{"id":524,"date":"2019-11-11T09:59:00","date_gmt":"2019-11-11T09:59:00","guid":{"rendered":"https:\/\/copperfiction.com\/?p=524"},"modified":"2026-04-09T21:48:20","modified_gmt":"2026-04-09T21:48:20","slug":"gateway-custom-rf-868mhz-to-cellular","status":"publish","type":"post","link":"https:\/\/copperfiction.com\/index.php\/2019\/11\/11\/gateway-custom-rf-868mhz-to-cellular\/","title":{"rendered":"[012] CUSTOM 868 MHz TO CELLULAR GATEWAY"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"900\" height=\"424\" src=\"https:\/\/copperfiction.com\/wp-content\/uploads\/2026\/04\/27.png\" alt=\"\" class=\"wp-image-525\" srcset=\"https:\/\/copperfiction.com\/wp-content\/uploads\/2026\/04\/27.png 900w, https:\/\/copperfiction.com\/wp-content\/uploads\/2026\/04\/27-300x141.png 300w, https:\/\/copperfiction.com\/wp-content\/uploads\/2026\/04\/27-768x362.png 768w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Connecting remote radio nodes to a distant server, with no wired infrastructure \u2014 that&#8217;s what this gateway is built for.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">On one side, a 868 MHz radio interface handles links with multiple remote nodes. On the other, a cellular modem (4G primary, 2G fallback) forwards the data to the outside world. The STM32L152 supervises communication, power management, and overall system behavior.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Power comes from a battery combined with a solar panel, which means energy management is directly tied to communication strategy. In standby, you conserve. When it&#8217;s time to transmit, you spend. Finding the right balance between those two modes in real field conditions \u2014 that&#8217;s where the design actually gets interesting.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Connecting remote radio nodes to a distant server, with no wired infrastructure \u2014 that&#8217;s what this gateway is built for. On one side, a 868 MHz radio interface handles links with multiple remote nodes. On the other, a cellular modem (4G primary, 2G fallback) forwards the data to the outside world. The STM32L152 supervises communication, &#8230; <a title=\"[012] CUSTOM 868 MHz TO CELLULAR GATEWAY\" class=\"read-more\" href=\"https:\/\/copperfiction.com\/index.php\/2019\/11\/11\/gateway-custom-rf-868mhz-to-cellular\/\" aria-label=\"Read more about [012] CUSTOM 868 MHz TO CELLULAR GATEWAY\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[122],"tags":[12,120,121,107],"class_list":["post-524","post","type-post","status-publish","format-standard","hentry","category-122","tag-cellular-modem","tag-radio-868mhz","tag-solar-charging","tag-stm32l152ret6"],"_links":{"self":[{"href":"https:\/\/copperfiction.com\/index.php\/wp-json\/wp\/v2\/posts\/524","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/copperfiction.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/copperfiction.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/copperfiction.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/copperfiction.com\/index.php\/wp-json\/wp\/v2\/comments?post=524"}],"version-history":[{"count":5,"href":"https:\/\/copperfiction.com\/index.php\/wp-json\/wp\/v2\/posts\/524\/revisions"}],"predecessor-version":[{"id":621,"href":"https:\/\/copperfiction.com\/index.php\/wp-json\/wp\/v2\/posts\/524\/revisions\/621"}],"wp:attachment":[{"href":"https:\/\/copperfiction.com\/index.php\/wp-json\/wp\/v2\/media?parent=524"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/copperfiction.com\/index.php\/wp-json\/wp\/v2\/categories?post=524"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/copperfiction.com\/index.php\/wp-json\/wp\/v2\/tags?post=524"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}