{"id":414,"date":"2014-06-07T19:29:21","date_gmt":"2014-06-07T19:29:21","guid":{"rendered":"http:\/\/www.thinkering.de\/cms\/?p=414"},"modified":"2017-02-20T08:11:25","modified_gmt":"2017-02-20T08:11:25","slug":"rfm23bp-breakout-board","status":"publish","type":"post","link":"http:\/\/www.thinkering.de\/cms\/?p=414","title":{"rendered":"RFM23BP Breakout Board"},"content":{"rendered":"<p>Breakout boards for the HopeRF RFM23BP 433MHz modules with SMA connectors. Fabricated by the famous Magic Purple PCB Factory \ud83d\ude09<br \/>\n<br style=\u201dclear:both;\u201d \/><br \/>\n<br style=\u201dclear:both;\u201d \/><br \/>\nThese modules come in different operating frequencies and are supposed to transmit with up to 1W. They communicate via SPI and need up to 600mA (max. output power). The power can be set in software. I made them for long range telemetry purposes, but will not operate them at full power, since a license is needed for output powers above 10mW, even in the free ISM  (<strong>I<\/strong>ndustrial, <strong>S<\/strong>cientific and <strong>M<\/strong>edical) band.<br \/>\n<br style=\u201dclear:both;\u201d \/><br \/>\n<br style=\u201dclear:both;\u201d \/><br \/>\n<a href=\"http:\/\/www.thinkering.de\/cms\/wp-content\/uploads\/2014\/06\/RFM23BP-boards.jpg\"><img loading=\"lazy\" src=\"http:\/\/www.thinkering.de\/cms\/wp-content\/uploads\/2014\/06\/RFM23BP-boards-300x225.jpg\" alt=\"RFM23BP boards\" width=\"300\" height=\"225\" class=\"alignnone size-medium wp-image-415\" srcset=\"http:\/\/www.thinkering.de\/cms\/wp-content\/uploads\/2014\/06\/RFM23BP-boards-300x225.jpg 300w, http:\/\/www.thinkering.de\/cms\/wp-content\/uploads\/2014\/06\/RFM23BP-boards-1024x768.jpg 1024w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><br \/>\n<br style=\u201dclear:both;\u201d \/><br \/>\n<br style=\u201dclear:both;\u201d \/><br \/>\nThe modules have a blank ground plane without solder mask on the bottom side. A special soldering technique was used here: I tinned this blank area and filled all those vias on the breakout board with solder. Then I applied flux to both the module and the board and finally soldered them together by holding the sandwich against my cooking plate. This will make perfect heat dissipation from the power transistor.<br \/>\n<br style=\u201dclear:both;\u201d \/><br \/>\n<br style=\u201dclear:both;\u201d \/><br \/>\n<a href=\"http:\/\/www.thinkering.de\/cms\/wp-content\/uploads\/2014\/06\/RFM23BP-in-use.jpg\"><img loading=\"lazy\" src=\"http:\/\/www.thinkering.de\/cms\/wp-content\/uploads\/2014\/06\/RFM23BP-in-use-300x225.jpg\" alt=\"RFM23BP in use\" width=\"300\" height=\"225\" class=\"alignnone size-medium wp-image-416\" srcset=\"http:\/\/www.thinkering.de\/cms\/wp-content\/uploads\/2014\/06\/RFM23BP-in-use-300x225.jpg 300w, http:\/\/www.thinkering.de\/cms\/wp-content\/uploads\/2014\/06\/RFM23BP-in-use-1024x768.jpg 1024w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><br \/>\n<br style=\u201dclear:both;\u201d \/><br \/>\n<br style=\u201dclear:both;\u201d \/><br \/>\nEagle board files:<br \/>\n<br style=\u201dclear:both;\u201d \/><br \/>\n<br style=\u201dclear:both;\u201d \/><br \/>\n<a href=\"http:\/\/www.thinkering.de\/cms\/wp-content\/uploads\/2014\/06\/RFM23BP.zip\">RFM23BP<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Breakout boards for the HopeRF RFM23BP 433MHz modules with SMA connectors. Fabricated by the famous Magic Purple PCB Factory \ud83d\ude09 These modules come in different operating frequencies and are supposed to transmit with up to 1W. They communicate via SPI and need up to 600mA (max. output power). The power can be set in software. &hellip; <a href=\"http:\/\/www.thinkering.de\/cms\/?p=414\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">RFM23BP Breakout Board<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0},"categories":[1],"tags":[],"_links":{"self":[{"href":"http:\/\/www.thinkering.de\/cms\/index.php?rest_route=\/wp\/v2\/posts\/414"}],"collection":[{"href":"http:\/\/www.thinkering.de\/cms\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.thinkering.de\/cms\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.thinkering.de\/cms\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.thinkering.de\/cms\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=414"}],"version-history":[{"count":5,"href":"http:\/\/www.thinkering.de\/cms\/index.php?rest_route=\/wp\/v2\/posts\/414\/revisions"}],"predecessor-version":[{"id":419,"href":"http:\/\/www.thinkering.de\/cms\/index.php?rest_route=\/wp\/v2\/posts\/414\/revisions\/419"}],"wp:attachment":[{"href":"http:\/\/www.thinkering.de\/cms\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=414"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.thinkering.de\/cms\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=414"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.thinkering.de\/cms\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=414"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}