This uses a $40 Mini MO ARM processor from Mikroe
 and a low cost 100 psi pressure sensor to recordthe pressure
in all three chambers of a Wankel rotary engine while
it is turning over with the starter. This gives a very good
evaluation of any Wankel engine condition. Replaces a device Mazda
charges a lot of money for :)

A modified old spark plug can be used to make a pressure fitting.

I'll do a PC board and a kit of parts for this.

The screen shots say it all.

No more using your thumb on the spark plug hole :)

Paul Lamar

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