{"id":13233,"date":"2026-04-22T10:53:56","date_gmt":"2026-04-22T02:53:56","guid":{"rendered":"https:\/\/www.mateksys.com\/?post_type=portfolio&#038;p=13233"},"modified":"2026-04-22T10:53:56","modified_gmt":"2026-04-22T02:53:56","slug":"mr900-30c","status":"publish","type":"portfolio","link":"https:\/\/www.mateksys.com\/?portfolio=mr900-30c","title":{"rendered":"mLRS MAVLink 900M CAN Receiver, mR900-30C"},"content":{"rendered":"\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-lz6prw5m-332a42cbcb5b7ad67214d45ce5bdd9c0\">\n#top .av-special-heading.av-lz6prw5m-332a42cbcb5b7ad67214d45ce5bdd9c0{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-lz6prw5m-332a42cbcb5b7ad67214d45ce5bdd9c0 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-lz6prw5m-332a42cbcb5b7ad67214d45ce5bdd9c0 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-lz6prw5m-332a42cbcb5b7ad67214d45ce5bdd9c0 av-special-heading-h2 blockquote modern-quote modern-centered  avia-builder-el-0  el_before_av_slideshow  avia-builder-el-first '><h2 class='av-special-heading-tag'  itemprop=\"headline\"  >mLRS MAVLink 900M CAN Receiver, mR900-30C<\/h2><div class='av-subheading av-subheading_below'><p>mLRS (MAVLink long range system) firmware, 900 MHz LoRa, 30 dBm RF power, CAN<\/p>\n<\/div><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n<div  class='avia-slideshow av-lz6px23e-721e32a969b5420ea4349ea18ce6c0cb avia-slideshow-featured_large av_slideshow avia-slide-slider  avia-builder-el-1  el_after_av_heading  el_before_av_tab_container  av-slideshow-ui av-control-default av-slideshow-manual av-loop-once av-loop-manual-endless av-default-height-applied avia-slideshow-1' data-slideshow-options=\"{&quot;animation&quot;:&quot;slide&quot;,&quot;autoplay&quot;:false,&quot;loop_autoplay&quot;:&quot;once&quot;,&quot;interval&quot;:5,&quot;loop_manual&quot;:&quot;manual-endless&quot;,&quot;autoplay_stopper&quot;:false,&quot;noNavigation&quot;:false,&quot;bg_slider&quot;:false,&quot;keep_padding&quot;:false,&quot;hoverpause&quot;:false,&quot;show_slide_delay&quot;:0}\"  itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><ul class='avia-slideshow-inner ' style='padding-bottom: 40%;'><li  class='avia-slideshow-slide av-lz6px23e-721e32a969b5420ea4349ea18ce6c0cb__0  slide-1 slide-odd'><div data-rel='slideshow-1' class='avia-slide-wrap '   ><img fetchpriority=\"high\" class=\"wp-image-13235 avia-img-lazy-loading-not-13235\"  src='https:\/\/www.mateksys.com\/wp-content\/uploads\/2026\/04\/mR900-30C_1.jpg' width='1500' height='600' title='mR900-30C_1' alt=''  itemprop=\"thumbnailUrl\"   \/><\/div><\/li><li  class='avia-slideshow-slide av-lz6px23e-721e32a969b5420ea4349ea18ce6c0cb__1  slide-2 slide-even'><div data-rel='slideshow-1' class='avia-slide-wrap '   ><img fetchpriority=\"high\" class=\"wp-image-13236 avia-img-lazy-loading-not-13236\"  src='https:\/\/www.mateksys.com\/wp-content\/uploads\/2026\/04\/mR900-30C_2.jpg' width='1500' height='600' title='mR900-30C_2' alt=''  itemprop=\"thumbnailUrl\"   \/><\/div><\/li><li  class='avia-slideshow-slide av-lz6px23e-721e32a969b5420ea4349ea18ce6c0cb__2  slide-3 slide-odd'><div data-rel='slideshow-1' class='avia-slide-wrap '   ><img fetchpriority=\"high\" class=\"wp-image-13234 avia-img-lazy-loading-not-13234\"  src='https:\/\/www.mateksys.com\/wp-content\/uploads\/2026\/04\/mR900-30C_3.jpg' width='1500' height='600' title='mR900-30C_3' alt=''  itemprop=\"thumbnailUrl\"   \/><\/div><\/li><\/ul><div class='avia-slideshow-arrows avia-slideshow-controls' ><a href='#prev' class='prev-slide ' aria-hidden='true' data-av_icon='\ue87c' data-av_iconfont='entypo-fontello'  tabindex='-1'>\u4e0a\u4e00\u9875<\/a><a href='#next' class='next-slide ' aria-hidden='true' data-av_icon='\ue87d' data-av_iconfont='entypo-fontello'  tabindex='-1'>\u4e0b\u4e00\u9875<\/a><\/div><div class='avia-slideshow-dots avia-slideshow-controls'><a href='#1' class='goto-slide active' >1<\/a><a