{"id":2583,"date":"2018-12-22T00:00:26","date_gmt":"2018-12-21T23:00:26","guid":{"rendered":"https:\/\/iot.fkainka.de\/?p=2583"},"modified":"2018-11-21T17:14:55","modified_gmt":"2018-11-21T16:14:55","slug":"day22-2018","status":"publish","type":"post","link":"https:\/\/iot.fkainka.de\/en\/day22-2018","title":{"rendered":"Day 22: Climate Guard"},"content":{"rendered":"<p>The door of day 21 reveals again a sensor, which we will use to measure the humidity level present. With the following circuit we will build a comprehensive indoor climate monitor.<\/p>\n<div id=\"attachment_2584\" style=\"width: 461px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/iot.fkainka.de\/wp-content\/uploads\/2018\/11\/Day22_Clima_Steckplatine.png\"><img aria-describedby=\"caption-attachment-2584\" decoding=\"async\" loading=\"lazy\" class=\" wp-image-2584\" src=\"https:\/\/iot.fkainka.de\/wp-content\/uploads\/2018\/11\/Day22_Clima_Steckplatine-798x1024.png\" alt=\"Die Schaltung des Raumklimaw\u00e4chters\" width=\"451\" height=\"579\" data-id=\"2584\" srcset=\"https:\/\/iot.fkainka.de\/wp-content\/uploads\/2018\/11\/Day22_Clima_Steckplatine-798x1024.png 798w, https:\/\/iot.fkainka.de\/wp-content\/uploads\/2018\/11\/Day22_Clima_Steckplatine-234x300.png 234w, https:\/\/iot.fkainka.de\/wp-content\/uploads\/2018\/11\/Day22_Clima_Steckplatine-768x986.png 768w, https:\/\/iot.fkainka.de\/wp-content\/uploads\/2018\/11\/Day22_Clima_Steckplatine.png 879w\" sizes=\"(max-width: 451px) 100vw, 451px\" \/><\/a><p id=\"caption-attachment-2584\" class=\"wp-caption-text\">The indoor climate monitor circuit<\/p><\/div>\n<p>Our experiment today uses three sensors: the temperature sensor (NTC), the light sensor (photo transistor) and the humidity sensor. Altogether they deliver a real good impression of the current climate situation in a room. Let\u2019s start the program of today.<\/p>\n<p>The program measures all of the values e very 30 seconds and sends them via MQTT, and you will receive something like this:<\/p>\n<p><strong>{&#8220;cmd&#8221;:&#8221;get_hum_state&#8221;,&#8221;Light&#8221;:3903,&#8221;Temp&#8221;:368,&#8221;HUMIDITY&#8221;:45}<\/strong><\/p>\n<p>Copy the flow of today into your Node-RED environment, but remember that you need to adjust your personal topic and disable previous flows. Then on the GUI page you can view the measured values. A function node will also today convert the temperature values accordingly so that you are able to read them. The two potentiometers are used to achieve a more precise calibration, because today you can adjust temperature and ambient brightness values.<\/p>\n<div id=\"attachment_2585\" style=\"width: 685px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/iot.fkainka.de\/wp-content\/uploads\/2018\/11\/T22Flow.png\"><img aria-describedby=\"caption-attachment-2585\" decoding=\"async\" loading=\"lazy\" class=\" wp-image-2585\" src=\"https:\/\/iot.fkainka.de\/wp-content\/uploads\/2018\/11\/T22Flow.png\" alt=\"Der Flow zur Langzeitmessung\" width=\"675\" height=\"250\" data-id=\"2585\" srcset=\"https:\/\/iot.fkainka.de\/wp-content\/uploads\/2018\/11\/T22Flow.png 955w, https:\/\/iot.fkainka.de\/wp-content\/uploads\/2018\/11\/T22Flow-300x111.png 300w, https:\/\/iot.fkainka.de\/wp-content\/uploads\/2018\/11\/T22Flow-768x285.png 768w\" sizes=\"(max-width: 675px) 100vw, 675px\" \/><\/a><p id=\"caption-attachment-2585\" class=\"wp-caption-text\">The flow for the long-term measurement<\/p><\/div>\n<p><iframe style=\"border: none; width: 100%;\" src=\"https:\/\/pastebin.com\/embed_iframe\/SeSLNAP5\"><\/iframe><\/p>\n<p>But we also have an additional feature. Every five minutes, the program saves the currently measured values\u00a0 into a file. This is called climadata.txt and you will find it usually in the directory where Node-RED runs. In my case, this was:<\/p>\n<p><strong>C:\\Users\\[USERNAME]<\/strong><\/p>\n<p><strong>[USERNAME]<\/strong> is your Windows user name. But you could also customize the file path in the node. Data is stored in CSV\u00a0 (<strong>comma separated values<\/strong>) format, whereby all values\u00a0 are separated by a comma. It is thus very easy to import the data into Excel and evaluate the spreadsheet. The evaluation of the longterm measurement is very easy.<\/p>","protected":false},"excerpt":{"rendered":"<p>The door of day 21 reveals again a sensor, which we will use to measure the humidity level present. With the following circuit we will build a comprehensive indoor climate monitor. Our experiment today uses three sensors: the temperature sensor&#8230;<br \/><a class=\"read-more-button\" href=\"https:\/\/iot.fkainka.de\/en\/day22-2018\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":2585,"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":[315,312,313],"tags":[],"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 22: Climate Guard - 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\/day22-2018\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Day 22: Climate Guard - Internet of Things with the NanoESP\" \/>\n<meta property=\"og:description\" content=\"The door of day 21 reveals again a sensor, which we will use to measure the humidity level present. 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