Posts 4 comments on tl;dr complete build summary

tl;dr complete build summary

There are a lot of posts to trawl through in this blog if you’ve not followed it from the beginning. Hopefully this summary makes everything a bit clearer…

The first thing I did was to have a look at other cat tracking products on the market.  I found that they all have a big flaw… battery life.  I wanted GPS level accuracy and a battery life measured in months.  Nothing on the market offered that, so it was down to me to design it!

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Posts 3 comments on Long Range Communications with the CC1125

Long Range Communications with the CC1125

I’ve now written enough code for the PIC on the CatTrack base station such that I can begin to test it!

I’ve already tested comms with the CatTrack collar, using a development board instead of the base station.  Read about that here.

Unfortunately, when testing my base station I found that it was nowhere near as sensitive as the development board – the base station was getting CRC errors whilst the development board was still receiving the signal fine.  After a small bit of investigation I found out why.  The problem is all down to the fact that I want to use the CC1125 at the lowest baud rate (300 bps), and consequently a very narrow receive bandwidth (3.8 kHz).

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