{"id":821,"date":"2016-11-25T17:15:53","date_gmt":"2016-11-25T17:15:53","guid":{"rendered":"http:\/\/learnlearn.uk\/microbit\/?p=821"},"modified":"2016-11-25T17:39:56","modified_gmt":"2016-11-25T17:39:56","slug":"microbit-rgb-led-tutorial","status":"publish","type":"post","link":"https:\/\/learnlearn.uk\/microbit\/2016\/11\/25\/microbit-rgb-led-tutorial\/","title":{"rendered":"Microbit RGB LED Tutorial"},"content":{"rendered":"\n<div class=\"arconix-tabs-horizontal\"><ul class=\"arconix-tabs\"><li data-arconix-icon=\" \" data-arconix-color=\" \" class=\"arconix-tab tab-Introduction\"><a class=\"\" href=\"#tab-Introduction\">Introduction<\/a><\/li>\n<li data-arconix-icon=\" \" data-arconix-color=\" \" class=\"arconix-tab tab-Wiring\"><a class=\"\" href=\"#tab-Wiring\">Wiring<\/a><\/li>\n<li data-arconix-icon=\" \" data-arconix-color=\" \" class=\"arconix-tab tab-Code\"><a class=\"\" href=\"#tab-Code\">Code<\/a><\/li>\n<li data-arconix-icon=\" \" data-arconix-color=\" \" class=\"arconix-tab tab-RGBColors\"><a class=\"\" href=\"#tab-RGBColors\">RGB Colors<\/a><\/li>\n<li data-arconix-icon=\" \" data-arconix-color=\" \" class=\"arconix-tab tab-Challenges\"><a class=\"\" href=\"#tab-Challenges\">Challenges<\/a><\/li><\/ul>\n<div class=\"arconix-panes\"><div class=\"arconix-pane pane-Introduction\">\n<div class=\"arconix-column-two-thirds\">\n<h2>Microbit RGB LED Tutorial<\/h2>\n<p>In this tutorial we will show you how to wire and code an RGB LED using the Microbit. This is a great cheap Microbit project that teachers can do with their students, and it&#8217;s also very educational! It teachers the basics of wiring up external outputs, as well as how RGB colours are made.<\/p>\n<p><strong>You will need:<\/strong><\/p>\n<div class=\"arconix-list\" data-arconix-icon=\"fa-chevron-circle-right\" data-arconix-color=\"black\">\n<ul>\n<li>1 Microbit<\/li>\n<li><a href=\"https:\/\/www.amazon.co.uk\/gp\/product\/B0087YR7UW\/ref=as_li_ss_tl?ie=UTF8&amp;psc=1&amp;linkCode=ll1&amp;tag=mrwestuk-21&amp;linkId=c5e7ed8186f384002e191609c7ca2432\">1 RGB LED<\/a><\/li>\n<li><a href=\"https:\/\/www.amazon.co.uk\/Carbon-Resistor-0-25w-100-100R\/dp\/B004S12JLK\/ref=as_li_ss_tl?ie=UTF8&amp;qid=1480092815&amp;sr=8-1&amp;keywords=100+ohm+resistor&amp;linkCode=ll1&amp;tag=mrwestuk-21&amp;linkId=39a763f432879a09492ec6a61bb3ab02\">3 x 100 Ohm Resistors<\/a><\/li>\n<li><a href=\"https:\/\/www.amazon.co.uk\/SODIAL-Female-Solderless-Flexible-Breadboard\/dp\/B00HUH9GOC\/ref=as_li_ss_tl?ie=UTF8&amp;qid=1480092791&amp;sr=8-3&amp;keywords=female+female+jumper+wires&amp;linkCode=ll1&amp;tag=mrwestuk-21&amp;linkId=5d77be6b3f63fd429b7805a063200d09\">3 Female to female jumper \u00a0wires<\/a><\/li>\n<li><a href=\"https:\/\/www.amazon.co.uk\/Colorful-Double-Ended-Alligator-Jumper\/dp\/B00H56AJSK\/ref=as_li_ss_tl?ie=UTF8&amp;qid=1480092748&amp;sr=8-2&amp;keywords=crocodile+clips&amp;linkCode=ll1&amp;tag=mrwestuk-21&amp;linkId=f33445a496c0c197abc790f05f3b6ff7\">3 crocodile clip wires.<\/a><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div class=\"arconix-column-one-third\">\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone wp-image-824 size-medium\" src=\"https:\/\/learnlearn.uk\/microbit\/wp-content\/uploads\/sites\/2\/2016\/11\/rgb-led-300x200.jpg\" alt=\"Microbit RGB LED Tutorial\" width=\"300\" height=\"200\" srcset=\"https:\/\/learnlearn.uk\/microbit\/wp-content\/uploads\/sites\/2\/2016\/11\/rgb-led-300x200.jpg 300w, https:\/\/learnlearn.uk\/microbit\/wp-content\/uploads\/sites\/2\/2016\/11\/rgb-led-768x512.jpg 768w, https:\/\/learnlearn.uk\/microbit\/wp-content\/uploads\/sites\/2\/2016\/11\/rgb-led-600x400.jpg 600w, https:\/\/learnlearn.uk\/microbit\/wp-content\/uploads\/sites\/2\/2016\/11\/rgb-led.jpg 