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Latest Cumulus MX release v3.0.0 build 3050 - 1 May 2019.
Legacy Cumulus 1 release v1.9.4 (build 1099) - 28 November 2014

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Search found 6 matches

by MFX
Wed 11 Apr 2012 9:55 am
Forum: Fine Offset/EasyWeather
Topic: The inside of the ws-1081
Replies: 121
Views: 108240

Re: The inside of the ws-1081

MFX wrote:
Good luck working out the RF protocol, nobody else seems to have succeeded yet.
possibly TX battery voltage?
Ah what I though may be battery voltage looks like it may be a checksum which is a bit of a stumbling block until I can work out what checksum method they've used.

Martin.
by MFX
Tue 10 Apr 2012 8:21 pm
Forum: Fine Offset/EasyWeather
Topic: The inside of the ws-1081
Replies: 121
Views: 108240

Re: The inside of the ws-1081

Good luck working out the RF protocol, nobody else seems to have succeeded yet. Well I'm making progress, I've isolated the bits of the data stream that indicate :- Wind speed Direction Rainfall Temperature Humidity Low battery possibly TX battery voltage? But I haven't been able to work out how th...
by MFX
Tue 10 Apr 2012 2:56 pm
Forum: Fine Offset/EasyWeather
Topic: The inside of the ws-1081
Replies: 121
Views: 108240

Re: The inside of the ws-1081

You've omitted "Fit a larger battery to the transmitter" (or maybe add solar powering). The reason that the transmitter runs for a year or more on a pair of cells is that it only transmits for 50ms every 48 seconds (i.e. 0.1% duty cycle). Not a concern for me it will only ever need to run for a wee...
by MFX
Tue 10 Apr 2012 2:54 pm
Forum: Fine Offset/EasyWeather
Topic: The inside of the ws-1081
Replies: 121
Views: 108240

Re: The inside of the ws-1081

The protocol is available unofficially from various places, e.g. http://code.google.com/p/fowsr/downloads/list Ah sorry I don't mean the USB link between the receiver and the PC I mean the bit between the micro in the receiver and the Holtek USB chip. Would there be any way of making Cumulus look a...
by MFX
Tue 10 Apr 2012 2:17 pm
Forum: Fine Offset/EasyWeather
Topic: The inside of the ws-1081
Replies: 121
Views: 108240

Re: The inside of the ws-1081

Thanks, a bit more detail about my plan. :- Fit a better quality TX/RX unit with decent aerials to extend the range. Work out the protocol for the wireless link between the units (has someone done this already?) Work out the protocol for the USB link (ditto?). Fit my own little micro to the transmit...
by MFX
Tue 10 Apr 2012 12:59 pm
Forum: Fine Offset/EasyWeather
Topic: The inside of the ws-1081
Replies: 121
Views: 108240

Re: The inside of the ws-1081

Hi, does anyone know the exact part number for the Holtek USB IC, it looks like its HT82M something but it's not clear from the photo. I have a cunning plan to get a better update rate on the wind speed and direction sensors (I'm not too bothered on update rate for the other sensors) but need to kno...