{"id":2803,"date":"2025-11-10T16:05:02","date_gmt":"2025-11-10T16:05:02","guid":{"rendered":"https:\/\/junglefreedomfighters.com\/?p=2803"},"modified":"2025-11-10T16:05:03","modified_gmt":"2025-11-10T16:05:03","slug":"433mhz-transmitter","status":"publish","type":"post","link":"https:\/\/junglefreedomfighters.com\/?p=2803","title":{"rendered":"433MHz transmitter"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Every morning and every night I have to press a button on the remote control to open\/close the blinds in my kitchen.  In my constant efforts to have to do less things each day I feel the need to remove these two things.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Enter stage left a 433MHz transmitter that can be connected to [ you guessed it ] a Raspberry Pi and also my Flipper Zero to sniff the signal to send.<\/p>\n\n\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;6a81ee6c5b0f2&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"6a81ee6c5b0f2\" class=\"wp-block-image size-full wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/junglefreedomfighters.com\/wp-content\/uploads\/2025\/11\/PXL_20251024_083630255.PORTRAIT.jpg\" alt=\"\" class=\"wp-image-2804\" srcset=\"https:\/\/junglefreedomfighters.com\/wp-content\/uploads\/2025\/11\/PXL_20251024_083630255.PORTRAIT.jpg 1200w, https:\/\/junglefreedomfighters.com\/wp-content\/uploads\/2025\/11\/PXL_20251024_083630255.PORTRAIT-300x169.jpg 300w, https:\/\/junglefreedomfighters.com\/wp-content\/uploads\/2025\/11\/PXL_20251024_083630255.PORTRAIT-768x432.jpg 768w\" sizes=\"auto, (max-width: 767px) 89vw, (max-width: 1000px) 54vw, (max-width: 1071px) 543px, 580px\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\tdata-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.thisImage.buttonRight\"\n\t\t\tdata-wp-style--top=\"state.thisImage.buttonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Sniffing the signal was the easy bit.  I now have the hex code, and therefore the binary signal, to send the blinds up and down.  Unfortunately it&#8217;s proving a bit tricky to get my Pi and transmitter to send a matching signal.  <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The Flipper Zero shows that it is receiving a radio transmission but it just doesn&#8217;t decode it correctly.  It&#8217;s either that I don&#8217;t have the correct high\/low timings for the signals&#8230;or that when I first hooked up the transmitter I attached the 5v line to the data input for the transmitter.  Oooops.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">I&#8217;ll keep beavering away and keep you, my dear single reader with the long hair and a talent for music, informed.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Every morning and every night I have to press a button on the remote control to open\/close the blinds in my kitchen. In my constant efforts to have to do less things each day I feel the need to remove these two things. Enter stage left a 433MHz transmitter that can be connected to [ &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/junglefreedomfighters.com\/?p=2803\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;433MHz transmitter&#8221;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2803","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/junglefreedomfighters.com\/index.php?rest_route=\/wp\/v2\/posts\/2803","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/junglefreedomfighters.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/junglefreedomfighters.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/junglefreedomfighters.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/junglefreedomfighters.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2803"}],"version-history":[{"count":1,"href":"https:\/\/junglefreedomfighters.com\/index.php?rest_route=\/wp\/v2\/posts\/2803\/revisions"}],"predecessor-version":[{"id":2805,"href":"https:\/\/junglefreedomfighters.com\/index.php?rest_route=\/wp\/v2\/posts\/2803\/revisions\/2805"}],"wp:attachment":[{"href":"https:\/\/junglefreedomfighters.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2803"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/junglefreedomfighters.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2803"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/junglefreedomfighters.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2803"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}