[aprssig] APRS in-dash display

Lee Bengston lee.bengston at gmail.com
Sun Jan 17 11:25:02 CST 2016

On Jan 17, 2016 12:24 AM, "Greg D via aprssig" <aprssig at tapr.org> wrote:
> Hi folks,
> Picking up on a thread I started a while back...  Not sure if this will
lead to something permanent or not, but I tought I'd give it a try.
> I got access to the back of my car's in-dash unit, and the video input
connector.  It's meant for use with a back camera, which I currently don't
have (though it's on the wish list...).  Found a VGA to RCA adapter box,
and fired up APRSIS32 which was loaded on a small laptop.  Here's the
> http://home.wavecable.com/~ko6th/aprs_dash_display.jpg
> http://home.wavecable.com/~ko6th/aprs_laptop.jpg
> Given the difficulty, if not questionable legality, of controlling a
GUI-based laptop while driving, I think the next steps need to include:
> 1.  Replace the laptop and VGA adapter with a Raspberry Pi.  VGA output
is built-in, also much better power draw and small size. (The car is a
sports car, so no room for anything bigger.)

I think you meant RCA is built in, right?

> 2.  Replace APRSIS32 with YAAC (for Raspberry Pi compatiblity).
> 3.  Probably still need a keyboard for full control while parked, but add
some fixed key switches tied to keyboard shortcuts for the common stuff
while driving.  During the earlier exchange, Andrew figured it was a
"simple" matter of a Java library to bridge the swtiches to keyboard
shortcuts...  Hope he's right.
> 4.  The Pi will boot itself when the car turns on, but I need a way to
automatically safely power down the Pi when I turn the car off. Any ideas
on this?
A lot of vehicles don't shut the radio off immediately - will eventually
time out - and many will shut off once you open the door.  You could source
the power from a source that doesn't shut off right away and buy yourself
time to shut down gracefully.

Sounds like fun - my truck has a backup camera that I would not want to be
without.  :-)

Lee - K5DAT
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