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Date: Wed, 13 Jun 2007 15:39:25 -0400
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From: Tim Olson <Tim@5000feet.com>
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Subject: Re: [LML] Re: FreeFlight 1101/ Trutrak interface
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To clear up what I have, I don't have a freeflight...just
a pinpoint.  That may change later though.

As Alan said though, it's just a "Y" in the line so the
FreeFlight or Pinpoint or Crossbow, or whatever GPS you
use gets fed to both the Chelton and the TruTrak.  You
can split them at the source, or you can run it to the
chelton and split it before it goes in so you only have
a single wire running remote...either way should work.

Tim

Alan Adamson wrote:
> Um, unless I read the below incorrectly.  I'm not sure the wiring is
> correct.
> 
> See www.cheltonefispilots.com for the specific wiring diagram that you
> need... The way it should be wired is as follows.
> 
> FF -> Chelton (a Serial RS-232 connection)
> FF -> TT (a Serial RS-232 connection, this can either be "Y"'d at the FF or
> at the Chelton IDU, see the drawing mentioned above)
> Chelton -> TT (an ARINC 429 connection)
> 
> I'm pretty sure that all the TT AP's want both an ARINC *and* an RS-232
> connection.  ARINC is used for GPSS and GPSV (if so equipped), and the
> RS-232 spits out NMEA that the TT will use as a fall back.
> 
> Alan 
> 
> -----Original Message-----
> From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of
> Chatfield S. Daniel
> Sent: Wednesday, June 13, 2007 9:45 AM
> To: lml@lancaironline.net
> Subject: [LML] Re: FreeFlight 1101/ Trutrak interface
> 
> The FreeFlight is wired directly to the Chelton and the Chelton to the TT.
> There is no direct link from the FreeFlight to the TT...so if the Chelton is
> getting the GPS signal and the TT is not, the problem is between the Chelton
> and the TT.
> 
> Chat Daniel
> Super ES
> 
> -----Original Message-----
> From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Micah
> Froese
> Sent: Tuesday, June 12, 2007 9:53 PM
> To: lml@lancaironline.net
> Subject: [LML] FreeFlight 1101/ Trutrak interface
> 
> 
> I am unable to get my FreeFlight 1101 to talk to my TruTrak Digiflight II
> autopilot.  The TruTrak needs a GPS signal, and should be getting one
> 
> from the Pinpoint GADAHRS which is receiving the 1101 GPS signal.  (I am
> 
> not using the GPS on the Pinpoint)  The Chelton is getting the correct
> signals from the 1101.  Is there anyone out there that has a similar setup
> that is working?  (FreeFlight 1101, Chelton, and Trutrak)
> 
> Thanks,
> 
> Micah Froese
> 
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