{"id":12510,"date":"2015-05-02T17:45:43","date_gmt":"2015-05-02T16:45:43","guid":{"rendered":"http:\/\/www.recantha.co.uk\/blog\/?p=12510"},"modified":"2015-05-02T13:57:35","modified_gmt":"2015-05-02T12:57:35","slug":"pin-entry-system-using-a-raspberry-pi-and-pimoroni-explorer-hat","status":"publish","type":"post","link":"https:\/\/www.recantha.co.uk\/blog\/?p=12510","title":{"rendered":"PIN entry system using a Raspberry Pi and Pimoroni Explorer HAT"},"content":{"rendered":"<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/i0.wp.com\/github.com\/sandyjmacdonald\/pimoroni_learning_materials\/blob\/master\/images\/explorer_pin_entry.png?resize=560%2C621&#038;ssl=1\" alt=\"\" width=\"560\" height=\"621\" \/><\/p>\n<p>Sandy Macdonald has taken a Pimoroni Explorer HAT and used it to create a PIN entry system. At the moment, the entry system lights up some LEDs and makes a buzzer sound, but obviously it could be extended to unlock a door, a box, or whatever you choose. He&#8217;s written it up as part of the Pimoroni learning portal but has done a brief write-up of it on his blog and linked from there to the Github repository containing the full write-up. <a href=\"http:\/\/sandyjmacdonald.github.io\/2015\/04\/30\/pin-entry-system\/\" target=\"_blank\">Read the brief summary\u00a0here<\/a>\u00a0or <a href=\"https:\/\/github.com\/sandyjmacdonald\/pimoroni_learning_materials\/blob\/master\/pin_entry.md\" target=\"_blank\">visit the full write-up here<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Sandy Macdonald has taken a Pimoroni Explorer HAT and used it to create a PIN entry system. At the moment, the entry system lights up some LEDs and makes a buzzer sound, but obviously it could be extended to unlock&hellip;<\/p>\n<p class=\"more-link-p\"><a class=\"more-link\" href=\"https:\/\/www.recantha.co.uk\/blog\/?p=12510\">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":[20,50,51],"tags":[],"class_list":["post-12510","post","type-post","status-publish","format-standard","hentry","category-gpio-boards","category-making","category-tutorials"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>PIN entry system using a Raspberry Pi and Pimoroni Explorer HAT - 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=12510\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"PIN entry system using a Raspberry Pi and Pimoroni Explorer HAT - Raspberry Pi Pod\" \/>\n<meta property=\"og:description\" content=\"Sandy Macdonald has taken a Pimoroni Explorer HAT and used it to create a PIN entry system. At the moment, the entry system lights up some LEDs and makes a buzzer sound, but obviously it could be extended to unlock&hellip;Read more &rarr;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.recantha.co.uk\/blog\/?p=12510\" \/>\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=\"2015-05-02T16:45:43+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/github.com\/sandyjmacdonald\/pimoroni_learning_materials\/blob\/master\/images\/explorer_pin_entry.png?raw=true\" \/>\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=12510#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/?p=12510\"},\"author\":{\"name\":\"Michael Horne\",\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/#\/schema\/person\/c27c4ef2ee1c18b130f1fcd5dcdbb263\"},\"headline\":\"PIN entry system using a Raspberry Pi and Pimoroni Explorer HAT\",\"datePublished\":\"2015-05-02T16:45:43+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/?p=12510\"},\"wordCount\":105,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/?p=12510#primaryimage\"},\"thumbnailUrl\":\"https:\/\/github.com\/sandyjmacdonald\/pimoroni_learning_materials\/blob\/master\/images\/explorer_pin_entry.png?raw=true\",\"articleSection\":[\"GPIO boards\",\"Making\",\"Tutorials\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.recantha.co.uk\/blog\/?p=12510#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/?p=12510\",\"url\":\"https:\/\/www.recantha.co.uk\/blog\/?p=12510\",\"name\":\"PIN entry system using a Raspberry Pi and Pimoroni Explorer HAT - 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It allows you to control 8 LEDs using just 3 output pins on the HAT, which sounds impossible, but is in fact entirely possible thanks\u2026","rel":"","context":"In &quot;GPIO boards&quot;","block_context":{"text":"GPIO boards","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=20"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/github.com\/sandyjmacdonald\/pimoroni_learning_materials\/raw\/master\/images\/explorer_shift_register.