Re: [Aus-soaring] USB power for Ipaqs

Sun, 13 Apr 2008 01:06:33 -0700

Don,

It looks like you have got the right advice from Robert.  I have recently been through the exercise and have placed a 12v to 5.3v DC converter between the glider 12 volt supply (a pair of 7.2 Ah gel cells) and a fused/switched 2.1 mm pin socket mounted in the panel.  This socket normally provides power for the iPAQ 5550, but can also be used to run (or charge) a Blue-Tooth GPS or my CDMA mobile phone, depending on priorities at the time.  If you're going to put in a system make it as flexible as possible.

Regards,

Geoff V

At 05:29 PM 13/04/2008 +1000, Don Woodward wrote:

Hi Robert,
 
Thanks for your advice. The HP ipaq I have also does Tom Tom navigation on my car so it spends most of its time on my windscreen. Because it already has an internal gps I don't intend connecting an external one to it. The USB currently plugs into a cigarette lighter adaptor and then runs of my cars 12 volts. I want to plug it into my glider but without the cigarette adaptor.
 
I think I need to find what voltage is powering it first.
 
Regards
Don.
 
 
----- Original Message -----
From: Robert Hart
To: Discussion of issues relating to Soaring in Australia.
Cc: [EMAIL PROTECTED]
Sent: Sunday, April 13, 2008 4:59 PM
Subject: Re: [Aus-soaring] USB power for Ipaqs

Don Woodward wrote:
Hi all,
 
I'm in the process of putting an ipaq into my glider. My ipaq uses a USB cable for all power/data etc.. It has the smaller plug on the unit and the larger (normal) USB plug into the power source. I want to chop off the larger plug so I can run the lead straight off the panel.
 
The USB cable has copper, silver, red, black, green and white wires. It's probably obvious but "just in case" can someone please confirm that the black is negative power and the red is positive power? I don't want to blow my HP Ipaq up, I have been caught out before!
   can
Don

You need to be very careful - all iPaqs that I know about do NOT use 12v - they use about 5.3v (iirc). So you cannot connect the glider 12v supply to power your iPaq - at least not directly.

What I did for my (original) set up was
  • Take the GPS and iPaq you will be using to someone like Johnny Appleseed - (they are here in Brisbane and I think elsewhere as well).

  • From the dealer, buy a premade cable that plugs into your GPS and your iPaq - and also has a 12v car charger to provide power to both. If you are using FLARM as the source, you don't have to power that specially, but you will need to do a bit of soldering to get the data from the FLARM to the iPaq.
  • Remove the innards of the 12v to 5v power supply and buy a small project box from Dick Smith to hold this. Connect the glider 12v on the input side and you are done. 


    • -- 
Robert Hart                                  [EMAIL PROTECTED]
+61 (0)438 385 533                           http://www.hart.wattle.id.au
    _______________________________________________
    Aus-soaring mailing list
    [email protected]
    To check or change subscription details, visit:
    http://lists.internode.on.net/mailman/listinfo/aus-soaring

    _______________________________________________
    Aus-soaring mailing list
    [email protected]
    To check or change subscription details, visit:
    http://lists.internode.on.net/mailman/listinfo/aus-soaring

    No virus found in this incoming message.
    Checked by AVG.
    Version: 7.5.519 / Virus Database: 269.22.13/1375 - Release Date: 12/04/2008 



    
No virus found in this outgoing message.
Checked by AVG.
Version: 7.5.519 / Virus Database: 269.22.13/1375 - Release Date: 12/04/2008

    _______________________________________________
Aus-soaring mailing list
[email protected]
To check or change subscription details, visit:
http://lists.internode.on.net/mailman/listinfo/aus-soaring

    Reply via email to