CorB 64 Posted July 20, 2012 Share Posted July 20, 2012 Hi all, One of the things I wanted to build using the Anaren AIR boosterpack was a mini spectrum "analyzer" or spectrum display. During my holiday i found time to play around with both the AIR boosterpack and the LCD module Lars has produced. Although the AIR boosterpack was designed for 868/915 Mhz it seems the receiver inside (CC110L) is sensitive also in the 433Mhz region. The code I share with this mail allows the user (by changing a define) to switch between 3 frequencybands. Two buttons of the LCD package allow change of RX bandwidth and channelwidth. THe screenshot below shows a typical readout in the 433 Mhz band in a room where a Lacross TX3TH temperature/humidity sensor is sending data every minute using an OOK protocol (Request: if anybody knows how to receive/decode OOK using a CC110L please inform me). The display shows the low and high frequency in Mhz and shows the frequency with the highest readout (RSSI in dB) in kHz and as a blinking line in the graph. If you want to know more about this mini spectrum display or have other comments, feel free to share them. regards CorB spectrum.zip glcd.zip dacoffey, Nytblade, oPossum and 4 others 7 Quote Link to post Share on other sites
larsie 121 Posted July 20, 2012 Share Posted July 20, 2012 Cool project. Thanks For OOK you may be able to look at the Carrier Sense and define CS as an output on the output pin of the Cc1101. There is also a separate mode for the cc1101 that turns off packet control (synchronous mode??? ) which is used for this sort of thing. The cc1101 is designed as a very flexible chip to replace old tech implementations for sensors, garage openers etc. There is an ook mode also, and you can use smartrf studio to get the right parameters. Then the first powerlevel configs are used to say if it shiuld be ask or ook. But in this case you need to know the bitrate, and the protocol needs to have same length of on and off bits. Many of the protocols use length of the pulse to indicate low and high, which makes CS a good option I think. CorB 1 Quote Link to post Share on other sites
CorB 64 Posted July 22, 2012 Author Share Posted July 22, 2012 Hi Lars, Thanks, Ive looked for OOK code examples are quite some place on the TI site but next to some guidance on how to use the AGCTRL settings I havent found any basic coding. Would be neat to read the temperature/humidity of my inside/outside sensors using the boosterpack. I will start experimenting to get the output of the receiver onto GDO2 (P1.0). regards Cor See more of this at MSP430 meets LaCrosse Temperature/Humidity sensor TX3TH P.S. Ive found good information on the sensors http://ftp.f6fbb.org/domo/sensors/tx_signals.php http://ftp.f6fbb.org/domo/sensors/tx3_th.php Quote Link to post Share on other sites
Automate 69 Posted July 27, 2012 Share Posted July 27, 2012 @CorbB Have you talked with Anaren about a 433 Mhz version of the booster pack? This page http://www.anaren.com/air/cc110l-air-module-boosterpack lists a 433 version but it does not seem to be released yet. I would think the "European 868-870MHz and US 902-928MHz ISM bands" version's antenna would not be tuned very well for 433 Mhz. I need one with good range at 433. Quote Link to post Share on other sites
CorB 64 Posted July 27, 2012 Author Share Posted July 27, 2012 @CorbB Have you talked with Anaren about a 433 Mhz version of the booster pack? This page http://www.anaren.com/air/cc110l-air-module-boosterpack lists a 433 version but it does not seem to be released yet. I would think the "European 868-870MHz and US 902-928MHz ISM bands" version's antenna would not be tuned very well for 433 Mhz. I need one with good range at 433. Hi, For my purpose the current boosterpack at 868 works fine. I am currently reading an inside sensor about 7 m away and one outside at 15m . To boost sensitivity Ive made the RX bandwidth a lot smaller. In the original code its >800kHz, I am now down to 300Khz which has increased the signal quality a lot. Current best channelsetting is 40. But if you want a longer range I would suggest going for a simple separate 433Mhz receivermodule. You can see examples of the type (Aurel I believe) in the Arduino weatherstation setup. CorB Quote Link to post Share on other sites
CorB 64 Posted August 30, 2012 Author Share Posted August 30, 2012 I had contact with Anaren about the 433Mhz boosterpacks, they still are planned to be released but Anaren seems to have put development of other RFpacks in the 2.4Ghz band at a higher priority. cheers Cor Quote Link to post Share on other sites
Automate 69 Posted August 30, 2012 Share Posted August 30, 2012 Thanks for the 433 info. BTW. TI has announced a new "Performance Line" sub 1 GHz RF chip called CC112X They claim "range significantly beyond 25-kilometers" out-of-the-box with their development kit. $300 More info here http://www.ti.com/ww/en/analog/sub_1_GHz_performance_line_rf_ic/ Quote Link to post Share on other sites
CorB 64 Posted August 30, 2012 Author Share Posted August 30, 2012 That would be enough for "indoor" usage Quote Link to post Share on other sites
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