{"id":1354,"date":"2017-04-07T01:46:56","date_gmt":"2017-04-06T23:46:56","guid":{"rendered":"http:\/\/www.ik0vve.net\/?p=1354"},"modified":"2017-04-07T01:46:56","modified_gmt":"2017-04-06T23:46:56","slug":"neo-m8n-u-blox-gps-receiver","status":"publish","type":"post","link":"http:\/\/www.ik0vve.net\/?p=1354","title":{"rendered":"NEO M8N U-Blox GPS receiver"},"content":{"rendered":"

\"WhatsAppFinally I’ve had some free time to play with my new GPS receiver, a NEO M8N.<\/p>\n

This nice and cheap object arrived to me over a little PCB where other components are positioned for an easier and fast utilization. The rx-tx  serial data are 3.3 V level, so a converter is needed for a correct work. I’ve used a USB converter that provides the 5 Volt DC for the 3.3 Volt board regulator.<\/p>\n

To configure the NEO M8N I’ve used U-Center, the software is freely available at U-Blox website.<\/p>\n

At first start the power LED was on and after a while also the TimePulse LED began to blink.<\/p>\n

Despite I used it in an indoor ambient has been quickly possible to receive a lot of satellites.<\/p>\n

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

This GPS receiver will be used to discipline my VLF to MF receivers thanks to the possibility to change the TimePulse period configuring it by U-Center software. I’ve tried to change the frequency measuring it by an oscilloscope. Here follows some images of the test.<\/p>\n

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

 <\/p>\n

A first test at 136 kHz with a low duty cycle. I’ve tried it at the maximum frequency of 10 MHz and the result seems to be good looking also to its linearity.<\/p>\n

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

Lately other tests with 50% duty cycle at some interesting frequency:<\/p>\n

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

To set a decimal frequency we need to change the frequency setup to period setup, so it will be possible to write a very sharp frequency till to nHz’s. For example I’ve tried to set 8270.005 Hz, whose period is 120.918911 us (microSeconds). Minimum frequency reached is 0.01 Hz with a possible accuracy of 0.1 nHz (nanoHz)!<\/p>\n","protected":false},"excerpt":{"rendered":"

Finally I’ve had some free time to play with my<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[62],"tags":[],"_links":{"self":[{"href":"http:\/\/www.ik0vve.net\/index.php?rest_route=\/wp\/v2\/posts\/1354"}],"collection":[{"href":"http:\/\/www.ik0vve.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.ik0vve.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.ik0vve.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.ik0vve.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1354"}],"version-history":[{"count":2,"href":"http:\/\/www.ik0vve.net\/index.php?rest_route=\/wp\/v2\/posts\/1354\/revisions"}],"predecessor-version":[{"id":1363,"href":"http:\/\/www.ik0vve.net\/index.php?rest_route=\/wp\/v2\/posts\/1354\/revisions\/1363"}],"wp:attachment":[{"href":"http:\/\/www.ik0vve.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1354"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.ik0vve.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1354"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.ik0vve.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1354"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}