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[wxsig] Family Codes and ds2438

William Beals will at beals5.com
Fri Nov 19 15:16:07 UTC 2010


Michael and Pedro:

Cool on getting things working.  

Pedro:  The nice part about getting into the programming is you can go fiddle with the look and feel of the device.  If you put all the Spanish support in a separate text file, could it be added to the overall code offering?

will

-----Original Message-----
From: wxsig-bounces at tapr.org [mailto:wxsig-bounces at tapr.org] On Behalf Of Michael Dzado
Sent: Thursday, November 18, 2010 3:20 PM
To: 'TAPR Weather Station SIG Mailing List'
Subject: Re: [wxsig] Family Codes and ds2438

Hi Pedro

Thanks for the information.

Cheers
Michael

-----Original Message-----
From: wxsig-bounces at tapr.org [mailto:wxsig-bounces at tapr.org] On Behalf Of Pedro Motilla
Sent: Thursday, November 18, 2010 3:40 PM
To: TAPR Weather Station SIG Mailing List
Subject: Re: [wxsig] Family Codes and ds2438

Hi Michael:

I can only tell about what i have found.

Humidity: I have build my own sensor with a ds2438's clone (buyed from
ebay) - if you can get an original Dallas 2438 would be better, Humidity
sensor is is a HIH-4000-004, buyed from mouser, building is
straightforward, just the ds2438, Humidity sensor, a 7805 voltage
regulator, and a resistor.

Hard part is to change code to adquire data from the clone, but it is
solved and now very simple.

For now it works, now I have to tune it and adjust, when it is ok, I
will make a small pcb, an outdoor shield, etc.

Best regards.

Pedro.

El jue, 18-11-2010 a las 09:54 -0600, Michael Dzado escribi�:
> While you are on this topic.  Can you recommend which 1 Wire products are
> compatible for use with the T238+?  I am looking for a Humidity/Temp sensor
> and a barometer.
> 
> I purchased a Humidity/Temp sensor from AAG, but it has since failed.
> I purchased a barometer from hobby boards and it is not compatible.  I think
> it uses the ds2438.
> 
> Thanks and let me know what you think.
> Michael
> AC0HB
> "All weather is local"
> 
> -----Original Message-----
> From: wxsig-bounces at tapr.org [mailto:wxsig-bounces at tapr.org] On Behalf Of
> William Beals
> Sent: Wednesday, November 17, 2010 11:11 PM
> To: 'Pedro Motilla'
> Cc: wxsig at tapr.org
> Subject: Re: [wxsig] Family Codes and ds2438
> 
> Pedro:
> 
> You have the right idea.  I had actually written you a reply several days
> ago that I "discovered" in my drafts folder.  Let me review the two emails
> and get back to you in a day or so.
> 
> will
> 
> -----Original Message-----
> From: Pedro Motilla [mailto:pedrolo2 at pedrolo.com] 
> Sent: Wednesday, November 17, 2010 2:43 PM
> To: William Beals
> Cc: wxsig at tapr.org
> Subject: Family Codes and ds2438
> 
> Hi Will:
> 
> I tried to solve by myself the problem with ds2438's clone.
> 
> What i have done:
> 
> 1- downloaded all code from your website.
> 2- downloaded casm08z.exe from pemicro
> 3- I walked trhough the code, and found 2 files with related entries to
> family code 26:
> 	wx08.asm, and humid.asm
> 4- Change any prefix 26 into A6
> 5- compile the code
> 6- upload to the 238+ with mon08 program.
> 
> When done, t238+ works, so compile process went good, (it did not give
> any bad message), but humidity keeps on not being showed on the screen.
> 
> What i am doing bad?
> 
> Did I miss any other place to tune?
> 
> Is this process right?
> 
> Thanks in advance.
> 
> EA5BFT
> Pedro.
> 
> 
> 
> 
> 
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> 
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