phebe38(at)hotmail.com
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 Posted: Sat Dec 16, 2006 3:02 pm Post subject: AeroElectric-List Digest: 3 Msgs - 12/15/06 |
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could you please unsubscribe me i dont know how, by the way i appreciate
your willingness to share knowledge.
[quote]From: AeroElectric-List Digest Server <aeroelectric-list(at)matronics.com>
Reply-To: aeroelectric-list(at)matronics.com
To: AeroElectric-List Digest List <aeroelectric-list-digest(at)matronics.com>
Subject: AeroElectric-List Digest: 3 Msgs - 12/15/06
Date: Fri, 15 Dec 2006 23:55:27 -0800
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AeroElectric-List Digest Archive
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Total Messages Posted Fri 12/15/06: 3
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Today's Message Index:
----------------------
1. 08:14 AM - Re: Heat shrink labelling (Joe & Jan Connell)
2. 07:39 PM - Re: Annunciator Panel Update? (Alan K. Adamson)
3. 08:37 PM - Re: Annunciator Panel Update? (Doug Windhorn)
________________________________ Message 1
_____________________________________
Time: 08:14:20 AM PST US
From: "Joe & Jan Connell" <jconnell(at)rconnect.com>
Subject: RE: Heat shrink labelling
I used Microsoft Word to print all my labels using
a 6 pitch font. Rather than a numbering scheme,
I used full text describing the wire. Examples below:
(3) DYNON D10A GROUND
(1) DYNON D10A TO ESSENTIAL BUSS 12V +
(2) DYNON D10A KEEP ALIVE POWER
With this format I know the pin number, the purpose, and the destination.
I
cut the label, lay it on the wire, slide a piece
of heat shrink over the two, and heat briefly. For hard-to-
read locations I use two labels (one reversed.) It's a bit
time consuming but works well...
Joe Connell
RV-9A N95JJ
________________________________ Message 2
_____________________________________
Time: 07:39:30 PM PST US
From: "Alan K. Adamson" <aadamson(at)highrf.com>
Subject: RE: Annunciator Panel Update?
Ok, I've been doing a bit more thinking about this widget.... I'm really
trying to avoid designing the kitchen sink into it, and also I don't want
the complexity of multiple modules that all have to be interfaced.
I'm applying the KISS principle if at all possible.
I've nailed down a feature list a bit further. This is just major features
and is broken out by Hardware, and Hardware/Software. I've also included a
"future additions" section to keep those in perspective.
*If* we were to do a little virtual design here. Maybe we could nail down
a
final V1 feature set, work up a prospective component list. From there we
could scratch out a schematic and then obviously, we could get some
prototypes done and build a couple and see how they work.
Single sided, or at the most double sided would be preferred. Concerns
that
we'll have to watch for is RFI/EMI and how to keep that to a minimum.
Hardening this device should not be in the cards just yet, unless that can
be done easily.
At this point, we should work to a prototype.
Ok, so here's my feature list. Feel free to comment on it and if there are
questions, let me know. One note, this should be designed to work in both
metal and composite airplanes (that means we'll have to make sure grounding
is available and adequate.
Since the original round, I did think of a couple of nice to haves.
Rick's ideas muting and was a good one, that lead me to thing about
priorities and overrides. These can be handled in software.
Dimming was another good idea and the inclusion of some PWM for driving
led's etc. (we'll really have to watch EMI/RFI from those!)
This should be designed with PC tools that the average joe can afford if we
are to work in a collaborative environment with and around this.
So, what do ya think?
Hardware
a) 8 control inputs (can be active hi, active lo, or strobed)
b) 8 control outputs (can be active hi, active lo, or strobed)
c) microprocessor control
d) flash memory (perhaps processor embedded)
e) serial port output (output strings for external usage - e.g. Engine
monitor display, EFIS display, etc)
f) serial port input (command processor for configuration, s/w upload, etc)
g) 8 low level audio inputs
h) 3 low level audio outputs
i) audio tone generator
j) 9-32v DC power supply
Hardware/Software
a) test circuitry (lights, processor, logic, etc)
b) smart mute circuitry (mute until remedy, then re-arm, etc)
c) smart dimming circuitry (PWM for LEDs, ambient light sensor, for auto
adjust, etc)
d) event priorities for both control outputs and audio outputs (can be
linked or combined via configuration)
e) queued events with queue clearing logic (would need to integrate with
event priorities)
Future additions
a) recorded or recordable voice messages in place of tone generated sounds
b) ethernet or some other form of faster interface technology
Obviously, the number of inputs and outputs (gazintas and gazoutas) are
arbitrary, but 8 is a nice micro number 
Alan - wanna be designer at large ;>
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