{"id":242,"date":"2015-12-21T00:01:32","date_gmt":"2015-12-20T22:01:32","guid":{"rendered":"http:\/\/iot.fkainka.de\/?p=242"},"modified":"2018-10-24T16:04:07","modified_gmt":"2018-10-24T15:04:07","slug":"day-21","status":"publish","type":"post","link":"https:\/\/iot.fkainka.de\/en\/day-21","title":{"rendered":"Day 21: Alarm system"},"content":{"rendered":"

Today’s project is an alarm system with which you can, for example, check whether someone opens a drawer without permission. There is a continuous check for whether the connected light sensor is exposed to too much light. If this is the case, an alarm signal will sound and a message will be sent via Twitter.<\/p>\n

\"Lichtsensor<\/a>

Lightsensor on A0 and Piezo on D8<\/p><\/div>\n

Behind today’s door, there is a Piezo speaker that is used as alarm signal encoder. The structure of today’s experiment is shown in the figure.<\/p>\n

The program:\u00a0Day21_ThinkSpeakAlarm<\/a><\/strong><\/p>\n

Today’s subject is, among others, the Twitter App of the ThingSpeak page. Click Apps and then ThingTweet. By clicking the link TwitterAccount and entering your access data, you will connect the two services. If you have no Twitter account yet, it will pay off to create a test account for processing the advent calendar. After Twitter has been successfully linked to ThingSpeak, you can enter the API key under Apps-ThingTweet<\/p>\n

after the item #define TwitterKEY in today’s program. The program now continually reviews whether the measured brightness increases over 500. If this is the case, a Twitter message is sent and the alarm is sounded until the brightness drops below 500 again. The currently measured brightness values can be tracked via the serial monitor. For the first attempts, I recommend covering the light sensor to keep the alarm from being triggered early.<\/p>","protected":false},"excerpt":{"rendered":"

