Welcome to the Cumulus Support forum.

Latest Cumulus MX V4 release 4.4.2 (build 4085) - 12 March 2025

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

Download the Software (Cumulus MX / Cumulus 1 and other related items) from the Wiki

If you are posting a new Topic about an error or if you need help PLEASE read this first viewtopic.php?p=164080#p164080

3.8.2 WLL No Dewpoint

From build 3044 the development baton passed to Mark Crossley. Mark has been responsible for all the Builds since. He has made the code available on GitHub. It is Mark's hope that others will join in this development, but at the very least he welcomes your ideas for future developments (see Cumulus MX Development suggestions).

Moderator: mcrossley

Post Reply
User avatar
Mperor
Posts: 8
Joined: Sun 12 Jan 2014 6:37 pm
Weather Station: Davis VP2 Plus and WLL
Operating System: Win Server 2016 on ESXi
Location: Bangor, ME, USA

3.8.2 WLL No Dewpoint

Post by Mperor »

Updating after _quite_ a while. I extracted 3.8.2 right over the top of my version 3.2.6. After some poking around I noticed the latest version did not display dewpoint.
I thought I did something wrong or it had been too long (and needed to do some multi-step upgrade process). Decided to take a backup and do a fresh install and reconnect to my WLL. Fresh install connecting to WLL (using automatic discovery) still doesn't show a dewpoint. When I roll back to the old version I get dewpoint. I'm wondering if maybe I found a bug?
User avatar
ConligWX
Posts: 1835
Joined: Mon 19 May 2014 10:45 pm
Weather Station: Davis vPro2+ w/DFARS + AirLink
Operating System: Ubuntu 24.04.1 LTS
Location: Bangor, NI
Contact:

Re: 3.8.2 WLL No Dewpoint

Post by ConligWX »

Hi there.

I have a WLL and running the 3.8.2. Due Point working here just fine.

I would however suspect coming from 3.2.6 and going straight to the latest would cause some issues.
User avatar
mcrossley
Posts: 14388
Joined: Thu 07 Jan 2010 9:44 pm
Weather Station: Davis VP2/WLL
Operating System: Bullseye Lite rPi
Location: Wilmslow, Cheshire, UK
Contact:

Re: 3.8.2 WLL No Dewpoint

Post by mcrossley »

My WLL calculates/shows dew point on v3.8.2 as well.

I'd like to see a run of 3.8.2 started with the -debug command line parameter and the resulting log file.

It sounds like you didn't copy over your Cumulus.ini file from 3.2.6 to the 3.8.2 folder, any reason for that? Re-read, your post, I see why.
User avatar
mcrossley
Posts: 14388
Joined: Thu 07 Jan 2010 9:44 pm
Weather Station: Davis VP2/WLL
Operating System: Bullseye Lite rPi
Location: Wilmslow, Cheshire, UK
Contact:

Re: 3.8.2 WLL No Dewpoint

Post by mcrossley »

I have found the issue, the dew point threshold limit (default 40C) is applied to installations configured to use Fahrenheit as if it were a Fahrenheit value.

As a work around please set your dew point limit value to 999 in the calibration settings until I get a patch pushed out.
User avatar
Mperor
Posts: 8
Joined: Sun 12 Jan 2014 6:37 pm
Weather Station: Davis VP2 Plus and WLL
Operating System: Win Server 2016 on ESXi
Location: Bangor, ME, USA

Re: 3.8.2 WLL No Dewpoint

Post by Mperor »

Perfect. Thank you! That did the trick. Never even would have looked there. If I had done the upgrade in the Winter that problem would have taken much longer to crop up. :lol:

Running as a service now, too. Thank you for adding that!
Post Reply