{"id":17072,"date":"2017-07-10T13:27:43","date_gmt":"2017-07-10T12:27:43","guid":{"rendered":"http:\/\/www.recantha.co.uk\/blog\/?p=17072"},"modified":"2017-07-10T13:27:43","modified_gmt":"2017-07-10T12:27:43","slug":"raspberry-pi-robot-solves-sudoku-puzzles","status":"publish","type":"post","link":"https:\/\/www.recantha.co.uk\/blog\/?p=17072","title":{"rendered":"Raspberry Pi robot solves Sudoku puzzles"},"content":{"rendered":"<p><a href=\"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2017\/07\/sudoku.jpg?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-17073\" src=\"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2017\/07\/sudoku.jpg?resize=560%2C420&#038;ssl=1\" alt=\"\" width=\"560\" height=\"420\" srcset=\"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2017\/07\/sudoku.jpg?w=900&amp;ssl=1 900w, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2017\/07\/sudoku.jpg?resize=300%2C225&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2017\/07\/sudoku.jpg?resize=768%2C576&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2017\/07\/sudoku.jpg?resize=560%2C420&amp;ssl=1 560w, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2017\/07\/sudoku.jpg?resize=260%2C195&amp;ssl=1 260w, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2017\/07\/sudoku.jpg?resize=160%2C120&amp;ssl=1 160w\" sizes=\"auto, (max-width: 560px) 100vw, 560px\" \/><\/a><\/p>\n<p>A maker called <a href=\"https:\/\/www.hackster.io\/msana\" target=\"_blank\" rel=\"noopener\">msana<\/a>\u00a0has posted his latest project in Hackster.IO. It is a robot, based on a 3D printer, with a Raspberry Pi &amp; camera module attached. The camera takes a photo of a Sudoku puzzle placed on the print bed which is then image-processed via OpenCV to determine the exact layout of the puzzle. The puzzle is then abstracted and run through intelligence library <a href=\"https:\/\/www.tensorflow.org\/\" target=\"_blank\" rel=\"noopener\">TensorFlow<\/a>\u00a0to determine the solution. The robot part then writes the solution onto the grid using a pen attached via the motors. You can <a href=\"https:\/\/www.hackster.io\/msana\/a-sudoku-solver-s-robot-fe9e88\" target=\"_blank\" rel=\"noopener\">read more about the project here<\/a>, (<em>although I would like to have seen much more detail on the robotic part of the build).<\/em> The <a href=\"https:\/\/github.com\/Sanahm\/Sudoku-robot\" target=\"_blank\" rel=\"noopener\">code is available on GitHub<\/a>. See it in action below:<\/p>\n<p><iframe loading=\"lazy\" title=\"Sudoku&#039;s solver Robot\" width=\"560\" height=\"420\" src=\"https:\/\/www.youtube.com\/embed\/cQKQf74-gNk?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>A maker called msana\u00a0has posted his latest project in Hackster.IO. It is a robot, based on a 3D printer, with a Raspberry Pi &amp; camera module attached. The camera takes a photo of a Sudoku puzzle placed on the print&hellip;<\/p>\n<p class=\"more-link-p\"><a class=\"more-link\" href=\"https:\/\/www.recantha.co.uk\/blog\/?p=17072\">Read more &rarr;<\/a><\/p>\n","protected":false},"author":1,"featured_media":17073,"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":[54,143,8,21,50,39,45,49],"tags":[444],"class_list":["post-17072","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-accessories","category-artificial-intelligence","category-camera-module","category-games","category-making","category-programming","category-robotics","category-software","tag-sudoku"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Raspberry Pi robot solves Sudoku puzzles - 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=17072\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Raspberry Pi robot solves Sudoku puzzles - Raspberry Pi Pod\" \/>\n<meta property=\"og:description\" content=\"A maker called msana\u00a0has posted his latest project in Hackster.IO. It is a robot, based on a 3D printer, with a Raspberry Pi &amp; camera module attached. The camera takes a photo of a Sudoku puzzle placed on the print&hellip;Read more &rarr;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.recantha.co.uk\/blog\/?p=17072\" \/>\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=\"2017-07-10T12:27:43+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/i2.