800w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<p><a href=\"https:\/\/commons.wikimedia.org\/wiki\/File:RGB-Led-projection.jpg\">Image source &#8211; Wikipedia<\/a><\/p>\n<\/div>\n<\/div>\n<div class=\"arconix-pane pane-Wiring\">\n<div class=\"arconix-column-one-half\">\n<p><strong>Wiring Diagram<\/strong><\/p>\n<div id=\"attachment_819\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"http:\/\/learnlearn.uk\/microbit\/wp-content\/uploads\/sites\/2\/2016\/07\/RGB-LED-Wiring-1.jpg\"><img aria-describedby=\"caption-attachment-819\" decoding=\"async\" loading=\"lazy\" class=\"size-medium wp-image-819\" src=\"https:\/\/learnlearn.uk\/microbit\/wp-content\/uploads\/sites\/2\/2016\/07\/RGB-LED-Wiring-1-300x185.jpg\" alt=\"Click to enlarge\" width=\"300\" height=\"185\" srcset=\"https:\/\/learnlearn.uk\/microbit\/wp-content\/uploads\/sites\/2\/2016\/07\/RGB-LED-Wiring-1-300x185.jpg 300w, https:\/\/learnlearn.uk\/microbit\/wp-content\/uploads\/sites\/2\/2016\/07\/RGB-LED-Wiring-1-768x474.jpg 768w, https:\/\/learnlearn.uk\/microbit\/wp-content\/uploads\/sites\/2\/2016\/07\/RGB-LED-Wiring-1-1024x632.jpg 1024w, https:\/\/learnlearn.uk\/microbit\/wp-content\/uploads\/sites\/2\/2016\/07\/RGB-LED-Wiring-1-600x370.jpg 600w, https:\/\/learnlearn.uk\/microbit\/wp-content\/uploads\/sites\/2\/2016\/07\/RGB-LED-Wiring-1.jpg 1158w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-819\" class=\"wp-caption-text\">Click to enlarge<\/p><\/div>\n<p>Wiring up the LED is nice is nice and simple. Each of the outputs run from the Microbit, \u00a0through a 100 ohm resistor and on to LED.<\/p>\n<\/div>\n<div class=\"arconix-column-one-half\">\n<p><strong>Wiring Example<\/strong><\/p>\n<div id=\"attachment_822\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"http:\/\/learnlearn.uk\/microbit\/wp-content\/uploads\/sites\/2\/2016\/11\/IMG_20161124_133645.jpg\"><img aria-describedby=\"caption-attachment-822\" decoding=\"async\" loading=\"lazy\" class=\"size-medium wp-image-822\" src=\"https:\/\/learnlearn.uk\/microbit\/wp-content\/uploads\/sites\/2\/2016\/11\/IMG_20161124_133645-300x222.jpg\" alt=\"Click to enlarge\" width=\"300\" height=\"222\" srcset=\"https:\/\/learnlearn.uk\/microbit\/wp-content\/uploads\/sites\/2\/2016\/11\/IMG_20161124_133645-300x222.jpg 300w, https:\/\/learnlearn.uk\/microbit\/wp-content\/uploads\/sites\/2\/2016\/11\/IMG_20161124_133645-768x568.jpg 768w, https:\/\/learnlearn.uk\/microbit\/wp-content\/uploads\/sites\/2\/2016\/11\/IMG_20161124_133645-1024x758.jpg 1024w, https:\/\/learnlearn.uk\/microbit\/wp-content\/uploads\/sites\/2\/2016\/11\/IMG_20161124_133645-600x444.jpg 600w, https:\/\/learnlearn.uk\/microbit\/wp-content\/uploads\/sites\/2\/2016\/11\/IMG_20161124_133645.jpg 1200w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-822\" class=\"wp-caption-text\">Click to enlarge<\/p><\/div>\n<\/div>\n<\/div>\n<div class=\"arconix-pane pane-Code\">\n<div class=\"arconix-column-one-half\">\n<p><strong>Test code 1 &#8211; 3 alternative colours<\/strong><\/p>\n<div id=\"attachment_823\" style=\"width: 207px\" class=\"wp-caption alignnone\"><a href=\"http:\/\/learnlearn.uk\/microbit\/wp-content\/uploads\/sites\/2\/2016\/11\/rgb-LED-test-code-1-alternating-LEDs.png\"><img aria-describedby=\"caption-attachment-823\" decoding=\"async\" loading=\"lazy\" class=\"size-medium wp-image-823\" src=\"https:\/\/learnlearn.uk\/microbit\/wp-content\/uploads\/sites\/2\/2016\/11\/rgb-LED-test-code-1-alternating-LEDs-197x300.png\" alt=\"Click to enlarge\" width=\"197\" height=\"300\" srcset=\"https:\/\/learnlearn.uk\/microbit\/wp-content\/uploads\/sites\/2\/2016\/11\/rgb-LED-test-code-1-alternating-LEDs-197x300.png 197w, https:\/\/learnlearn.uk\/microbit\/wp-content\/uploads\/sites\/2\/2016\/11\/rgb-LED-test-code-1-alternating-LEDs.png 493w\" sizes=\"(max-width: 197px) 100vw, 197px\" \/><\/a><p id=\"caption-attachment-823\" class=\"wp-caption-text\">Click to enlarge<\/p><\/div>\n<p>The simplest way to test if your setup is working is to simply turn each output on one by one.