From jeff at lokiresearch.com  Sat Mar 14 21:07:15 2009
From: jeff at lokiresearch.com (Jeff Taylor)
Date: Sun, 15 Mar 2009 00:07:15 -0400
Subject: [ARTS] [Fwd: ARTS 2]
Message-ID: <49BC7EF3.5030703@lokiresearch.com>


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From: Mike Whorley <mikewhorley15 at yahoo.com>
Subject: ARTS 2
Date: Sat, 14 Mar 2009 19:58:16 -0700 (PDT)
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From christian at snet.net  Sun Mar 15 08:59:27 2009
From: christian at snet.net (Chris)
Date: Sun, 15 Mar 2009 08:59:27 -0700 (PDT)
Subject: [ARTS] [Fwd: ARTS 2]
Message-ID: <698214.1515.qm@web82405.mail.mud.yahoo.com>


I hads a similar issue and it was as simple as chnaging the battery from  a 9V to a cell pack that provides more current. 

Try: 
Radio Shack
RC Car Battery Pack and Charger 
Model: 23-432
Catalog #: 23-432

--- On Sun, 3/15/09, Jeff Taylor <jeff at lokiresearch.com> wrote:

> From: Jeff Taylor <jeff at lokiresearch.com>
> Subject: [ARTS] [Fwd: ARTS 2]
> To: "Erik Hall" <ehall at ozarkaerospace.com>
> Cc: arts at lokiresearch.com
> Date: Sunday, March 15, 2009, 12:07 AM
> _______________________________________________
> ARTS mailing list
> ARTS at lokiresearch.com
> http://mx1.blastzone.com/mailman/listinfo/arts


From ehall at ozarkaerospace.com  Tue Mar 17 20:28:17 2009
From: ehall at ozarkaerospace.com (Erik Hall)
Date: Tue, 17 Mar 2009 23:28:17 -0400
Subject: [ARTS] ARTS 2
References: <737095.20391.qm@web110705.mail.gq1.yahoo.com>
Message-ID: <8B5C0A6BD6674F07A69ACED5EB49DEBD@e1501>

Mike,

The radio module sucks a LOT of power when trnsmitting. I typically fly it wth a rechargable (rechargeable is GOOD!!) 9.6v RC car battery back. The one I use is from Radio Shack. See:
http://www.radioshack.com/product/index.jsp?productId=2103206

They also carry a NiMH version of the same battery pack. These will run the telem system for a few hours.

Glad to help!

Thanks,
Erik


  ----- Original Message ----- 
  From: Mike Whorley 
  To: ehall at ozarkaerospace.com 
  Sent: Monday, March 16, 2009 9:59 PM
  Subject: RE: ARTS 2


        Erik,

         I changed the batteries on the board last night. I put it into gps mode and connected with hyper terminal and got data for a short period of time. When I tried to connect the second time and I could not.

         I checked the voltage output on the receiver and it was at 5.3V. I then checked the voltage output from the regulator and it was at 4.2. Looks like I found the problem. After replacing the batteries on the receiver everything worked fine.

         I now can get everything to work with both Vista and XP.

         What do you suggest for powering the transmitter board. Two 9V wired in parallel or is there something better?

         Appreciate you talking the time to help us trouble shoot.

        Thanks,

        Mike Whorley

        --- On Mon, 3/16/09, Erik Hall <ehall at ozarkaerospace.com> wrote:


          From: Erik Hall <ehall at ozarkaerospace.com>
          Subject: RE: ARTS 2
          To: "'Mike Whorley'" <mikewhorley15 at yahoo.com>
          Cc: Jeff at lokiresearch.com
          Date: Monday, March 16, 2009, 5:42 PM


          Mike,



          One more thing: Check the voltage input at the battery terminals on the transmitter board while it is powered up and transmitting. It needs to be above 8.6v.



