Hey Paul,

I have decided to continue with the arduino running the ignition and
fuel injection, with my boards and the secondary system,
having the arduino send the engine's data from sensors to the colormax
on a two wire, and then the colormax will display
the engine data on some type of graphical data gauges.

The arduino gives me more versatility for running the engine, the
colormax does not seem to handle it in a efficient manner.
However the arduino will not display the data in a efficient matter, it
lags pretty bad generating graphics, however the

colormax does a fine job with 6 round analog style gauges graphically
and pretty fast and smooth.

I wish something like the colormax was around to run C# or maybe python,
but can not find such a single board pc.

David

Me too. I am hoping Mikroe will adopt a DOS. One can program their boards
in C, Basic and Pascal. All compilers.  Their hardware is second to
none. One can get a very
powerful and fast ARM processor version. They have a color touch screen.
Comes
with the board. Up to 384Kb of flash and 48K RAM.

If they put a MM style DOS on it program size would be limited only by
the 64Gig
micro SD card.

Here is an ARM board I have. Mouser carries some of them.
They also ship at low cost from  Zagreb Croatia.

http://www.mikroe.com/stm32/

http://www.mikroe.com/easymx-pro/stm32/

http://www.mikroe.com/click/nano-gps/

If everybody on here sent them an email telling them you want a Maximite
style DOS on board we might get it quicker. That would give a lot more
choices in VGA displays.

I visited them when I was at embedded world in 2014 and 2015. in Nurnberg.

Paul Lamar


All,

Very interesting!

I just signed up for this newsletter the other day and it is completely different than what I expected, but in a good way.

I'm a low time private pilot looking to get back into the air after a multi-decade grounding for other priorities (sometimes referred to as "life"). Lately I seem to evaluate home built aircraft options on how well they might be suited to hanging a rotary on. I have a technical background with engineering in aerospace wind tunnel testing, mil-aero electrical connectors (design and test), robotics (womb to tomb) and now flexible shaft design/test. Prior to all that I was an '87 BS Aerospace Engineering grad from Syracuse University. So I get the overall gist of you emails. Jack of many trades and master of none which leaves me knowing just enough to be dangerous.

I think I see the various "pieces of your puzzle" laid out, but being new here I don't understand what the overall goal/big picture of your efforts described below truly is.

If it is what I think (a home grown EFIS, FADEC, or similar) then what data sampling rates and visual information update rates are you looking for?

Also, are boards like what you sent links on suited for aero applications? The environmental and vibratory conditions will be very adverse to boards not designed/tested to the conditions found in aerospace applications.

Does National Instruments have anything useful? I use that for a lot of our test stand data acquisition and control. Some of their hardware (not what I use) can function faster than what I think would be needed for such in plane applications. The difficulty would be the packaging might not lend itself to an aircraft. But they might be rugged enough for the aero conditions? They have CAN stuff as well.

Why not use CAN? That is automotive and perhaps close enough to meet your needs? Forgive me if that is a poor suggestion as the only reason I suggest it is because it is automotive. Like I said I may know enough to be dangerous, but I'm willing to learn.

Thanks for your patience.

Regards,
Brad Chubb

Only a few of us are actually interested in building our own EFI or EFIS.
I am a big fan of open software and hardware. A lot  of my time in the past 16 years
was spent trying to help people on a proprietary EFI with out much effect. Open software
and hard ware would be a big help in that regard. People spent a year or more trying
to tune it.

The rotary is very smooth. One Long EZ I know about with about 700 hours
has the rotary bolted in solid. Our time to climb record attempt Harmon Rocket
has the 650HP  turbo 2 rotor bolted in solid.

CAN is a good idea but a bit over kill.

Paul Lamar

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