Today's Message Index:
----------------------
1. 08:16 AM - VMS capacitance fuel probes (Linda Walker)
2. 08:59 AM - Re: VMS capacitance fuel probes ()
3. 09:33 AM - Re: Century 1 Autopilot Musings (Peter Mather)
4. 11:21 AM - Re: OS Wig-Wag Project (gregmchugh)
5. 03:05 PM - Re: Re: OS Wig-Wag Project (Robert L. Nuckolls, III)
6. 04:09 PM - Re: OS Wig-Wag Project (gregmchugh)
7. 08:32 PM - Re: battery kits (Bill)
Message 1
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| Subject: | VMS capacitance fuel probes |
Is anyone aware of a compatible capacitance fuel probe for the Vision Micro
systems product?
One of mine is no longer working.
Any help much appreciated.
Patrick Elliott, Long-EZ, G-LGEZ
Message 2
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| Subject: | VMS capacitance fuel probes |
Patrick,
If you mean "familiar with", yes lots of us use them. I use the Dynon display rather
than the VM display, but the capacitance senders are the same. Some things
to check...
1. Connections to the senders. Assuming you have the 3 wire tube type, remove and
check all connections for continuity and resistance. They may have loosened
or the ground quality has lessened over time. Be sure none of the connectors
have failed or is somehow compromised. A common problem.
2. Check the out voltage on the white wire (sender signal) and see if the coincides
with the voltage recorded when you did your calibration. You should have
that written down somewhere.
3. If all that checks out, it's probably the VM display. Internally (my converter
is external) they convert the capacitance voltage to dc voltage which is how
the unit reads the value.
When you do your test you will be reading the capacitance voltage which will need
to be converted to dc voltage to verify.
If you need an external capacitance voltage converter, let me know - there is a
guy in Texas that makes them.
Glenn
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Linda Walker
Sent: Thursday, June 07, 2012 11:11 AM
Subject: AeroElectric-List: VMS capacitance fuel probes
Is anyone aware of a compatible capacitance fuel probe for the Vision Microsystems
product?
One of mine is no longer working.
Any help much appreciated.
Patrick Elliott, Long-EZ, G-LGEZ
Message 3
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| Subject: | Century 1 Autopilot Musings |
Perfect - thanks!
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Paul
Millner
Sent: 05 June 2012 05:31
Subject: Re: AeroElectric-List: Century 1 Autopilot Musings
Porcine Associates, principal Jim Ham, makes JUST such a device!
Paul
On 6/4/2012 1:14 AM, Peter Mather wrote:
> <peter@mather.com>
>
> The Century 1 autopilot is a competent wing leveller but has very
> basic tracking capability - however, upgrading to a higher spec
> aoutopilot is too expensive to contemplate. Basically all the Century
> 1 sees is the course deviation output from a GPS or Nav set. It has no
> knowledge of course, track etc. This is easily demonstrated by
> engaging tracking when well off course with, for example, the
> deviation at full scale left. The autopilot correctly turns towards
> the course but if the deviation stays full scale the aircraft then
> circles endlessly.
>
> It seems to me that a simple microprocessor program could read in the
> NMEA output of a GPS and artificially create a course deviation
> output. So for example if you are well left of track it could create a
> full left deviation until the aircraft has turned onto a 30degree
> intersection course at which point it could send a centered signal.
> Then when approaching the desired track it could send a right
> deviation to turn the aircraft onto the track.
>
> Has anyone tried playing with such an idea or can anyone point me at
> any algorithms that might provide a starting point?
>
> Thanks
>
> Peter
>
>
--
Please note my new email address!
millner@me.com
Message 4
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| Subject: | Re: OS Wig-Wag Project |
Bob,
Had a chance to power-up the proof of concept board you sent and
it seems to be working fine with my current software version which
I updated to reflect the final hardware I/O configuration for the
board. I will do some more testing tomorrow and then I will send out
some flashed PIC chips to you. I have the wig-wag logic set
to switch every 666 millisec (45 per minute flash rate) which seems
to be a typical rate for certified wig-wag flashers. If you want a
different value let me know. I will post the final software version I
used to flash the chips.
How many chips should I send to you?
Should I send them to the home address that was on the parcel
you sent or to the P.O. box for Aeroelectric?
Greg McHugh
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=374953#374953
Message 5
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| Subject: | Re: OS Wig-Wag Project |
At 01:17 PM 6/7/2012, you wrote:
>
>Bob,
>
>Had a chance to power-up the proof of concept board you sent and
>it seems to be working fine with my current software version which
>I updated to reflect the final hardware I/O configuration for the
>board. I will do some more testing tomorrow and then I will send out
>some flashed PIC chips to you. I have the wig-wag logic set
>to switch every 666 millisec (45 per minute flash rate) which seems
>to be a typical rate for certified wig-wag flashers. If you want a
>different value let me know. I will post the final software version I
>used to flash the chips.
>
>How many chips should I send to you?
>
>Should I send them to the home address that was on the parcel
>you sent or to the P.O. box for Aeroelectric?
One chip will suffice. The P.O. box is the place to
go. I forget, were you planning to use this device
on your airplane . . . or just willing to thrash bytes
for grins?
We might talk about modifying the code (and the boards)
to use the extra two inputs as flash-rate selection pins.
I think I'd move the command lines over to the filtered
pins now 'rigged for analog' and use the two unfiltered
pins for flash rate selection.
Bob . . .
Message 6
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| Subject: | Re: OS Wig-Wag Project |
Bob,
I am planning to use it in the Xenos motor glider I am building but
I am probably a year away from the point where I will need it. I
think I will stick with the single flash rate on my installation but
variable rate seems to be a popular option on many of the
certified wig-wag systems.
If you want the initial software to support the variable flash rate
on the wig-wag I can handle that. Let me know how you want
to configure the changes to the inputs. Is the board you sent
me already set up to handle this with the way it is configured?
I can add the two other input lines to the test harness you
sent.
I would think that three rate settings would be enough, maybe
45 flashes per minute for the default rate, and then 90 and 120
flashes for higher rates. That would be the flash rate for
each of the lamps, alternating lamps to get the wig-wag. I
would think that 3 rate settings would be enough using the
same type of switch you have on the other set of inputs.
I can test a software version with the variable rate before I
send it to you if the board can handle it.
I think I mentioned before that the only other option I thought
of would be for aircraft that have both taxi and landing lights
and that want to have the option to run with just the taxi lights
on the ground but still use the taxi lights in the wig-wag mode
in the air. You could configure the two control inputs to handle
4 modes using the current switch for Off-Taxi Only-Both On and a
second switch for Wig-Wag (ground both the inputs). Not something
I need for my needs but I can imagine someone wanting this
option. Just a software change needed and adding the second
switch.
Greg McHugh
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=374969#374969
Message 7
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| Subject: | Re: battery kits |
Yes -
I got two kits, intact and as advertized. Shipping took two days from NY to
CA. Never met Ron nor done business with him before - I would buy stuff
from him anytime.
Bill
SF bay area
On Wed, Jun 6, 2012 at 7:30 PM, <CardinalNSB@aol.com> wrote:
> **
> Are people getting the takeout battery kits? Satisfied?
>
> *
>
> *
>
>
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