Cumulus Support

mr.sneezy

I've had an initial look at the WH2900 RF protocol to compare with the WH24. Similar, FSK, 100uS symbol period... I'm using an $10 RTL-SDR USB stick receiver, and Universal Radio Hacker open source software. The outdoor station is inside the house with me, the wind vane and wind cups are held static...

mr.sneezy

Hi AllyCat See attached spreadsheet for WH24 RF Protocol. I have confirmed the values with Fine Offset. I have also done some checks on my side and it is now in the range that i expect the values to be if i compare them with other sources in my area. The 18th byte that is was seeing, still not sure...

mr.sneezy

Thanks Alan, I think my code ran to about 4k but had debug and other stuff in there that bloated it somewhat. Just could not fit in the 3.5k of the 16F819 I started with. Hey, on a tangent, I noted to day that there has been some advances with RTL-SDR receiver dongles and decoding signals similar to...

mr.sneezy

@Martin (Mr S). Nice pictures, pity they're a bit large for my PC screen. ;) Is there a "cheap" version of PICbasic? The PIC16F1509 doesn't even seem to be supported by the (cheaper) "Student" version. :( Now, a small "advert" (I have no connection with the company): F...

mr.sneezy

Wow, I could hear the thread's 'crickets chirping' while typing out my last post, then bam, another two pages of posts in two days. Seems there has been much going on with you guys in other threads that I don't monitor. I read the posts above, and found the console memory map page and spreadsheet, b...

mr.sneezy

Another six monthly update, and maybe the last on this thread. The project is mature enough to use as is for what I wanted it for (a bedside table display) and I've stopped working on it. I did change the LCD to a Red on Black style, and that is MUCH better to see at night compared to White on Blue....

mr.sneezy

A bit of a six monthly update. My bigger PIC MCU's finally got to me after a re-order, and I cut over my code to suit it. Now that I have some spare code space to burn I've got the project nearly where I want it. I added CRC checking to ensure I ignore corrupt data, and that's going well. I have cha...

mr.sneezy

Here is the strangest thing: this morning I checked the Cumulus screen and saw a red light flashing. Over 2 hours’ worth of "Lost sensor contact" messages. As expected the FO console showed "-----" ... yet the Raspberry Pi was happily receiving and recording data! The FO console...

mr.sneezy

I've been refining my code and testing RF configuration settings bit by bit. Still find that the ones recommended to me seem to work the best. I can make a more RF sensitive config, but it gets noise inputs from other 433Mhz devices near me. In the end I've decided to have two settings, selected by ...

mr.sneezy

Guys, have you looked at this thread lately? Yep, I'm following the progress there. I was wondering if the 'incompatability between older FO units and the newer ones was that they shifted from OOK to FSK when they started using the RFM modules. My FO WH2081 display has a RFM02 receiver in it and se...

mr.sneezy

Noticed this today while on Ebay
http://www.ebay.com.au/itm/Wireless-Rem ... 0795662196?
Very cheap if it works with the FO transmitters.

mr.sneezy

mcrossley wrote:Yeah, I guess I should get my finger out and at least knock up some leads for a sound card based 'scope, then boot up the 'pi again...

Can the 'pi be a scope ?
(Raspberry Pi I assume?)

mr.sneezy

Mr Sneezy, that's great! Would love a circuit schematic so I could also make one ;) Actually, you could probably sell these. Once I refine a few things I'll knock up a schematic and post the hex file for the PIC if you are interested. You'll need to be able to program a PIC16F819 or something close...

mr.sneezy

Hey what do your recovered pulses look like on a CRO anyway ? What recovered pulses, and what CRO? :( I am poorly equipped in the electronics department, a multimeter and soldering iron is about it! :roll: Hmm. Sounds like building some test gear might be the next priority :) Try Google this string...

mr.sneezy

What is the exact frequency are you using? I have set 868.3MHz just because that is what the sticker on the transmitter days, I have no idea if it is accurate enough. I'm set to 433.90Mhz I checked that originally with a cheap UHF handheld radio on receive (can send you a link for it), and also lat...

Cumulus Support

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Re: HP1000 / WH24 RF Protocol

Re: HP1000 / WH24 RF Protocol

Re: Decoding the Fine Offset station RF transmissions ?

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Still pottering with this project...

Re: Decoding the Fine Offset station RF transmissions ?

Re: Decoding the Fine Offset station RF transmissions ?

Re: Decoding the Fine Offset station RF transmissions ?

Re: Decoding the Fine Offset station RF transmissions ?

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