          Thanks,

          Erik








----------------------------------------------------------------------

          From: Erik Hall [mailto: ehall at ozarkaerospace.com ] 
          Sent: Monday, March 16, 2009 6:38 PM
          To: 'Mike Whorley'
          Subject: RE: ARTS 2



          Yes, if the switch is set for GPS, you should see NMEA sentences if you use HyperTermial.



          Good test, please let me know how it goes.



          Thanks,

          Erik






----------------------------------------------------------------------

          From: Mike Whorley [mailto:mikewhorley15 at yahoo.com] 
          Sent: Sunday, March 15, 2009 4:43 PM
          To: ehall at ozarkaerospace.com
          Subject: RE: ARTS 2



                I didn't mention it but I made sure it was set to ARTS. 



                If connected to hyperterminal and set to gps should I be able to see the gps (NMEA?)sentences?

                --- On Sun, 3/15/09, Erik Hall < ehall at ozarkaerospace.com > wrote:


                  From: Erik Hall < ehall at ozarkaerospace.com >
                  Subject: RE: ARTS 2
                  To: "'Mike Whorley'" <mikewhorley15 at yahoo.com>
                  Cc: Jeff at lokiresearch.com
                  Date: Sunday, March 15, 2009, 9:18 AM

                  Mike,



                  First thing, make sure the switch on the transmitter is in the ARTS position. If it is in the GPS position, then the data from the GPS is sent directly to the radio with no ARTS interaction at all, just as you describe. Also, with the switch in the GPS position you will not get any data in RadioRx (RadioRx is only for ARTS mode), and you will need a ?regular? GPS program like VisualGPS.



                Thanks,

                Erik








----------------------------------------------------------------

                From: Mike Whorley [mailto:mikewhorley15 at yahoo.com] 
                Sent: Saturday, March 14, 2009 10:58 PM
                To: Jeff at lokiresearch.com
                Subject: ARTS 2



                      Jeff,



                       I am having problems connecting the ARTS with the transmitter/receiver. I have tried using both Vista and XP.



                       Using Vista I change the config file to the correct com port. This seems to work with the altimeter because I can do diagnostics except the radio check and can configure the altimeter. 



                       There is no data in the combo box for com port when I do it this way.



                       On the receiver end there is no real way of telling if the com port is working or not. If I change the config file for the correct com port I do not get the error message and at the bottom it displays the com port and baud rate instead of comport error.



                      With XP I get info in the combo boxes and no comport errors. The altimeter works fine.



                      Things I have checked:



                       Baud Rate - 9600 bps as per unit Also checked baud rate with device manager.

                      Channel settings -  checked all. Made sure both the units where on the same channel.

                      Device drivers - All device drivers are installed 



                       I can get the TX led to brighten and dim per transmitting. Likewise I get the receiver led to blink per receiving.  I can not get the radio check in the diagnostics to work nor can I get anything with the Radio RX program.



                       Is there something I am missing?



                      Thanks,



                      Mike Whorley
                     


               



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From jarrett.gorin at centerpointdevelopmentpartners.com  Mon Mar 30 13:09:34 2009
From: jarrett.gorin at centerpointdevelopmentpartners.com (Jarrett Gorin, AICP)
Date: Mon, 30 Mar 2009 16:09:34 -0400
Subject: [ARTS] Operating Height Limit
Message-ID: <6A4E9D4D2E587A48B8EFEDC38217150A048A7E6B@mse15be2.mse15.exchange.ms>

Can anyone confirm what the peak altitude above sea level is that the
ARTS2 can record data for?  I assume if you exceed this, the ARTS2 will
continue to function, but that it might have gaps in the logged data.

 

I am finishing construction on a 54mm minimum diameter all-carbon-fiber
kit that will readily exceed 25,000 feet so I want to confirm that the
ARTS2 is going to work in this for flights over that height.

 

Anyone able to shed some light on this?

 

Thanks in advance.

