Re: TI-H: New topic, since the list has been dead.
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Re: TI-H: New topic, since the list has been dead.
well, the company that makes the GPS sells one for about $25, but I was
hoping that I could make one for a fraction of the cost. They also have an
adaptor that works off the keyboard/mouse port of the laptop also. would
that possibly give off more power than the serial port?
-jeff
----- Original Message -----
From: Nick <zaphod@gis.net>
To: <ti-hardware@lists.ticalc.org>
Sent: Thursday, August 19, 1999 5:53 PM
Subject: Re: TI-H: New topic, since the list has been dead.
>
> Get a power adapter for AC voltage or build your own with a 723. Not near
> enough power to drive anything but LED's coming out of a serial port, and
> it's not really regulated well at all. If it's sucking your 4 AAA's dry,
> it's taking way too much power to be driven by the miniscule current a
> serial port puts out.
>
> Get a 6v lantern battery & clip the wires to the battery springs. Wear it
> on your belt. That ought to get you a couple days of power at least ;)
>
> --nick
>
> Nick Foster / Bistromath / zaphod@gis.net
> KeyID 2048/1024 0x663CB446
> 6CAF FFD4 F9BA 64BA ECF9 032E 7402 3886 663C B446
>
>
> ----- Original Message -----
> From: jeff dezur <jeffd@wwnet.net>
> To: <ti-hardware@lists.ticalc.org>
> Sent: Thursday, August 19, 1999 5:00 AM
> Subject: TI-H: New topic, since the list has been dead.
>
>
> >
> > I picked up a GPS reciever the other day, one that interfaces into the
> > serial port of my laptop, and sends the info across that. well, it only
> > lasts a little while on the batteries (4 AAA, which, not to my surprise,
> are
> > expensive... compared to others)... I popped it open, and of course,
> there's
> > not much in it, but, what I was wanting to know, is there a way, for me
to
> > set a signal high on the serial port, so I could get the required +5-6V
> that
> > it needs for power? I was reading around, and the serial port, according
> to
> > a few websites, gives off a +3-25V... which either will cause the GPS to
> not
> > do anything(lack of power) or fry in a cloud of smoke (25V), and end up
in
> > me blubbering over the $150 I spent for it... Since there's not an
extreme
> > amount of room, definitly not enough for a +5 voltage regulator, unless
> it's
> > surface mount, any ideas on how I could get it to work?
> >
> > -jeff
> > jeffd@wwnet.net
> >
> >
> >
> >
>
>
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