Please read the posts in the Announcements section about the current status of Cumulus development now that I have retired

Please read this post before posting

Latest Cumulus release v1.9.4 (build 1099) - Nov 28 2014
Latest Cumulus MX release - v3.0.0 build 3043 Jan 20 2017. See this post for download

Search found 1009 matches

by AllyCat
Fri Jan 12, 2018 10:37 am
Forum: Oregon Scientific
Topic: Oregon WMR89
Replies: 3
Views: 127

Re: Oregon WMR89

Hi, The wind and rain sensors are available from Maplin at quite reasonable prices and are all compatible. However their (434MHz) transmitter is out-of-stock and wouldn't support the (inessential) Radio Clock of the 1080. Clas Ohlson also have the latest (blue backlight) version of the 1080 at £10 l...
by AllyCat
Sun Jan 07, 2018 12:04 pm
Forum: Fine Offset/EasyWeather
Topic: Air Pressure Sensor - WH1080
Replies: 6
Views: 963

Re: Air Pressure Sensor - WH1080

Hi, Quite an old thread (however the ".. inside of WH1081" thread is even older), but I happened across this specification for the pressure sensor used in at least SOME of the Fine Offset Consoles. They do appear to be available as "spares" on the "open market" (ebay, A...
by AllyCat
Wed Dec 27, 2017 4:51 pm
Forum: Fine Offset/EasyWeather
Topic: Photos of the insides of Fine Offset sensors.
Replies: 139
Views: 71518

Re: Photos of the insides of Fine Offset sensors.

Hi, Possibly worth a try, but it could be a SHT/DHT 15 or 21, or AM2301, etc.. First thing to check is if it's using 2, 3 or 4 wires/pins to connect to the main board. That may help determine if it's an I2C, SPI or a "one-way" data bus. The sensor is probably made by the Chinese company &q...
by AllyCat
Sat Dec 23, 2017 3:41 pm
Forum: Fine Offset/EasyWeather
Topic: Photos of the insides of Fine Offset sensors.
Replies: 139
Views: 71518

Re: Is it possible to change the Humidity-Sensor on the circuit board?

Hi, The Temperature-Sensor works exactly, but the Humidity-Sensor is worn. There have been several different types of humidity sensor fitted in these stations and I thought the more recent versions use the same sensor for temperature and humidity. However, it should still be on a small module or &qu...
by AllyCat
Tue Dec 19, 2017 4:13 pm
Forum: Fine Offset/EasyWeather
Topic: Photos of the insides of Fine Offset sensors.
Replies: 139
Views: 71518

Re: Photos of the insides of Fine Offset sensors.

Hi, The distance from the PCB to the center of the battery contacts is 7mm on mine. I think you mean from the inside of the "battery box" plastic case, because AA cells are exactly 14 mm in diameter (they're also known as "14500" cells, i.e. 14 mm in diameter and 50.0 mm long). S...
by AllyCat
Fri Dec 08, 2017 10:26 am
Forum: General
Topic: Weather Station Recommendations
Replies: 3
Views: 261

Re: Weather Station Recommendations

Hi Andy, Need the usual measurements including UV .... What for? The Davis sensor alone for that costs (much) more than your total budget. As Ray says, there really isn't anything much at your price point. So take a look at the Weatherduino Project which now includes UV and even Air Quality Monitori...
by AllyCat
Wed Dec 06, 2017 9:52 am
Forum: General
Topic: The maplin wireless wether station radio link fault
Replies: 2
Views: 185

Re: The maplin wireless wether station radio link fault

Hi Dave, Welcome to the forum. Sorry we didn't respond yo your previous post but there really isn't much to add to the answers there or elsewhere on the forum. But to summarise; you must power-down the Console (remove and replace the batteries and USB cable) to resynchronise the transmitter after re...
by AllyCat
Mon Dec 04, 2017 6:33 pm
Forum: General
Topic: Ambient WS-2080 RF Reset?
Replies: 4
Views: 159

Re: Ambient WS-2080 RF Reset?

Hi, 433 MHz is the primary ISM "License Exempt" frequency in Europe (and much of the World) but barely "LegaL" in USA. The "official" frequency is 915 MHz, but it appears that Fine Offset may (still) use a different Wireless Protocol (FSK) for that frequency. The Fine O...
by AllyCat
Mon Dec 04, 2017 9:52 am
Forum: General
Topic: Ambient WS-2080 RF Reset?
Replies: 4
Views: 159

Re: Ambient WS-2080 RF Reset?

Hi Bob, I've not dismantled my 2080 (yet) but you may get some "clues" about the general method of construction from the two "...insides if..." sticky threads in the Fine Offset section. The transmitter uses a tuned loop antenna printed on its PCB, but the Console antenna is prob...
by AllyCat
Tue Nov 28, 2017 1:05 pm
Forum: Cumulus 1
Topic: Rain calculator for WS-2080
Replies: 9
Views: 338

Re: Rain calculator for WS-2080

Hi, Yes the nominal rain tip is 0.3mm and the High byte is immediately before the Low byte. It's easy to make the Rain Counter overflow, just plug the anemometer into the Rain socket of the Transmitter. ;) Kevin Sangeelee wrote some code for the Raspberry Pi (on their forum and this one) but the Bas...
by AllyCat
Sun Nov 26, 2017 10:10 pm
Forum: Cumulus 1
Topic: Rain calculator for WS-2080
Replies: 9
Views: 338

Re: Rain calculator for WS-2080

Hi, We have an external temperature range of more than 25.6 degrees here in the UK. ;) Also note that the Rain counter is 16 bits, the Wind direction byte includes flags for Low Battery and "Bad Direction", and there's an 8 bit CRC at the end of the message. Do you know which model of a ba...
by AllyCat
Sat Nov 25, 2017 5:13 pm
Forum: Cumulus 1
Topic: Rain calculator for WS-2080
Replies: 9
Views: 338

Re: Rain calculator for WS-2080

Hi, Did you know how they represent the temperature. it has 2-byte value Welcome to the forum. I believe the temperature is coded in pure binary, in tenths of a degree above -50 degrees C (eg. 0x01 0xF4 for 0 degrees C). Only the low nibble of the upper byte is used for temperature; I thought the up...
by AllyCat
Sat Nov 18, 2017 11:25 am
Forum: Cumulus 1
Topic: Data flatlining
Replies: 14
Views: 604

Re: Data flatlining

Hi, "0.3 degrees rise in 48 seconds" might sound like a reasonable limit, but it isn't. Firstly, several "messages" from the transmitter might be "lost" due to radio noise or interference of some type. The Console only assumes a "problem" if about 7 consecutiv...
by AllyCat
Fri Nov 17, 2017 10:21 am
Forum: Cumulus 1
Topic: Data flatlining
Replies: 14
Views: 604

Re: Data flatlining

Hi, Slightly different problem but possible the same cause. I get just the outside temperature flat-lining at around 7am each day. It was intermittent but is turning into very regular now. Strange thing is that it is only the Outside Temperature that flat-lines. You have checked the spike removal se...
by AllyCat
Mon Nov 13, 2017 9:36 pm
Forum: Homebuilt
Topic: Recommended wire to use
Replies: 1
Views: 230

Re: Recommended wire to use

Hi, Welcome to the forum. Are your sensors Analogue or Digital (e.g. I2C data bus) ? 10 metres it getting rather long for I2C (but possible). If analogue, what are the typical signal amplitudes and source impedance? How many cores do you need in each cable run (signal, power lines, earth, etc.)? The...

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