Hi,

I have a USB temperature monitor attached, the data from which the router uses and makes pretty graphs.

However when I use the 'show temperature' command on the command line (from where I will need to pull the data) I get output something along the lines of

' 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 6144, 6512, 6496, 6304, 6192, 6160, 6096, 6080, 6032, 6032, 6032, 6032, 6032, 5984, 5984, 5952, 5968, 5952, 5952, 5968, 6032, 6032, 5984, 5968, 5936, 5952, 5920, 5920, 5920, 5920, 5920, 5920, 5920, 5936, 5952, 5936, 5920, 5920, 5920, 5920, 5920, 5920, 5872, 5856, 5920, 5920, 5920, 5920, 5920, 5920, 5920, 5920, 5888, 5920, 5952'

Cannot figure out for the life of me how to convert this to C or F, anyone got any suggestions?

Many thanks

Scott

Hi Scott,
Couldn't resist having a look at this as I have the thermometer set up too, so curiosity got the better of me.
I ran the same command and looked at the Min & Max temperatures I could see on the graph, and think I've spotted the pattern.
The comma represents the time interval (I'm sure you'd guessed that) of the sample
Max temp = 27.63, max val = 7072
Min temp = 26.88, min val = 6880
diff in temp = 0.75, diff in val = 192
so, 3/4 degree C = val of 192, which rather curiously makes 1 degree C = val of 256 (does seem like a very likely possibility !)
Perhaps you could see if dividing the min/max by 256 gives you the temperatures you see in your graph ?
NOTE: I have no "correction" setting in the sensor settings.
Be curious to know what you find.
Cheers
Simon

Thanks for the explanation - that appears to be how it works on my 2860ac as well and putting those values into a chart in Excel via a CSV does show something like the router's temperature chart
I'm not sure what the time interval is yet though.

Hello admin3, thanks for your kind comments
I had assumed that the interval would tie up with the "Refresh Min(s)" setting in the Temperature Sensor Graph page, so decided to have a look.
More figures (sorry :lol: )
Router uptime = 22h16m = 1336 minutes
Refresh interval = 1m (default I think)
number of records from Show Temperature command = 1439
hmmmm, NOT what I was hoping to find BUT
The beginning of the Show Temperature output has a large number of "0," entries, curiously in my case I had 102 of these.
1439 - 102 = 1337
This is SO close to the 1336 figure I was expecting, that I'm not convinced it's coincidence ! ('though of course, I don't know what the "0,"s actually are !)
I had hoped to try changing the interval to, say, 5 minutes and see if I get something like 20 entries/hr, but I would want to reboot first to clear the logs and can't do that at the moment. However, I have a planned engineer visit in the next couple of days, so will use that opportunity to test this.
Cheers
Simon

Apologies for the delay getting back on this one....
From what I can see now, the 'show temperature' command returns 1440 entries (the number of minutes in 24 hours) and what I can see in the GUI ties up with this - I can see the last 24 hours worth of information, so I would guess this rolls ?
Changing the interval in the GUI made no difference to the entries in the 'show temperature' command.
So, my conclusions are:
Number/256 = temperature in degrees C
1440 entries are kept = 1 per minute for 24 hours
The log rolls over, so it's going to be a bit tricky to turn it into a useful "calendar history" since there is no timestamp anywhere to correlate
But, I am prepared to be proved wrong - had a look at an AP900 (which has got a thermometer on it) but I don't have the 'show temperature' command there
Cheers
Simon