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Latest Cumulus MX V3 release 3.28.6 (build 3283) - 21 March 2024

Cumulus MX V4 beta test release 4.0.0 (build 4019) - 03 April 2024

Legacy Cumulus 1 release 1.9.4 (build 1099) - 28 November 2014
(a patch is available for 1.9.4 build 1099 that extends the date range of drop-down menus to 2030)

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Search found 7 matches

by John Timson
Mon 16 Jan 2017 10:18 am
Forum: Homebuilt
Topic: Ventus W820 problems
Replies: 0
Views: 3273

Ventus W820 problems

Hi Guys I am back again after about 2yrs. I purchased a Ventus W820 station and have had a lot of problems with it and I have only had it a month. Water leaked into the circuit board section and down to the temp and humidity sensors and stopped transmitting when the temp was low at night. Waterproof...
by John Timson
Sat 26 Sep 2015 10:38 am
Forum: Homebuilt
Topic: Temperature sensor thermistors
Replies: 2
Views: 2666

Re: Temperature sensor thermistors

Thanks for the info Alan.On the Maplins HP1000 station I could correct the sensor readings on the display unit.Thanks John.
by John Timson
Fri 25 Sep 2015 3:51 pm
Forum: Homebuilt
Topic: Temperature sensor thermistors
Replies: 2
Views: 2666

Temperature sensor thermistors

I have a problem,most temperature sensors use the standard 2wire pin head thermistor which I can calibrate with a resistor for correct temp readings.But in my WH 1081 sensors they don't use them,but I see IC about 8 pins that must have a thermistor built in,Can any of you electronics buffs tell me i...
by John Timson
Tue 22 Sep 2015 10:25 am
Forum: Homebuilt
Topic: Wind speed sensor
Replies: 2
Views: 2676

Re: Wind speed sensor

Hi Alan.I am thinking of scrapping my current station and buying a OS WMR 88 which has a up to date spec.The best weather station I had was a Maplins HP2000 with a fantastic display unit,But the main sensor unit all self contained above was badly made and gave up the ghost in a very heavy storm. I w...
by John Timson
Mon 21 Sep 2015 11:54 am
Forum: Homebuilt
Topic: Wind speed sensor
Replies: 2
Views: 2676

Wind speed sensor

Does anyone know if fitting two magnetic reed switches at 180degs to each other would double the wind speed reading.My weather station reads half of what it actually is most of the time. Also do the different cup sizes make much difference to wind speed readings.I tend to modify most sensors to make...
by John Timson
Sat 19 Sep 2015 10:07 am
Forum: Homebuilt
Topic: My Weather Stations
Replies: 4
Views: 3390

Re: My Weather Stations

Hi to you.I would love to purchase a Davis weather station ,but here in the UK they are very expensive.In the meantime I like to modify cheaper stations to make them more accurate as I am a retired electronics engineer.
It gives me hours of pleasure taking the sensors apart and calibrating them.John
by John Timson
Fri 18 Sep 2015 10:43 am
Forum: Homebuilt
Topic: My Weather Stations
Replies: 4
Views: 3390

My Weather Stations

Hi Guys.I would like to introduce my self as I am new on here,My name is John and I live in Eastbourne in the UK East Sussex.I am 71yrs old and have had lots of different types of weather stations over 20 yrs or so.I also keep KOI as a hobby.At the moment I have a WH1081 which to be honest has to be...