{"id":4189,"date":"2012-07-31T19:36:04","date_gmt":"2012-07-31T18:36:04","guid":{"rendered":"http:\/\/www.markwilson.co.uk\/blog\/?p=4189"},"modified":"2014-08-05T14:34:33","modified_gmt":"2014-08-05T13:34:33","slug":"traffic-lights-for-my-home-office","status":"publish","type":"post","link":"https:\/\/www.markwilson.co.uk\/blog\/2012\/07\/traffic-lights-for-my-home-office.htm","title":{"rendered":"“Traffic lights” for my home office"},"content":{"rendered":"

It’s the school holidays, which means that working from home can be a little… noisy… at times. \u00a0Earlier today I saw a blog post from Scott Hanselman where he had hooked a light up to his instant messenger status<\/a> to tell his family when he was on a call, or otherwise busy with work – and that gave me an idea…<\/p>\n

Scott’s solution uses something called a Busylight<\/a>\u00a0but a) I’m too tight to spend \u20ac49 on this and b) the geek in me thinks “surely I can rig up something using a few LEDs?”. One of the comments on Scott’s post led me to an open source project called RealStatus<\/a> but that uses an expensive USB HID for the LEDs so doesn’t really move me much further forward…<\/p>\n

\"\"I decided that I should use my Arduino<\/a> instead… with the added bonus that involving the children in the project might get them “onboard” too… the trouble is that my electronics prototyping skills are still fairly rudimentary.<\/p>\n

As it happens, that’s not a problem – I found an Arduino traffic light program for beginners<\/a> and, as I don’t have a yellow LED right now, I adapted it to what I do have – simple red\/green status (my son and I had fun trying different resistors to adjust the brightness of the LEDs)<\/p>\n

You can see the breadboard view here (generated with Fritzing<\/a> – I’m still working out how to make this into a schematic) and below is my Arduino code (which is also available on github<\/a> – although I might have worked on it a bit by the time you read this):<\/p>\n


\n\/\/ Pins for coloured LEDs
\nint red = 12;
\nint green = 13;<\/p>\n

void setup(){
\n \/\/ Set up pins as output devices
\n pinMode(red,OUTPUT);
\n pinMode(green,OUTPUT);
\n}<\/p>\n

void loop(){
\n \/\/ Change the lights
\n \/\/ turnLightRed();
\n turnLightGreen();
\n}<\/p>\n

void turnLightGreen(){
\n \/\/ Turn off the red and turn on the green
\n digitalWrite(red,LOW);
\n digitalWrite(green,HIGH);
\n}<\/p>\n

void turnLightRed(){
\n \/\/ Turn off the green and turn on the red
\n digitalWrite(green,LOW);
\n digitalWrite(red,HIGH);
\n}
\n<\/dirtycode><\/p>\n

It’s pretty simple really – I just call the turnLightRed()<\/code> or turnLightGreen()<\/code> function according to whether I am ready to accept visitors. In itself, that’s a bit limited but the next step will be to work out how to send commands to the Arduino over USB (for some integration with my instant messaging client, perhaps) or even using a messaging service (Twitter?) and some network connectivity… more research required!<\/p>\n","protected":false},"excerpt":{"rendered":"

