided that he wanted to build a replica&hellip;Read more &rarr;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.recantha.co.uk\/blog\/?p=13534\" \/>\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=\"2015-10-10T19:00:41+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2015\/10\/bome.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\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\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=13534#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/?p=13534\"},\"author\":{\"name\":\"Michael Horne\",\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/#\/schema\/person\/c27c4ef2ee1c18b130f1fcd5dcdbb263\"},\"headline\":\"Decryption machine reproduction with a Raspberry Pi (Turing-Welchman)\",\"datePublished\":\"2015-10-10T19:00:41+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/?p=13534\"},\"wordCount\":168,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/?p=13534#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2015\/10\/bome.jpg\",\"articleSection\":[\"Arduino\",\"Making\",\"Programming\",\"Retro\",\"Science\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.recantha.co.uk\/blog\/?p=13534#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/?p=13534\",\"url\":\"https:\/\/www.recantha.co.uk\/blog\/?p=13534\",\"name\":\"Decryption machine reproduction with a Raspberry Pi (Turing-Welchman) - 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The resultant set-up allows her to send an image to the machine over her network\u00a0with more than two colours in any\u2026","rel":"","context":"In &quot;Arduino&quot;","block_context":{"text":"Arduino","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=55"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2018\/09\/stargazing.jpg?fit=1200%2C896&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2018\/09\/stargazing.jpg?fit=1200%2C896&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2018\/09\/stargazing.jpg?fit=1200%2C896&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2018\/09\/stargazing.jpg?fit=1200%2C896&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2018\/09\/stargazing.jpg?fit=1200%2C896&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":768,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=768","url_meta":{"origin":13534,"position":2},"title":"The Social Drink Machine","author":"Michael Horne","date":"16 November 2012","format":false,"excerpt":"A drinks machine powered by the Raspberry Pi, Arduino, Facebook, Twitter and, oh yes, Alcohol. :-) The Social Drink Machine : Robofun \u2013 Create.","rel":"","context":"In &quot;Silliness&quot;","block_context":{"text":"Silliness","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=48"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":17047,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=17047","url_meta":{"origin":13534,"position":3},"title":"Real (?) wizarding duels with Raspberry Pi and T.E.N.S.","author":"Michael Horne","date":"5 July 2017","format":false,"excerpt":"Allen Pan of Sufficiently Advanced decided that Google's voice recognition service wasn't being used for the right stuff. So, he hooked up a Raspberry Pi to the service for a far more magical mission. Wizard Analogue No-Magic Dueling Simulator (W.A.N.D.S.) is Harry Potter-meets-Laser-Tag - the Pi detects the speaking of\u2026","rel":"","context":"In &quot;Arduino&quot;","block_context":{"text":"Arduino","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=55"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2017\/07\/wands.jpg?fit=994%2C556&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2017\/07\/wands.jpg?fit=994%2C556&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2017\/07\/wands.jpg?fit=994%2C556&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2017\/07\/wands.jpg?fit=994%2C556&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":14641,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=14641","url_meta":{"origin":13534,"position":4},"title":"String Art machine creates beautiful masterpieces with a Raspberry Pi","author":"Michael Horne","date":"28 April 2016","format":false,"excerpt":"https:\/\/www.youtube.com\/watch?v=mAPLx17B2AM London-based Laarco\u00a0have developed a machine to create large works of art using a technique known as \"String Art\". This technique uses thousands of nails and a single piece of string to construct a 'painting' of a subject. Laarco's machine, called \"Autograph\", uses a Raspberry Pi at it's core which\u2026","rel":"","context":"In &quot;3D printing&quot;","block_context":{"text":"3D printing","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=2"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/img.youtube.com\/vi\/mAPLx17B2AM\/0.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":1887,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=1887","url_meta":{"origin":13534,"position":5},"title":"Control Google Earth Flight simulator with #Arduino &#8211; maybe with #RaspberryPi?","author":"Michael Horne","date":"5 February 2013","format":false,"excerpt":"Two Arduino posts in one morning, what is the world coming to? Here's an Instructable where an Arduino and accelerometer sensor is used to control the Google Earth Flight Simulator on a Windows machine. I wonder if the same can be done on a Raspberry Pi? At the moment, however,\u2026","rel":"","context":"In &quot;Arduino&quot;","block_context":{"text":"Arduino","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=55"},"img":{"alt_text":"Parts & Kits for Arduino Online, Buy Microcontroller Boards, Electronic Components for Arduino - Control Google Earth Flight simulator with Arduino - Freetronics","src":"\/blog\/wp-content\/uploads\/2013\/02\/FKQII0CHCJOGJ1G.LARGE_1.jpg","width":350,"height":200},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/13534","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=13534"}],"version-history":[{"count":1,"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/13534\/revisions"}],"predecessor-version":[{"id":13536,"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/13534\/revisions\/13536"}],"wp:attachment":[{"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=13534"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=13534"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=13534"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}