<\/p>\n<\/div>\n<div class=\"arconix-column-one-half\">\n<p><strong>Test code 2 &#8211; composite colour<\/strong><\/p>\n<div id=\"attachment_825\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"http:\/\/learnlearn.uk\/microbit\/wp-content\/uploads\/sites\/2\/2016\/11\/rgb-pink.png\"><img aria-describedby=\"caption-attachment-825\" decoding=\"async\" loading=\"lazy\" class=\"wp-image-825 size-medium\" src=\"https:\/\/learnlearn.uk\/microbit\/wp-content\/uploads\/sites\/2\/2016\/11\/rgb-pink-300x184.png\" alt=\"rgb-pink\" width=\"300\" height=\"184\" srcset=\"https:\/\/learnlearn.uk\/microbit\/wp-content\/uploads\/sites\/2\/2016\/11\/rgb-pink-300x184.png 300w, https:\/\/learnlearn.uk\/microbit\/wp-content\/uploads\/sites\/2\/2016\/11\/rgb-pink.png 442w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-825\" class=\"wp-caption-text\">Click to enlarge<\/p><\/div>\n<p>What about combining colors? Well, this is where the RGB comes in to play.<\/p>\n<p>A simple example is Red + Blue , which makes a purpley pink colour.<\/p>\n<p>Here we simply turn 2 outputs on at the same time!<\/p>\n<\/div>\n<\/div>\n<div class=\"arconix-pane pane-RGBColors\">\n<div class=\"arconix-column-two-thirds\">\n<p><strong>RGB Color Generator<\/strong><\/p>\n<p>RGB colors are generated by a mix of three elements, with the brightness of each(luminosity) varying from 0 to 100%.<\/p>\n<p>Have a go at moving the sliders below to see what colours you can generate.<br \/>\n<iframe loading=\"lazy\" style=\"overflow: :hidden;\" src=\"https:\/\/www.easycalculation.com\/colorconverter\/embedded_rgb-color-converter.php\" width=\"100%\" height=\"400\" frameborder=\"0\" scrolling=\"no\"><\/iframe><\/p>\n<\/div>\n<div class=\"arconix-column-one-third\">\n<img decoding=\"async\" loading=\"lazy\" class=\" wp-image-826 alignnone\" src=\"https:\/\/learnlearn.uk\/microbit\/wp-content\/uploads\/sites\/2\/2016\/11\/rgb-colour-circles-300x300.png\" alt=\"rgb-colour-circles\" width=\"235\" height=\"235\" srcset=\"https:\/\/learnlearn.uk\/microbit\/wp-content\/uploads\/sites\/2\/2016\/11\/rgb-colour-circles-300x300.png 300w, https:\/\/learnlearn.uk\/microbit\/wp-content\/uploads\/sites\/2\/2016\/11\/rgb-colour-circles-150x150.png 150w, https:\/\/learnlearn.uk\/microbit\/wp-content\/uploads\/sites\/2\/2016\/11\/rgb-colour-circles.png 400w\" sizes=\"(max-width: 235px) 100vw, 235px\" \/><\/p>\n<\/div>\n<\/div>\n<div class=\"arconix-pane pane-Challenges\">\n<h3>Microbit RGB LED Tutorial Challenges<\/h3>\n<p><strong>Challenge 1 &#8211; Traffic Light LED<\/strong><\/p>\n<p>Write a script that mimics the functioning of a traffic light, triggered when you press a button on the Microbit.<\/p>\n<p><strong>Challenge 2 &#8211; Random colour LED<\/strong><\/p>\n<p>Write a script that outputs a random colour from the LED<\/p>\n<p><strong>Challenge 3 &#8211; Pulsing LED<\/strong><\/p>\n<p>Write a script that allows the LED to pulse on and off<\/p>\n<p><strong>Challenge 4 &#8211; Blended colours<\/strong><\/p>\n<p>Write a script that blends slowly from one green to blue and back again.<\/p>\n<\/div><\/div><\/div>\n\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":824,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":""},"categories":[2],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Microbit RGB LED Tutorial - Microbit - 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