 

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From christian at snet.net  Mon Mar 30 14:22:49 2009
From: christian at snet.net (Chris)
Date: Mon, 30 Mar 2009 14:22:49 -0700 (PDT)
Subject: [ARTS] Operating Height Limit
In-Reply-To: <6A4E9D4D2E587A48B8EFEDC38217150A048A7E6B@mse15be2.mse15.exchange.ms>
Message-ID: <850124.42101.qm@web82404.mail.mud.yahoo.com>



I've only read that if you pass the operating range that it flat lines at the maximum supported limit until it passes back down to the normal operating range. It was also rumored that it throws off the sample rate.

I fly low n slow and do not think I'd hit the top end supported altitude.


It is supposed to work normally since you have a long time to fall back to the selected main deployment altitude where you most definitly in operational range. I think that is pure barometic readings for main deployment. 




--- On Mon, 3/30/09, Jarrett Gorin, AICP <jarrett.gorin at centerpointdevelopmentpartners.com> wrote:

> From: Jarrett Gorin, AICP <jarrett.gorin at centerpointdevelopmentpartners.com>
> Subject: [ARTS] Operating Height Limit
> To: arts at lokiresearch.com
> Date: Monday, March 30, 2009, 4:09 PM
> Can anyone confirm what the peak altitude above sea level is
> that the
> ARTS2 can record data for?  I assume if you exceed this,
> the ARTS2 will
> continue to function, but that it might have gaps in the
> logged data.
> 
>  
> 
> I am finishing construction on a 54mm minimum diameter
> all-carbon-fiber
> kit that will readily exceed 25,000 feet so I want to
> confirm that the
> ARTS2 is going to work in this for flights over that
> height.
> 
>  
> 
> Anyone able to shed some light on this?
> 
>  
> 
> Thanks in advance.
> 
>  
> 
> _______________________________________________
> ARTS mailing list
> ARTS at lokiresearch.com
> http://mx1.blastzone.com/mailman/listinfo/arts

From jeff at lokiresearch.com  Mon Mar 30 21:10:44 2009
From: jeff at lokiresearch.com (Jeff Taylor)
Date: Tue, 31 Mar 2009 00:10:44 -0400
Subject: [ARTS] Operating Height Limit
In-Reply-To: <6A4E9D4D2E587A48B8EFEDC38217150A048A7E6B@mse15be2.mse15.exchange.ms>
References: <6A4E9D4D2E587A48B8EFEDC38217150A048A7E6B@mse15be2.mse15.exchange.ms>
Message-ID: <49D197C4.2060803@lokiresearch.com>

Jarrett Gorin, AICP wrote:
>
> Can anyone confirm what the peak altitude above sea level is that the 
> ARTS2 can record data for?  I assume if you exceed this, the ARTS2 
> will continue to function, but that it might have gaps in the logged data.
>
>  
>
> I am finishing construction on a 54mm minimum diameter 
> all-carbon-fiber kit that will readily exceed 25,000 feet so I want to 
> confirm that the ARTS2 is going to work in this for flights over that 
> height.
>
>  
>
> Anyone able to shed some light on this?
>
>  
>
> Thanks in advance.
>
>  
>
The baro altitude on the ARTS2 will max out at approximately 50,000 feet 
above sea level.  When you exceed this, the ARTS2 continues to function 
normally, but the baro data will be pegged at 50,000 until the rocket 
descends below that altitude.

I used two ARTS2 units in the Proteus 6 rocket that flew to over 80,000 
feet last fall.  If you are interested, you download the flight data 
here: http://www.lokiresearch.com/Documents/Proteus6.xls  That flight 
took place at Black Rock, where ground level is a little over 4,000 feet 
above sea level, thus the baro data maxed out at about 46,000 feet AGL.

-Jeff

-- 

Jeffrey S. Taylor, Ph.D.
President
Loki Research, LLC
Arsenal Business Center
5301 Tacony Street, Box 210
Philadelphia, PA 19137
Office: (215) 288-0500
Cell: (203) 500-2678