href='#2' class='goto-slide ' >2<\/a><a href='#3' class='goto-slide ' >3<\/a><\/div><\/div>\n<div  class='tabcontainer av-lz6py1mr-c661b44b211ac9580dfd6eb967321df7 top_tab  avia-builder-el-2  el_after_av_slideshow  avia-builder-el-last ' role='tablist'>\n<section class='av_tab_section av_tab_section av-181fg71-279ad96c3c756277b0e1d2f934808d29'  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='tab active_tab' role='tab' tabindex='0' data-fake-id='#tab-id-1' aria-controls='tab-id-1-content'  itemprop=\"headline\" >Specifications<\/div><div id='tab-id-1-content' class='tab_content active_tab_content' aria-hidden=\"false\"><div class='tab_inner_content invers-color'  itemprop=\"text\" ><h4>Specifications<\/h4>\n<ul>\n<li>STM32G431KB,\u00a0 mLRS firmware<\/li>\n<li>LoRa SX1262 with TCXO<\/li>\n<li>PA\/LNA SE2435L<\/li>\n<li>RF Frequency: 900MHz (868MHz, 915MHz FCC)<\/li>\n<li>915MHz RF power: 17dBm(min) \/ 20dBm \/ 24dBm \/ 27dBm \/ 30dBm(1000mW)<\/li>\n<li>868MHz RF power: 17dBm(min) \/ 20dBm \/ 24dBm \/ 27dBm \/ 30dBm(1000mW)<\/li>\n<li>Antenna connector: IPEX MHF-1<\/li>\n<li>CAN: Bi-directional Serial MAVLink &amp; RC out (DroneCAN protocol), Default<\/li>\n<li>TX1\/RX1: Bi-directional Serial MAVLink<\/li>\n<li>TX2: RC out(CRSF or SBUS)<\/li>\n<li>one buttom for DFU mode and Bind<\/li>\n<\/ul>\n<ul>\n<li>Power supply: 4.5-13V DC @ \u201cV\u201d Pad<\/li>\n<li>Power dissipation:\u00a0 Average 340mA\/Peak 850mA@5V IN(31Hz, 30dbm)<\/li>\n<li>PCB Size: 30&#215;213.5mm<\/li>\n<li>Weight: 6g w\/ antenna<\/li>\n<\/ul>\n<ul>\n<li>Packing:\n<ul>\n<li>1x mR900-30C<\/li>\n<li>1x IPEX MHF1 dipole antenna. 8cm<\/li>\n<li>1x Heatsink 20*20*6mm<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4>LED Status<\/h4>\n<ul>\n<li>[Red flashing 2Hz], not connected to transmitter<\/li>\n<li>[Green flashing 1Hz], connected to transmitter<\/li>\n<li>[Red and Green alternately ], Binding mode enabled<\/li>\n<\/ul>\n<h4>Binding<\/h4>\n<ul dir=\"auto\">\n<li>After powering on,\u00a0 press the bind button (for ca. 4 seconds) on the receiver. When in bind mode, the green and red LEDs will blink alternatively with ca 2.5 Hz.<\/li>\n<li><a href=\"https:\/\/github.com\/olliw42\/mLRS-docu\/blob\/master\/docs\/BINDING.md\" target=\"_blank\" rel=\"noopener\">https:\/\/github.com\/olliw42\/mLRS-docu\/blob\/master\/docs\/BINDING.md<\/a><\/li>\n<\/ul>\n<h4>Firmware<\/h4>\n<ul>\n<li>mLRS\u00a0 <a href=\"https:\/\/github.com\/olliw42\/mLRS\/tree\/main\/firmware\/pre-release-stm32\" target=\"_blank\" rel=\"noopener\">https:\/\/github.com\/olliw42\/mLRS\/tree\/main\/firmware\/pre-release-stm32<\/a><\/li>\n<li>Targets:\n<ul>\n<li>rx-matek-mr900-30C-g431kb<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4>Settings<\/h4>\n<ul>\n<li data-wpview-marker=\"https%3A%2F%2Fgithub.com%2Folliw42%2FmLRS-docu%2Fblob%2Fmain%2Fdocs%2FDRONECAN.md\"><a href=\"https:\/\/github.com\/olliw42\/mLRS-docu\/blob\/main\/docs\/DRONECAN.md\" target=\"_blank\" rel=\"noopener\">mLRS Documentation: DroneCAN for ArduPilot Systems<\/a><\/li>\n<li data-wpview-marker=\"https%3A%2F%2Fgithub.com%2Folliw42%2FmLRS-docu%2Fblob%2Fmain%2Fdocs%2FDRONECAN.md\"><a href=\"https:\/\/github.com\/olliw42\/mLRS-docu\/blob\/main\/docs\/CRSF.md#stream-rates\" target=\"_blank\" rel=\"noopener\">MAVLink stream rates<\/a><\/li>\n<\/ul>\n<h4>Tips<\/h4>\n<ul>\n<li><a href=\"https:\/\/github.com\/olliw42\/mLRS\" target=\"_blank\" rel=\"noopener\">mLRS Github<\/a>\u00a0 &amp; <a href=\"https:\/\/github.com\/olliw42\/mLRS-docu\/tree\/master\" target=\"_blank\" rel=\"noopener\">Documentation<\/a><\/li>\n<li><a href=\"https:\/\/discord.com\/invite\/vwjzCD6ws5\" target=\"_blank\" rel=\"noopener\">mLRS Discord<\/a><\/li>\n<li><a href=\"https:\/\/www.facebook.com\/groups\/mlrslink\/\" target=\"_blank\" rel=\"noopener\">mLRS Facebook group<\/a><\/li>\n<li>If set RF power &gt;=500mW, It is recommended to attach the heatsink to the bottom side of PCB. The gaps between fins can be used for mounting with M3 screws<\/li>\n<li><span style=\"color: #0000ff;\">MATEKSYS mLRS 900MHz series are NOT compatible with ELRS 900MHz &amp; Frsky R9 series using the SX127x. They will not bind with each other.