Author Topic: Adding Temp Sensor  (Read 10589 times)

wurzelmac

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Re: Adding Temp Sensor
« Reply #15 on: July 04, 2015, 12:30:47 PM »
Ok,

to bring this one to an end here is my final experience: Part# 6372 arrived, installation/recognition no problem at all both with Console and WeatherCat.

And here is for what I use this additional temp sensor: I was always curious about the inside temperature of my self-made webcam-housing. During the summer months I think it is very hot in there, and during winter with outside temps lower than -15?C I think the housing is far below zero, too! So this Canon Powershot G10 did a good job during the past few years (and hopefully it does some more years  ;D ).

Cheers,
Reinhard

Temperature Station above Cam-housing, overview:




Close-up:

Reinhard


Wildwood

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Re: Adding Temp Sensor
« Reply #16 on: July 04, 2015, 03:07:02 PM »
I all - Davis uses the same motherboards for all the transmitting units (VP series). I have swapped them around trying to get the best setup.  If you add extra Temp the resolution drops off to +- 1 unit [ 88.1 reads 88 and 88.6 reads 89] this is a oversight from Davis as they think you don't care about tenths for other locations. My location I have the ISS 8' above the roof and a 2nd temp/humid at the correct 5'.

Wildwood

Blicj11

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Re: Adding Temp Sensor
« Reply #17 on: July 06, 2015, 05:53:13 PM »
Reinhard, thanks for the photos and the explanation, both of which I found interesting.
Blick


wurzelmac

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Re: Adding Temp Sensor
« Reply #18 on: July 06, 2015, 06:24:01 PM »
Wildwood, no problems here with the decimals in ?C, looking pretty good. I added this temp to my webcam-picture spelling *Innentemperatur Kamera......* (translated as *inside temp of cam- and electronic housing*)

Blick:  [tup]

Cheers,
Reinhard
Reinhard


LesCimes

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Re: Adding Temp Sensor
« Reply #19 on: July 08, 2015, 08:26:49 PM »
Quote
If you add extra Temp the resolution drops off to +- 1 unit [ 88.1 reads 88 and 88.6 reads 89]

Yeah, I find it a bummer, too, that the extra temperature sensor doesn't show tenths of a degree. I suppose Davis is trying to cut cost on the electronics or software development? It is a bit amateurish I think.

Bull Winkus

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Re: Adding Temp Sensor
« Reply #20 on: July 09, 2015, 04:45:37 AM »
It probably has to do with bandwidth utilization without interference, but that's only a guess.

 [cat]
Herb

elagache

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Hardware design 1 byte data type. (Re: Adding Temp Sensor)
« Reply #21 on: July 09, 2015, 10:48:12 PM »
Dear Herb and WeatherCat computer hardware oldtimers,

It probably has to do with bandwidth utilization without interference, but that's only a guess.

According to Stu (and was already my hunch as well,) the real problem is that Davis insisted on using only 1-byte integers for the secondary temperature sensors.  I don't know when Davis designed this hardware architecture, but the last time anything used 1-byte data types was the Z80 computers that briefly existed before the arrival of the IBM PC.  So to call this prehistoric information age technology seems appropriate!

Cheers, Edouard  [cheers1]

LesCimes

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Re: Adding Temp Sensor
« Reply #22 on: July 10, 2015, 12:01:11 AM »
Davis does seem slow to update the technology, though I think their new anemometer design has improved tech. Wish they would update the rain gauge sensor technology as well. I'd consider getting a new VP 2 is the whole ISS was updated with better tech. Meanwhile, the old ISS is plugging away satisfactorily. (Have had to make repairs two or three times in ten years.)