Today's Message Index:
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1. 05:19 AM - Re: Engine Monitor - Homebuilt Style... (Charlie England)
2. 06:51 PM - Re: Re: Too many Circuit breakers.... (Robert L. Nuckolls, III)
3. 07:04 PM - Re: Engine Monitor - Homebuilt Style... (andymeyer)
4. 07:08 PM - Re: Too many Circuit breakers.... (andymeyer)
Message 1
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| Subject: | Re: Engine Monitor - Homebuilt Style... |
On Wed, May 11, 2022 at 10:11 PM andymeyer <meyerkc135@gmail.com> wrote:
> >
>
> So, this came up in another thread and I was asked to share... Plan is to
> write it up for Sport Aviation, but this group has been such a help over
> the years, and such a knowledge-base for both my fun and my engineering
> career, I'll share here.
>
> As is the expectation of this group, I want to learn how to do this better
> as well. I have thick skin and am open to making this better. My wife
> laughs every time I cringe and delete all of the traces on the PCBA design
> software and start re-laying out the boards. It's part of the sickness.
> This is experimental.
>
> I needed a good, data recording engine monitor for my Long EZ. I wanted a
> better leaning algorithm that I could find on the market, a basic air data
> computer, more I/O, and a simple interface. The first picture shows the new
> screen - 3.5" capacitive touch screen in operation, the 2.8" screen for
> comparison (half the resolution of the 3.5") and the first revision of the
> PCBA's. The next revision is on its way.
>
> The system consists of a module that sits near the engine on my Long EZ
> which runs a Teensy 3.6 microcontroller that is attached to a board I
> designed that collects data from 20 channels filters it and sends it via
> RS232 to the display module. The display module collects another 10
> channels of data (and has spare serial inputs for expansion) and processes
> it on a Teensy 4.1. It stores it every .5 second on a uSD card and displays
> it.
>
> I'm currently flying with the 2.8" version and really like the clear
> presentation of data, though the 3.5" version affords me more data on the
> screen at a time and easier viewing. The 3.5" version will be installed
> with the panel upgrade that I'm getting help with in another thread. Future
> updates to the software will include some AI for predictive performance and
> engine health monitoring...
>
> The PCBA designs are done (and redone, and redone) in upverter - a great
> free circuit design tool.The enclosures are designed in onshape and the
> software is all C, written in the Arduino IDE. If anyone is interested in
> helping this project along, I'm game... Charlie, passing the joint. My wife
> and I got a kick out of the video (after the kids were in bed.)
>
> Andy
That is truly impressive! I wish I had the skillset to help with a project
like that, but I'm limited to making paths for electrons & troubleshooting
path failures. I learned over 50 years ago that I should leave programming
(and singing) to others. If you decide to make the circuit design & the
software open source, it could be very useful to those of us installing
alternative engines. Using water cooling means that there are orders of
magnitude more parameters that need to be monitored and optimized, to get
an efficient installation, so having all those inputs available would be
great.
Glad you like the 'Bogart' reference. :-) It's basically just a 'throw
away' novelty cut from that album, but it's fun. The rest is a masterpiece.
Don't know if you're old enough to have heard it, but after almost 45
years, it would still make my top 20 list (and I have a long list). The
band would probably make my top 10 list.
Charlie
Message 2
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| Subject: | Re: Too many Circuit breakers.... |
At 12:53 PM 5/11/2022, you wrote:
>
>Bob,
>
>It's an O-235 C1C with 8.5:1 pistons and dual Lightspeed Plasma
>III's. Carbureted... No vacuum system or mags. She's flying right
>now (with 1 mag, 1 Plasma III), but our ramp shuts down for 10 weeks
>so I'll be doing this upgrade then.
>
>My diagram is somewhat derived from the Z11 (might be an older
>version since it still had the AEC9001-1 in it - I bought your book
>years ago...
Why no second alternator on the vacuum pump pad?
Bob . . .
Un impeachable logic: George Carlin asked, "If black boxes
survive crashes, why don't they make the whole airplane
out of that stuff?"
Message 3
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| Subject: | Re: Engine Monitor - Homebuilt Style... |
Charlie,
Thanks! It's coming along. I am more than willing to share the design on a limited
basis (my wife and I were talking about this topic last night, but exploring
the right options to protect, but grow and develop the design.
Drop me an email at meyer f 16 via googles email and let's see if we can get something
that meets your needs for the alternative engine. This could be a solution.
I've got plenty of water cooled experience, but not aviation water cooled
experience.
I learned a lot of this along the way - relearned things from years past and got
some help here and there. I also learned to resize my pics before posting on
the AeroElectric list. :)
Andy
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=506748#506748
Message 4
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| Subject: | Re: Too many Circuit breakers.... |
Bob,
The SD-8 concerns me 'cause if I lose the electric system, I lose the engine which
means I won't get enough power out of the SD8 (low RPM) to run the ignitions
to restart.
Got an option that makes sense, or can you talk me into the SD8?
I still wonder about master switch failure - I think I have that covered in my
design above. Engine, monitoring, attitude and GPS.
Andy
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=506749#506749
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