<\/span><\/li>\n<li><a href=\"https:\/\/github.com\/olliw42\/mLRS-docu\/blob\/main\/docs\/SX126x_SX127x_INCOMPATIBILITY.md#sx126x-and-sx127x-incompatibility\" target=\"_blank\" rel=\"noopener\">SX126x_SX127x_INCOMPATIBILITY<\/a><\/li>\n<\/ul>\n<h4 id=\"flashing-via-uart\"><\/h4>\n<\/div><\/div><\/section>\n<section class='av_tab_section av_tab_section av-lz6qidrc-dcfbe6fc1fffc5554d4ad69d6ef09e3d'  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='tab' role='tab' tabindex='0' data-fake-id='#tab-id-2' aria-controls='tab-id-2-content'  itemprop=\"headline\" >Firmware flashing <\/div><div id='tab-id-2-content' class='tab_content' aria-hidden=\"true\"><div class='tab_inner_content invers-color'  itemprop=\"text\" ><ul>\n<li><a href=\"https:\/\/olliw.eu\/mLRSFlasher\" rel=\"nofollow\">mLRS Flasher Web App<\/a><\/li>\n<li>Targets:\n<ul>\n<li>RX Receiver: rx-matek-mr900-30c-g431kb<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014<\/p>\n<p>Make sure DFU driver has been installed. Check out \u201cInstall DFU Drivers\u201d in\u00a0<a href=\"https:\/\/www.mateksys.com\/?p=5159#tab-id-1\" target=\"_blank\" rel=\"noopener\">this page<\/a><\/p>\n<p>Connect the Receiver USB to computer while holding the boot button in.<\/p>\n<ol>\n<li>Click &#8220;Receiver&#8221; tab<\/li>\n<li>Firmware file: rx-matek-mr900-30c-g431kb-v***.hex<\/li>\n<li>Flash method: DFU(USB)<\/li>\n<li>Click \u201cFlash Receiver\u201d<\/li>\n<li>After programming, unplug USB and plug USB back in. If red LED blinks at 2Hz, the receiver is waiting for connecting with transmitter.<\/li>\n<\/ol>\n<ul>\n<li>When the receiver is powered on and running in normal mode with mLRS firmware, it is normal for the computer to display an <strong>&#8220;Unknown USB Device&#8221;<\/strong> warning.<\/li>\n<li>The USB DM and DP pins of the G431 MCU are <strong>multiplexed and occupied<\/strong> by the CAN transceiver, which disables normal USB functionality and causes the system to report an unknown device.<\/li>\n<\/ul>\n<\/div><\/div><\/section>\n<\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"featured_media":13237,"comment_status":"closed","ping_status":"closed","template":"","tags":[240,239,238,237],"portfolio_entries":[236,97],"class_list":["post-13233","portfolio","type-portfolio","status-publish","has-post-thumbnail","hentry","tag-30dbm","tag-900mhz","tag-mavlink","tag-mlrs","portfolio_entries-mlrs","portfolio_entries-new"],"_links":{"self":[{"href":"https:\/\/www.mateksys.com\/index.php?rest_route=\/wp\/v2\/portfolio\/13233","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.mateksys.com\/index.php?rest_route=\/wp\/v2\/portfolio"}],"about":[{"href":"https:\/\/www.mateksys.com\/index.php?rest_route=\/wp\/v2\/types\/portfolio"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mateksys.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=13233"}],"version-history":[{"count":8,"href":"https:\/\/www.mateksys.com\/index.php?rest_route=\/wp\/v2\/portfolio\/13233\/revisions"}],"predecessor-version":[{"id":13260,"href":"https:\/\/www.mateksys.com\/index.php?rest_route=\/wp\/v2\/portfolio\/13233\/revisions\/13260"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.mateksys.com\/index.php?rest_route=\/wp\/v2\/media\/13237"}],"wp:attachment":[{"href":"https:\/\/www.mateksys.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=13233"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.mateksys.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=13233"},{"taxonomy":"portfolio_entries","embeddable":true,"href":"https:\/\/www.mateksys.com\/index.php?rest_route=%2Fwp%2Fv2%2Fportfolio_entries&post=13233"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}