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Topic: Cheap UHF spectrum analyzer (and RC tx rx) using RFM22 module (Read 49 times) previous topic - next topic

Nandox7

I've sent them an email.
They replying saying that it got out of stock in the mean time... and haven't sent it yet.
Maybe still during this week they'll received more.

As I got the order stuck there, I was wondering about this: http://rf-store.com/index.php?view=2&pv=showart&prod_id=RFM70-S
If I can build the same frequency scanner with it as well for 2.4Ghz. From the specs it seems so as the frequency can be selected up to
a 1Mhz interval.

zitron


As I got the order stuck there, I was wondering about this: http://rf-store.com/index.php?view=2&pv=showart&prod_id=RFM70-S
If I can build the same frequency scanner with it as well for 2.4Ghz. From the specs it seems so as the frequency can be selected up to
a 1Mhz interval.


That is pretty cheap, but I don't see a register for the RSSI value anywhere.

Nandox7

It's register 05 for the RSSI.

Btw, after almost a month I got an email saying that my RFM22 were shipped...
I had asked to include one of these cheap 2.4Ghz... but got no reply. :S

We'll I'm going to start assembling the boards as yesterday I got the solder paste and I expect the RFM's to arrive during next week.

zitron


It's register 05 for the RSSI.

Btw, after almost a month I got an email saying that my RFM22 were shipped...
I had asked to include one of these cheap 2.4Ghz... but got no reply. :S

We'll I'm going to start assembling the boards as yesterday I got the solder paste and I expect the RFM's to arrive during next week.



That's a long time to wait! I have been flying my plane with the RFM22, it's working great so far.

Register 05 is write-only,  it's "RSSI Threshold for CD detect". You can't read the RSSI value from it.

Nandox7



That's a long time to wait! I have been flying my plane with the RFM22, it's working great so far.

Register 05 is write-only,  it's "RSSI Threshold for CD detect". You can't read the RSSI value from it.


Yes it is.. :(
And if I hadn't contacted them I wouldn't even knew what was going on.

That's right, I totally ignored the 'W'. :)
But if it allows to seat RSSI report or not, it must have a way to read it.

Seems more are looking for it. :)
http://arduino.cc/forum/index.php?topic=107699.0

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