Today’s project is an alarm system with which you can, for example, check whether someone opens a drawer without permission. There is a continuous check for whether the connected light sensor is exposed to too much light. If this is…
Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":244,"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":[3,26,311],"tags":[16,20,19,22,106],"jetpack_publicize_connections":[],"yoast_head":"\nDay 21: Alarm system - 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\/day-21\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Day 21: Alarm system - Internet of Things with the NanoESP\" \/>\n<meta property=\"og:description\" content=\"Today’s project is an alarm system with which you can, for example, check whether someone opens a drawer without permission. There is a continuous check for whether the connected light sensor is exposed to too much light. If this is...Read more\" \/>\n<meta property=\"og:url\" content=\"https:\/\/iot.fkainka.de\/day-21\" \/>\n<meta property=\"og:site_name\" content=\"Internet of Things with the NanoESP\" \/>\n<meta property=\"article:published_time\" content=\"2015-12-20T22:01:32+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2018-10-24T15:04:07+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/iot.fkainka.de\/wp-content\/uploads\/2015\/09\/Day21-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1106\" \/>\n\t<meta property=\"og:image:height\" content=\"720\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"fk\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"fk\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. 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\":\"WebPage\",\"@id\":\"https:\/\/iot.fkainka.de\/day-21\",\"url\":\"https:\/\/iot.fkainka.de\/day-21\",\"name\":\"Day 21: Alarm system - Internet of Things with the NanoESP\",\"isPartOf\":{\"@id\":\"https:\/\/iot.fkainka.de\/#website\"},\"datePublished\":\"2015-12-20T22:01:32+00:00\",\"dateModified\":\"2018-10-24T15:04:07+00:00\",\"author\":{\"@id\":\"https:\/\/iot.fkainka.de\/#\/schema\/person\/d3205fdf2649027fc35e240d4f8b285a\"},\"breadcrumb\":{\"@id\":\"https:\/\/iot.fkainka.de\/day-21#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/iot.fkainka.de\/day-21\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/iot.fkainka.de\/day-21#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/iot.fkainka.de\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Tag 21: Twitter Alarmanlage\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/iot.fkainka.de\/#website\",\"url\":\"https:\/\/iot.fkainka.de\/\",\"name\":\"Internet of Things with the NanoESP\",\"description\":\"The webpage for the Arduino compatible WiFi-Board\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/iot.fkainka.de\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/iot.fkainka.de\/#\/schema\/person\/d3205fdf2649027fc35e240d4f8b285a\",\"name\":\"fk\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/iot.fkainka.de\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/141cf958a831e66efabf9674e117e8d9?s=96&d=identicon&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/141cf958a831e66efabf9674e117e8d9?s=96&d=identicon&r=g\",\"caption\":\"fk\"},\"url\":\"https:\/\/iot.fkainka.de\/en\/author\/fk\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Day 21: Alarm system - Internet of Things with the NanoESP","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/iot.fkainka.de\/day-21","og_locale":"en_US","og_type":"article","og_title":"Day 21: Alarm system - Internet of Things with the NanoESP","og_description":"Today’s project is an alarm system with which you can, for example, check whether someone opens a drawer without permission. There is a continuous check for whether the connected light sensor is exposed to too much light. If this is...Read more","og_url":"https:\/\/iot.fkainka.de\/day-21","og_site_name":"Internet of Things with the NanoESP","article_published_time":"2015-12-20T22:01:32+00:00","article_modified_time":"2018-10-24T15:04:07+00:00","og_image":[{"width":1106,"height":720,"url":"https:\/\/iot.fkainka.de\/wp-content\/uploads\/2015\/09\/Day21-1.jpg","type":"image\/jpeg"}],"author":"fk","twitter_card":"summary_large_image","twitter_misc":{"Written by":"fk","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/iot.fkainka.de\/day-21","url":"https:\/\/iot.fkainka.de\/day-21","name":"Day 21: Alarm system - Internet of Things with the NanoESP","isPartOf":{"@id":"https:\/\/iot.fkainka.de\/#website"},"datePublished":"2015-12-20T22:01:32+00:00","dateModified":"2018-10-24T15:04:07+00:00","author":{"@id":"https:\/\/iot.fkainka.de\/#\/schema\/person\/d3205fdf2649027fc35e240d4f8b285a"},"breadcrumb":{"@id":"https:\/\/iot.fkainka.de\/day-21#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/iot.fkainka.de\/day-21"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/iot.fkainka.de\/day-21#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/iot.fkainka.de\/"},{"@type":"ListItem","position":2,"name":"Tag 21: Twitter Alarmanlage"}]},{"@type":"WebSite","@id":"https:\/\/iot.fkainka.de\/#website","url":"https:\/\/iot.fkainka.de\/","name":"Internet of Things with the NanoESP","description":"The webpage for the Arduino compatible WiFi-Board","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/iot.fkainka.de\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/iot.fkainka.de\/#\/schema\/person\/d3205fdf2649027fc35e240d4f8b285a","name":"fk","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/iot.fkainka.de\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/141cf958a831e66efabf9674e117e8d9?s=96&d=identicon&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/141cf958a831e66efabf9674e117e8d9?s=96&d=identicon&r=g","caption":"fk"},"url":"https:\/\/iot.fkainka.de\/en\/author\/fk"}]}},"jetpack_featured_media_url":"https:\/\/iot.fkainka.de\/wp-content\/uploads\/2015\/09\/Day21-1.jpg","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p6McI0-3U","_links":{"self":[{"href":"https:\/\/iot.fkainka.de\/en\/wp-json\/wp\/v2\/posts\/242"}],"collection":[{"href":"https:\/\/iot.fkainka.de\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/iot.fkainka.de\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/iot.fkainka.de\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/iot.fkainka.de\/en\/wp-json\/wp\/v2\/comments?post=242"}],"version-history":[{"count":4,"href":"https:\/\/iot.fkainka.de\/en\/wp-json\/wp\/v2\/posts\/242\/revisions"}],"predecessor-version":[{"id":601,"href":"https:\/\/iot.fkainka.de\/en\/wp-json\/wp\/v2\/posts\/242\/revisions\/601"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/iot.fkainka.de\/en\/wp-json\/wp\/v2\/media\/244"}],"wp:attachment":[{"href":"https:\/\/iot.fkainka.de\/en\/wp-json\/wp\/v2\/media?parent=242"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/iot.fkainka.de\/en\/wp-json\/wp\/v2\/categories?post=242"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/iot.fkainka.de\/en\/wp-json\/wp\/v2\/tags?post=242"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}