I'll have some boards in a few days.
The height of the board is 1.25 inches and it
is 3.80 inches long. The board length is
the same width as the ZBasic mother board.
Packaging will be optional. I might
design a billet case and have some body NC mill
it. Or you can do it your self out of sheet
aluminum. There are some tiny fans on the market.

This measures the RPM using a CAS on the flywheel
teeth every .63 seconds to the nearest rev and notifies
the main computer it has valid data. The computer reads
the data and resets the board to start over.
That is done in just a millisecond or less.

Nothing exotic here as it uses only four cheap
CMOS chips. The most expensive part is the coax connector.
Radio Shack used to carry these chips but you will
now need to buy them from Digi-Key. I am thinking
of selling a kit.

Next project is the injector and ignition driver board.
I'll design it for six injectors. Which can be staged
or not staged. That will be done in software.
The ignition part will just amplify the HE sensor out
puts on the board and send them out to MSD or other
type of stand alone ignition systems like the Ford EDIS.

Thats it for a basic running engine. EGT amp
board will then be done for EGT reading and feedback
and auto tune.

The multi-strike rotary engine ignition board will come later.

There is plenty of I/O pins on the Atmel mother board
for other expansion such as simple instrument panel
displays.

Paul Lamar


Not yet on running.

The RPM module is compatible with all engines
that have flywheels with starter teeth.
It will work with any computer that has
two 8 bit I/O ports. That is most single
chip computers and PC's with parallel port
PCI plug in cards. QB64 or C programming languages
will be required for the PC.

http://www.pcconnectionexpress.com/IPA/Shop/Product/Detail.htm?sku=186766&SourceID=k172344

Most single board computers are programmed in asm,
C or BASIC. Some tiny BASIC stamp computers
will work if they have enough I/O pins.

Paul Lamar