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[wxsig] RE: Question on T238 humidity

Will Beals will at beals5.com
Mon Jun 12 02:07:56 UTC 2006


(posting to WXSIG in case other folk may want to know too)

I must confess that I don't have a way to stop looking at a sensor.  If the
sensor no longer responds I don't broadcast data and give the opportunity to
remove its ID from the tables.  If a sensor gets replaced I give the
opportunity to reprogram in a new one, but I don't have a way to stop
reporting data from a sensor that is still there and giving (what appears to
be) valid data.

I seem to remember that question coming up on the wxsig reflector a long
while ago.  I went back and looked at my software and the the request was to
be able to remove the IDs of a sensor that was no longer present.  That
feature is incorporated.

I can suggest the following though.  Start the normal "sensor setup"
sequence.  When you get to the option to discover the humidity sensor,
unplug the 1-wire bus from the T238, then tell it to discover the humidity
sensor.  It won't find it and offer to erase the ID.  That should work.


-----Original Message-----
From: Russ Chadwick [mailto:russ at wxqa.com] 
Sent: Sunday, June 11, 2006 10:46 AM
To: will at beals5.com
Subject: Question on T238 humidity


In the T238, is there a way to remove the humidity measurement from what is
sent and still keep the temperature from the DS2438.  I have a situation
where the humidity measurement is stuck at 100% and that's what is
transmitted even though it's much drier than that.


Russ   KB0TVJ

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