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/github.com\/sandyjmacdonald\/pimoroni_learning_materials\/raw\/master\/images\/explorer_shift_register.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/github.com\/sandyjmacdonald\/pimoroni_learning_materials\/raw\/master\/images\/explorer_shift_register.png?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/github.com\/sandyjmacdonald\/pimoroni_learning_materials\/raw\/master\/images\/explorer_shift_register.png?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":20853,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=20853","url_meta":{"origin":12510,"position":1},"title":"Raspberry Pi Pico &#038; giving the Pimoroni Pico Explorer a workout","author":"Michael Horne","date":"12 February 2021","format":false,"excerpt":"Tony Goodhew has written up a great Instructable to help you get the most out of the Pimoroni Pico Explorer using the Pimoroni MicroPython firmware. 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As part of this, she set-up a slideshow tutorial at speakerdeck.com\u00a0that tells you how to use the Pimoroni Explorer HAT Pro as a musical instrument by plugging it into bananas!\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\/08\/bananas.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2015\/08\/bananas.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2015\/08\/bananas.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2015\/08\/bananas.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":20811,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=20811","url_meta":{"origin":12510,"position":3},"title":"Getting set-up with the Pimoroni Pico Explorer and using it to get the demo running","author":"Michael Horne","date":"6 February 2021","format":false,"excerpt":"When products first come out, and the inevitable add-on boards appear, one of the things that you pray for are clear, concise instructions that take you through, step-by-step how to do something basic. The Raspberry Pi Pico is incredibly \"new and exciting\", but I found myself struggling this afternoon trying\u2026","rel":"","context":"In &quot;GPIO boards&quot;","block_context":{"text":"GPIO boards","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=20"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2021\/02\/pico-addons-9_1024x1024.jpg?fit=847%2C455&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2021\/02\/pico-addons-9_1024x1024.jpg?fit=847%2C455&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2021\/02\/pico-addons-9_1024x1024.jpg?fit=847%2C455&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2021\/02\/pico-addons-9_1024x1024.jpg?fit=847%2C455&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":20863,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=20863","url_meta":{"origin":12510,"position":4},"title":"Conway&#8217;s Game of Life on a Pimoroni Pico Scroll Pack (and other accessories!)","author":"Michael Horne","date":"14 February 2021","format":false,"excerpt":"Tony Goodhew got in touch and told me about Steve Baines' effort to get the famous Conway's Game of Life running on the Raspberry Pi Pico with a Pimoroni Pico Unicorn Pack attached. You can see Steve's original script on the Pimoroni forums here. You can also read about Tony's\u2026","rel":"","context":"In &quot;Games&quot;","block_context":{"text":"Games","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=21"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2021\/02\/conway_game_of_life_sm.jpg?fit=800%2C324&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2021\/02\/conway_game_of_life_sm.jpg?fit=800%2C324&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2021\/02\/conway_game_of_life_sm.jpg?fit=800%2C324&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2021\/02\/conway_game_of_life_sm.jpg?fit=800%2C324&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":16085,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=16085","url_meta":{"origin":12510,"position":5},"title":"Pimoroni announces new HAT for the Raspberry Pi that uses a new Android OS!","author":"Michael Horne","date":"13 December 2016","format":false,"excerpt":"Pimoroni have just announced\u00a0a new HAT for the Raspberry Pi, and a new operating system to go along with it. The HAT is called the RainbowHAT (full specs in a moment) and the operating system is Android Things (TM, and that's the last time I'm typing that...) 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