{"id":1489,"date":"2014-10-06T22:21:18","date_gmt":"2014-10-06T20:21:18","guid":{"rendered":"http:\/\/labalec.fr\/erwan\/?p=1489"},"modified":"2014-10-17T20:59:37","modified_gmt":"2014-10-17T18:59:37","slug":"arduino-cheap-rf433-temperature-sensor-oregon-2-1-compatible","status":"publish","type":"post","link":"https:\/\/labalec.fr\/erwan\/?p=1489","title":{"rendered":"Arduino : cheap rf433 temperature sensor (oregon 2.1 compatible)"},"content":{"rendered":"

My little project this last week end.<\/p>\n

I need to add a few rf433 oregon temperature sensors to be linked to my rfxcom<\/a> + jeedom <\/a>domotic box.
\nUnfortunately, these sensors (oregon THGR122N) are about 25\u20ac (or 15\u20ac using a cresta clone), not including shiping costs.<\/p>\n

Therefore I decided to do a cheap one myself using :
\n-an arduino pro mini<\/a> (2.50\u20ac)
\n-a fs1000a transmitter<\/a> (1.50\u20ac)
\n-a ds18b20 <\/a>(1\u20ac)<\/p>\n

The whole thing uses less than 2ma when sleeping, and max 20ma when it reads temperature from the ds18b20.<\/p>\n

Here comes the sketch<\/strong> rf433_sendOOK<\/a>.
\nNote that that I am re using code from connectingstuff.net<\/a> to send oregon 2.1 compatible packets.<\/p>\n

Possible evolution would be to replace the arduino pro mini by an ATTINY85.<\/p>\n

\"arduino_oregon\"<\/a><\/p>\n

Here comes the wiring.<\/strong><\/p>\n

\"tx_ds18b20_v2_bb\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

My little project this last week end. I need to add a few rf433 oregon temperature sensors to be linked to my rfxcom + jeedom domotic box. Unfortunately, these sensors (oregon THGR122N) are about 25\u20ac (or 15\u20ac using a cresta clone), not including shiping costs. Therefore I decided to do a cheap one myself using […]<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[],"class_list":["post-1489","post","type-post","status-publish","format-standard","hentry","category-arduino","category-18-id","post-seq-1","post-parity-odd","meta-position-corners","fix"],"_links":{"self":[{"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=\/wp\/v2\/posts\/1489","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1489"}],"version-history":[{"count":9,"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=\/wp\/v2\/posts\/1489\/revisions"}],"predecessor-version":[{"id":1504,"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=\/wp\/v2\/posts\/1489\/revisions\/1504"}],"wp:attachment":[{"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1489"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1489"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1489"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}