{"id":124646,"date":"2024-11-11T15:56:03","date_gmt":"2024-11-11T08:56:03","guid":{"rendered":"https:\/\/hotvideos24.online\/?p=124646"},"modified":"2024-11-11T15:56:03","modified_gmt":"2024-11-11T08:56:03","slug":"cheap-sensor-changes-personality-hackaday","status":"publish","type":"post","link":"https:\/\/hotvideos24.online\/?p=124646","title":{"rendered":"Cheap Sensor Changes Personality | Hackaday"},"content":{"rendered":"<p> <script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-3711241968723425\"\r\n     crossorigin=\"anonymous\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-layout-key=\"-fb+5w+4e-db+86\"\r\n     data-ad-client=\"ca-pub-3711241968723425\"\r\n     data-ad-slot=\"7910942971\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><br \/>\n<\/p>\n<div itemprop=\"articleBody\">\n<p>If you want to add humidity and temperature sensors to your home automation sensor, you can \u2014 like [Maker\u2019s Fun Duck] did \u2014 buy some <a href=\"https:\/\/www.youtube.com\/watch?v=AD2KduDTjf8\" target=\"_blank\" rel=\"noopener\">generic ones for about a buck<\/a>. For a dollar, you get a little square LCD with sensors and a button. You even get the battery. Can you reprogram the firmware to bend it to your will? As [Duck] shows in the video, you can.<\/p>\n<p>The device advertises some custom BLE services, but [Duck] didn\u2019t want to use the vendor\u2019s phone app, so he cracked the case open. Inside was a microcontroller with Bluetooth, an LCD driver, a sensor IC, and very little else.<\/p>\n<p>The processor is an ARM Cortex M0, a PHY6222 with very low power consumption. The LCD is a very cheap panel with no drivers onboard. All the drive electronics are on the PCB. The sensor is a CHT8305C which uses I2C.<\/p>\n<p>Luckily, the PHY6222 has a publically available SDK with English documentation. The PCB has two sets of UART pads and it is possible to flash the chip via one of the UARTs.<\/p>\n<p>Eventually, [Duck] put a custom firmware on the box, but we were intrigued by the idea that for a buck you could get a little low-power ARM module with an LCD and a sensor. It seems like you could do more with this, although we are sure the LCD is not very general purpose, surely this little box could act as a panel meter, a countdown timer, or lots of other things with some custom firmware.<\/p>\n<p>These are, of course, knock offs of the slightly more expensive Xiaomi sensors, and those are <a href=\"https:\/\/hackaday.com\/2023\/11\/29\/converting-bluetooth-sensors-to-zigbee\/\">flashable<\/a>, too. We aren\u2019t sure how accurate either sensor is, but <a href=\"https:\/\/hackaday.com\/2019\/04\/16\/picking-the-right-sensors-for-home-automation\/\">humidity measurement<\/a> is a complex topic.<\/p>\n<p><iframe loading=\"lazy\" title=\"Custom firmware on cheap Chinese Bluetooth LCD temperature - humidity sensors for Home Assistant\" width=\"1170\" height=\"658\" src=\"https:\/\/www.youtube.com\/embed\/AD2KduDTjf8?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<\/p><\/div>\n<p><script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-3711241968723425\"\r\n     crossorigin=\"anonymous\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-layout-key=\"-fb+5w+4e-db+86\"\r\n     data-ad-client=\"ca-pub-3711241968723425\"\r\n     data-ad-slot=\"7910942971\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><br \/>\n<br \/><div data-type=\"_mgwidget\" data-widget-id=\"1660802\">\r\n<\/div>\r\n<script>(function(w,q){w[q]=w[q]||[];w[q].push([\"_mgc.load\"])})(window,\"_mgq\");\r\n<\/script>\r\n<br \/>\n<br \/><a href=\"https:\/\/hackaday.com\/2024\/11\/10\/cheap-sensor-changes-personality\/\">Source link <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>If you want to add humidity and temperature sensors to your home automation sensor, you can \u2014 like [Maker\u2019s Fun Duck] did \u2014 buy some generic ones for about a &hellip; <a href=\"https:\/\/hotvideos24.online\/?p=124646\" class=\"more-link\">Read More<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8630],"tags":[],"class_list":["post-124646","post","type-post","status-publish","format-standard","hentry","category-technology","entry"],"_links":{"self":[{"href":"https:\/\/hotvideos24.online\/index.php?rest_route=\/wp\/v2\/posts\/124646","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hotvideos24.online\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hotvideos24.online\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hotvideos24.online\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/hotvideos24.online\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=124646"}],"version-history":[{"count":0,"href":"https:\/\/hotvideos24.online\/index.php?rest_route=\/wp\/v2\/posts\/124646\/revisions"}],"wp:attachment":[{"href":"https:\/\/hotvideos24.online\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=124646"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hotvideos24.online\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=124646"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hotvideos24.online\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=124646"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}