{"id":1381,"date":"2016-12-16T00:01:54","date_gmt":"2016-12-15T23:01:54","guid":{"rendered":"http:\/\/iot.fkainka.de\/?p=1381"},"modified":"2018-10-24T16:05:11","modified_gmt":"2018-10-24T15:05:11","slug":"day16-2016","status":"publish","type":"post","link":"https:\/\/iot.fkainka.de\/en\/day16-2016","title":{"rendered":"Day 16: A web server piano"},"content":{"rendered":"<p>Behind today&#8217;s door is a piezo sound transducer. It&#8217;s possible to generate sounds with it, which will become clear in today&#8217;s test. Today you&#8217;re building a type of piano that can be used via a website. See the following picture for the layout:<\/p>\n<div id=\"attachment_1382\" style=\"width: 626px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/iot.fkainka.de\/wp-content\/uploads\/2016\/09\/Day16_Piezzo_Steckplatine.jpg\"><img aria-describedby=\"caption-attachment-1382\" decoding=\"async\" loading=\"lazy\" class=\"wp-image-1382 size-large\" src=\"http:\/\/iot.fkainka.de\/wp-content\/uploads\/2016\/09\/Day16_Piezzo_Steckplatine-1024x667.jpg\" alt=\"Der Piezzo richtig angeschlossen\" width=\"616\" height=\"401\" srcset=\"https:\/\/iot.fkainka.de\/wp-content\/uploads\/2016\/09\/Day16_Piezzo_Steckplatine-1024x667.jpg 1024w, https:\/\/iot.fkainka.de\/wp-content\/uploads\/2016\/09\/Day16_Piezzo_Steckplatine-300x195.jpg 300w, https:\/\/iot.fkainka.de\/wp-content\/uploads\/2016\/09\/Day16_Piezzo_Steckplatine-768x500.jpg 768w, https:\/\/iot.fkainka.de\/wp-content\/uploads\/2016\/09\/Day16_Piezzo_Steckplatine-972x633.jpg 972w, https:\/\/iot.fkainka.de\/wp-content\/uploads\/2016\/09\/Day16_Piezzo_Steckplatine.jpg 1106w\" sizes=\"(max-width: 616px) 100vw, 616px\" \/><\/a><p id=\"caption-attachment-1382\" class=\"wp-caption-text\">The correct connection of the piezo sound transducer<\/p><\/div>\n<p><iframe loading=\"lazy\" style=\"height: 400px; width: 100%; margin: 10px 0;\" src=\"https:\/\/create.arduino.cc\/editor\/FKainka\/aee2004f-8f0c-42fe-b8dd-d4b51ad5006d\/preview?embed\" width=\"300\" height=\"150\" frameborder=\"0\"><\/iframe><br \/>\nWhen you&#8217;ve uploaded the programme, you can open the board&#8217;s website using the IP address in the browser. Today it doesn&#8217;t matter whether you connect to the board through your home network or the access point, since no external data is loaded. On the website you find a few buttons with which you can trigger a tone when you press them. The transfer is really fast. However, you should give the board a quarter of a second to play the tone before you send another tone. Otherwise, the note sounds very strange. But try to play one of the classics of the beginner songs: All My Ducklings. The notes are:<\/p>\n<p>C D E F G G A A A A G A A A A G F F F F E E G G G G C<\/p>\n<p><div id=\"attachment_1383\" style=\"width: 409px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/iot.fkainka.de\/wp-content\/uploads\/2016\/09\/Day16_2.jpg\"><img aria-describedby=\"caption-attachment-1383\" decoding=\"async\" loading=\"lazy\" class=\"wp-image-1383 size-full\" src=\"http:\/\/iot.fkainka.de\/wp-content\/uploads\/2016\/09\/Day16_2.jpg\" alt=\"Die Piano Webseite\" width=\"399\" height=\"198\" srcset=\"https:\/\/iot.fkainka.de\/wp-content\/uploads\/2016\/09\/Day16_2.jpg 399w, https:\/\/iot.fkainka.de\/wp-content\/uploads\/2016\/09\/Day16_2-300x149.jpg 300w\" sizes=\"(max-width: 399px) 100vw, 399px\" \/><\/a><p id=\"caption-attachment-1383\" class=\"wp-caption-text\">The piano website<\/p><\/div><\/p>","protected":false},"excerpt":{"rendered":"<p>Behind today&#8217;s door is a piezo sound transducer. It&#8217;s possible to generate sounds with it, which will become clear in today&#8217;s test. Today you&#8217;re building a type of piano that can be used via a website. See the following picture&#8230;<br \/><a class=\"read-more-button\" href=\"https:\/\/iot.fkainka.de\/en\/day16-2016\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":1382,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","footnotes":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[123,124,311],"tags":[20,12],"jetpack_publicize_connections":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Day 16: A web server piano - Internet of Things with the NanoESP<\/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:\/\/iot.fkainka.de\/en\/day16-2016\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Day 16: A web server piano - Internet of Things with the NanoESP\" \/>\n<meta property=\"og:description\" content=\"Behind today&#8217;s door is a piezo sound transducer. 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