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2017\/07\/sudoku.jpg?fit=900%2C675&ssl=1\" \/>\n\t<meta property=\"og:image:width\" content=\"900\" \/>\n\t<meta property=\"og:image:height\" content=\"675\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\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=17072#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/?p=17072\"},\"author\":{\"name\":\"Michael Horne\",\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/#\/schema\/person\/c27c4ef2ee1c18b130f1fcd5dcdbb263\"},\"headline\":\"Raspberry Pi robot solves Sudoku puzzles\",\"datePublished\":\"2017-07-10T12:27:43+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/?p=17072\"},\"wordCount\":139,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/?p=17072#primaryimage\"},\"thumbnailUrl\":\"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2017\/07\/sudoku.jpg?fit=900%2C675&ssl=1\",\"keywords\":[\"sudoku\"],\"articleSection\":[\"Accessories\",\"Artificial intelligence\",\"Camera module\",\"Games\",\"Making\",\"Programming\",\"Robotics\",\"Software\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.recantha.co.uk\/blog\/?p=17072#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/?p=17072\",\"url\":\"https:\/\/www.recantha.co.uk\/blog\/?p=17072\",\"name\":\"Raspberry Pi robot solves Sudoku puzzles - 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He figured out how to use\u00a0a two-phase algorithm developed by Herbert Kociemba via a Python library he found on GitHub\u00a0(Open Source FTW). You\u2026","rel":"","context":"In &quot;Accessories&quot;","block_context":{"text":"Accessories","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=54"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/img.youtube.com\/vi\/jcDqRDYIceQ\/0.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":15376,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=15376","url_meta":{"origin":17072,"position":2},"title":"Watch the skies with this drone-free aerial Raspberry Pi camera robot","author":"Michael Horne","date":"31 August 2016","format":false,"excerpt":"Brook Drumm has created a robot that will crawl along a string or fishing line above a room or area and take photographs and video. It uses some 3D printed parts and a few servos and is, of course, run from a Raspberry Pi. The camera module is used for\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":"http:\/\/i1.wp.com\/makezine.com\/wp-content\/uploads\/2016\/08\/skycam-bleed.jpg?resize=350%2C200","width":350,"height":200,"srcset":"http:\/\/i1.wp.com\/makezine.com\/wp-content\/uploads\/2016\/08\/skycam-bleed.jpg?resize=350%2C200 1x, http:\/\/i1.wp.com\/makezine.com\/wp-content\/uploads\/2016\/08\/skycam-bleed.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":6962,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=6962","url_meta":{"origin":17072,"position":3},"title":"A self-balancing #RaspberryPi image processing robot","author":"Michael Horne","date":"8 November 2013","format":false,"excerpt":"Over on LetsMakeRobots, Samy74 has created a robot which balances on two wheels and uses ultrasonic distance sensors to prevent collisions. Samy has recently added the Pi camera module. Read more here","rel":"","context":"In &quot;Camera module&quot;","block_context":{"text":"Camera module","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=8"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":11803,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=11803","url_meta":{"origin":17072,"position":4},"title":"Raspberry Pi robot with streaming video and a web remote control","author":"Michael Horne","date":"17 January 2015","format":false,"excerpt":"Carl Monk's been busy. He's taken some components that he's collected during his time working with the Pi and has come up with a\u00a0robot that streams live video and allows you to control it over a mobile phone or tablet using a simple web interface. He's used a 4tronix Microcon,\u2026","rel":"","context":"In &quot;Camera module&quot;","block_context":{"text":"Camera module","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=8"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/fortoffee.org.uk\/wp-content\/uploads\/2015\/01\/2015-01-16-15.37.09.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/fortoffee.org.uk\/wp-content\/uploads\/2015\/01\/2015-01-16-15.37.09.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/fortoffee.org.uk\/wp-content\/uploads\/2015\/01\/2015-01-16-15.37.09.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/fortoffee.org.uk\/wp-content\/uploads\/2015\/01\/2015-01-16-15.37.09.jpg?resize=700%2C400 2x, https:\/\/i0.wp.com\/fortoffee.org.uk\/wp-content\/uploads\/2015\/01\/2015-01-16-15.37.09.jpg?resize=1050%2C600 3x, https:\/\/i0.wp.com\/fortoffee.org.uk\/wp-content\/uploads\/2015\/01\/2015-01-16-15.37.09.jpg?resize=1400%2C800 4x"},"classes":[]},{"id":14738,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=14738","url_meta":{"origin":17072,"position":5},"title":"Google Cardboard used as a VR viewer to this dual Raspberry Pi tank","author":"Michael Horne","date":"12 May 2016","format":false,"excerpt":"https:\/\/www.youtube.com\/watch?v=z9gSZwVMybc Freddy Kilo has built himself a tracked robot onto which he has mounted two Raspberry Pis. 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