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[aprssig] Remote Monitoring of Temperature

Scott Miller scott at opentrac.org
Fri Aug 17 23:00:04 UTC 2007


Yeah, there's a setting for a temperature offset.  The LM335 is pretty 
linear, but there tends to be a significant bias error that's largely 
dependent on the ADC reference voltage.

Just check the real temperature with a thermometer, calculate the 
difference, and enter that value in the config program.

Scott
N1VG

Andrew Rich wrote:
> we have a voice repeater - solar powered with a opentracker and HT
> 
> lets us know what is going on
> 
> need to cal the temp sensor in the opentracker
> 
> 
> ----------------------------------------------------------------------------
> Andrew Rich VK4TEC
> vk4tec at people.net.au <mailto:vk4tec at people.net.au>
> http://www.tech-software.net
> 
> 
> 
> 
> -----Original Message-----
> From: aprssig-bounces at lists.tapr.org
> [mailto:aprssig-bounces at lists.tapr.org]On Behalf Of Scott Miller
> Sent: Saturday, 18 August 2007 8:47 AM
> To: TAPR APRS Mailing List
> Subject: Re: [aprssig] Remote Monitoring of Temperature
> 
> 
> Or you could put a Tracker2 up there and have it take over the digi
> functions as well as the temperature monitoring.  You could also add a
> weather station and still get the internal temperature reading for site
> monitoring.
> 
> Scott
> N1VG
> 
> Matt Hunter wrote:
>> The opentracker has an onboard temperature sensor, as well as it
>> supports the Onewire weather stations and sensors. I'm hoping to setup
>> my wilderness camp up with a small solar setup to monitor the
>> temperature inside the camp this winter. A $100 solar panel, solar
>> charger, and a marine deep cycle battery will easily run the radio and
>> sensor equipment.
>>
>> Matt, KB1IKN
>>
>> Dave Sloan wrote:
>>> Hello,
>>>    We have a repeater that is on a remote mountain top (just over 10.000
>>> feet). We have several systems co-located in the same building with our
>>> repeater. The temperature of the building has been an issue in the past.
> We
>>> are adding another occupant to the building. I have suggested that we
>>> install a weather station (placing the temperature sensor inside) and
> then
>>> output the data using APRS. We have a digi that is already located at the
>>> location and so was thinking of using a different frequency. Does anyone
>>> have a suggestion for a frequency (maybe even on 440 might be best)? Any
>>> advice or suggestions will be appreciated.
>>>
>>> Thanks & 73,
>>> Dave N0EOP
>>>
>>>
>>> _______________________________________________
>>> aprssig mailing list
>>> aprssig at lists.tapr.org
>>> https://lists.tapr.org/cgi-bin/mailman/listinfo/aprssig
>>>
>>>
>>
>> _______________________________________________
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>> aprssig at lists.tapr.org
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>>
>>
> 
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