It is pretty easy to do your own EFI with a Maximite. The easiest
hardware control computer in the world to program.
Not a very steep learning curve. I can help with out a lot of time
or trouble and you would be doing all 1000 people on here a big
favour as it would be open source. You could use all six injectors
for smother running.
This is basic'ly all there is to the program. Pardon the pun. A '
before the text is a comment and does not enter into the
functioning. EFI-program.jpg attached.
Paul Lamar
I will definitely have a lot of catching up to do! So the Maximite
will handle both the EFI and ignition coils? The programming is
beyond me, but my brother might also help. I assume I could test the
Maximite on my RX-8?
I will look for a source unless you have one handy.
Scott Gettings.
CircuitGizmo sells them in the states.
http://circuitgizmos.com/
Version 2 is now out with higher performance.
The web site does not do it justice. Some times I think CG doesn’t
understand just exactly what it does. It is like a complete DOS
computer running QB with a solid state 64Gig hard disk.
"The CGMMSTICK and CGCOLORMAX have the Maximite BASIC (MMBasic)
interpreter programmed into the PIC32 microcontroller. "
Not only is the BASIC interpreter programmed into the PIC32
microcontroller the programming editor and a disk operating
system is also built in to the microcontroller.
The Maxm+doc jpg shows a Maximite set up next to another computer
running the PIC BASIC pdf doc for rapid access to any BASIC command
info. This is a major breakthrough in the ease of programming micro
controllers.
For $57 it is an extreme bargain.
BTW
Harbor Freight sells a low cost one cylinder piston engine.
Perfect for getting your feet wet in EFI.
Once you get that to work expanding the number of injectors
is a piece of cake.
Paul Lamar
I forgot to mention something about the Maximite.
When I mention operating system I take for granted what that means.
That could be a mistake.
What the built in OS in the PIC chip does is store hundreds of
different programs on the PC board in the 64 Gig SD card and thousands
of mixture maps that can be accessed in micro seconds.
That makes the Maximite ideal for EFI. One can share mixture maps
down loaded from here and try dozens in one's EFI program.
If a bug is discovered in a new EFI program another EFI program
can be loaded and ran in usecs.
This is totally unique to hardware control micro computers.
This is far far superior to any EFI system. Even Motec let
alone Tracy's.
Amazing !!!!!!!
Paul Lamar
"If a bug is discovered in a new EFI program another EFI program
can be loaded and ran in usecs."
I hope that I am not the only one to see a flaw in this approach. My
airplane has a best glide speed of 90 knots. It also has a vertical
speed of -700 feet per minute in this glide. So, 1.5 miles per minute
forward and 700 feet down. So, if my engine stops at 10,000 feet I have
at most 14 minutes and 21 miles to find a landing spot. If it happens at
2000 feet I have less than 3 minutes. If my engine quits I will not be
ciphering through multiple EFI programs looking for that one that might
fix my predicament, I will be looking for a good place to land, one that
I hopefully can walk away from.
My approach is different from this one- regardless of the language you
use to write the program you need redundancy. My approach at the moment
is 3 ARM boards/processors and dual sensors. Each of 2 boards reads both
sets of sensors and compares the readings. First check. Then these 2
boards calculate the outputs. The third board reads this information and
compares the info and will reject anything that is way off from what is
expected based on averaging totals and tolerances that are kept in
memory. Second check.
The third board outputs to the drivers, while the other boards check
this output and compare it to what they calculated. Third check. If the
third board isn't producing an output within the parameters of each of
the first 2 boards a notification is sent and the pilot can then select
which computer to land with. The notion that in the event of an engine
issue related to the EFI the pilot would be changing programs or
adjusting code is nonsense. All of this should be worked out long before
you leave the ground, and all that would be left to chance would be an
actual failure, not an adjustment. Kevin Alderman
Of course one has to be prepared with a program name that is known
to work.
That should take all of 30 seconds.
Of course one would not do that at low altitude.
Take off with the known good old program test the new one
at 10,000 feet.
Mikro Electronica told me they are implementing the same thing in their
very powerful ARM microcomputers. A sea change in programming and
ease of use. Talk about I/O. They are swimming in I/O :)
Paul Lamar
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