meteohub.de

I've found that even with USB sticks that claim to have error correction, they eventually degrade and lead to data corruption and most recently, failure of the unit. I set up something to run an fsck -c on the data volume once a week, but unfortunately you can't do that with the root filesystem and ...

I checked the WMR, it was showing the dead sensor with "---" as the wind speed.

Naturally, a reboot of the meteohub cleared the bogus data upload, but hopefully there's an easy fix within the app.

The only thing in my case that it needs to stop sending is the wind data, all the other sensors are working fine.

I'll have to check when I get home as to whether it might be a bug in the WMR968, not Meteohub - if the WMR is sending the bogus data, then there's not much Meteohub can do about it ...

http://www.wunderground.com/weatherstation/WXDailyHistory.asp?ID=KNHMERRI11&day=19&year=2008&month=12

On December 19, at about 5:30pm, my WMR968 lost the signal from the anemometer for some unknown reason, and as a result, the Meteohub software has been uploading the last-known average windspeed ...

Hello,

We had an ice storm here in New Hampshire last Friday, and as a result my internet connection was down for three days.

You can see the moment that the internet connection went dead at the graph here - about 3:30am.

(My power was out too, but we have a backup generator at home so the ...

What kind of flash drive are you using? I had a KingMax 2GB, and two separate times the errors on the flash drive wedged the /data partition into read-only mode and forced me to run a bad-block check on it in order to get it back online.

I just switched to a Kingston 4GB flash drive, and while it ...

Yep, that's about the size of it.

I'll see if I can make some time this weekend to rewrite the clone script in Perl, and set up a progress window in the web browser.

Its failure modes aren't really very good.

For instance, if the system doesn't recognize that the /dev/sdb device is not available, it will copy the entire /data partition over to /mnt on the root filesystem of the main memory stick, potentially filling it up and wedging things.

The clone script ...

Well, one approach could be to set up public-key-only authentication, so that the password involved is only processed on your machine, to decrypt the private key. So that means there's no actual password attached to the account, only to your private key, thus nothing for an attacker to guess at ...

Thanks for the reference! My Meteohub came with a practically nonexistent manual from Ambient, so I appreciate your information.

Is it necessary, when cloning, for the new drive to be in the "Disk 1" port on the NSLU2? Currently, my weather station is attached to Disk2, and my flash disk is ...

Is there an easy way to switch from a 2GB to a 4GB flash drive?

As far as I can tell at this point, I'd have to image a 4GB memory stick with the new Meteohub software, and then transfer the data over.

I assume that the "clone" function will only clone to the same size flash drive, as the ...

I'd be very concerned about turning it off entirely - I've twice had bugs crop up on my flash drive that blocked the web interface from starting up. If I'd not been able to use SSH, I would have had to do a clean reinstall of the system, wiping everything on the drive.

Nope, didn't realize this was available, or necessary - never thought of the possibility of a problem with the memory stick, so I never did an off-system backup except for the firmware upgrade. I'll definitely look into it now, though.

I'm using the KingMax stick that was supplied with the unit by Ambient Weather. They're tiny, but also pretty cheap.

I'll try the /dev/zero suggestion, thanks - I think I'm in good shape with the /data filesystem now since I ran an fsck -cc (read/write bad-block scan), so what it found is marked ...

Okay, after a rather odd wedge perhaps caused by trying to log in while badblocks was running, the system is back up and running with a writeable /data and looks okay now.