It’s the school holidays, which means that working from home can be a little… noisy… at times. \u00a0Earlier today I saw a blog post from Scott Hanselman where he had hooked a light up to his instant messenger status to tell his family when he was on a call, or otherwise busy with work – … Continue reading “Traffic lights” for my home office<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[218],"tags":[369,425],"class_list":["post-4189","post","type-post","status-publish","format-standard","hentry","category-technology","tag-arduino","tag-electronics"],"yoast_head":"\n"Traffic lights" for my home office - markwilson.it<\/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.markwilson.co.uk\/blog\/2012\/07\/traffic-lights-for-my-home-office.htm\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\""Traffic lights" for my home office - markwilson.it\" \/>\n<meta property=\"og:description\" content=\"It’s the school holidays, which means that working from home can be a little… noisy… at times. \u00a0Earlier today I saw a blog post from Scott Hanselman where he had hooked a light up to his instant messenger status to tell his family when he was on a call, or otherwise busy with work – … Continue reading “Traffic lights” for my home office\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.markwilson.co.uk\/blog\/2012\/07\/traffic-lights-for-my-home-office.htm\" \/>\n<meta property=\"og:site_name\" content=\"markwilson.it\" \/>\n<meta property=\"article:published_time\" content=\"2012-07-31T18:36:04+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2014-08-05T13:34:33+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.markwilson.co.uk\/blog\/images\/basic-red-green-led-bb.png\" \/>\n<meta name=\"author\" content=\"Mark Wilson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@markwilsonit\" \/>\n<meta name=\"twitter:site\" content=\"@markwilsonit\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Mark Wilson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2012\\\/07\\\/traffic-lights-for-my-home-office.htm#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2012\\\/07\\\/traffic-lights-for-my-home-office.htm\"},\"author\":{\"name\":\"Mark Wilson\",\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/#\\\/schema\\\/person\\\/98f61365e7c39d6be942174b8c4de468\"},\"headline\":\"“Traffic lights” for my home office\",\"datePublished\":\"2012-07-31T18:36:04+00:00\",\"dateModified\":\"2014-08-05T13:34:33+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2012\\\/07\\\/traffic-lights-for-my-home-office.htm\"},\"wordCount\":417,\"commentCount\":4,\"publisher\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/#\\\/schema\\\/person\\\/98f61365e7c39d6be942174b8c4de468\"},\"image\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2012\\\/07\\\/traffic-lights-for-my-home-office.htm#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/images\\\/basic-red-green-led-bb.png\",\"keywords\":[\"Arduino\",\"Electronics\"],\"articleSection\":[\"Technology\"],\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2012\\\/07\\\/traffic-lights-for-my-home-office.htm#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2012\\\/07\\\/traffic-lights-for-my-home-office.htm\",\"url\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2012\\\/07\\\/traffic-lights-for-my-home-office.htm\",\"name\":\"\\\"Traffic lights\\\" for my home office - 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I was so excited about having something\u2026","rel":"","context":"In "Technology"","block_context":{"text":"Technology","link":"https:\/\/www.markwilson.co.uk\/blog\/topic\/technology"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1123,"url":"https:\/\/www.markwilson.co.uk\/blog\/2008\/07\/photoshop-velvia.htm","url_meta":{"origin":4189,"position":1},"title":"Photoshop Velvia","author":"Mark Wilson","date":"Sunday 20 July 2008","format":false,"excerpt":"Back in the days when I used to shoot my photos on film, my preferred slide emulsion was Fujifilm Velvia (RVP). 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File transfer time calculations There are many bandwidth\/file transfer time calculators out there on the 'net but I found this one particularly easy to work with when trying to assess the likely time to sync some data recently... Internet breakout from IaaS Anyone thinking of using\u2026","rel":"","context":"In "Technology"","block_context":{"text":"Technology","link":"https:\/\/www.markwilson.co.uk\/blog\/topic\/technology"},"img":{"alt_text":"Creating an L2TP application in the PlusNet Hub One router firewall","src":"https:\/\/i0.wp.com\/www.markwilson.co.uk\/blog\/images\/plusnet-hub-one-l2tp.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":5543,"url":"https:\/\/www.markwilson.co.uk\/blog\/2015\/04\/lync-becomes-skype-for-business-today-a-quick-round-up-of-what-that-means.htm","url_meta":{"origin":4189,"position":3},"title":"Lync becomes Skype for Business today – a quick round-up of what that means","author":"Mark Wilson","date":"Tuesday 14 April 2015","format":false,"excerpt":"There's been a fair amount of panic\u00a0in some quarters as a colleague\u00a0heard that one of the \"patch Tuesday\" updates will update our\u00a0Lync 2013 clients to\u00a0Skype for Business (which became\u00a0generally available today). That brings a new user experience and potentially confusion for our users (who are only just getting their heads\u2026","rel":"","context":"In "Technology"","block_context":{"text":"Technology","link":"https:\/\/www.markwilson.co.uk\/blog\/topic\/technology"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":8074,"url":"https:\/\/www.markwilson.co.uk\/blog\/2020\/08\/bulk-removing-passwords-from-pdf-documents.htm","url_meta":{"origin":4189,"position":4},"title":"Bulk removing passwords from PDF documents","author":"Mark Wilson","date":"Friday 21 August 2020","format":false,"excerpt":"My payslip and related documents are sent to me in PDF format. To provide some rudimentary protection from interception, they are password protected, though the password is easily obtained by anyone who knows what the system is. Because these are important documents, I store a copy in my personal filing\u2026","rel":"","context":"In "Technology"","block_context":{"text":"Technology","link":"https:\/\/www.markwilson.co.uk\/blog\/topic\/technology"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":4312,"url":"https:\/\/www.markwilson.co.uk\/blog\/2012\/09\/useful-links-september-2012.htm","url_meta":{"origin":4189,"position":5},"title":"Useful Links: September 2012","author":"Mark Wilson","date":"Sunday 30 September 2012","format":false,"excerpt":"A list of items I've come across recently that I found potentially useful, interesting, or just plain funny: Rubular - Ruby regular expression editor and tester (via Kristian Brimble) Classic Shell for Windows - Expose hidden features in modern Windows versions (via Scott Hanselman) Traveline NextBuses - Useful mobile website\u2026","rel":"","context":"In "Technology"","block_context":{"text":"Technology","link":"https:\/\/www.markwilson.co.uk\/blog\/topic\/technology"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/posts\/4189","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/comments?post=4189"}],"version-history":[{"count":11,"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/posts\/4189\/revisions"}],"predecessor-version":[{"id":5293,"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/posts\/4189\/revisions\/5293"}],"wp:attachment":[{"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/media?parent=4189"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/categories?post=4189"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/tags?post=4189"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}