None of the attachments are working on this end. Anxious to see what you got but no rush. This weekend I'm going to be freezing my stones off finishing my deck rebuild that should have been done in May.
What I think you might be misunderstanding or in denial about is the notion that multiplexing the EST circuit will work. The reason coil per cylinder setups work well at high RPMs is because they aren't limited to 90 degrees of crank / 45 degrees of distributor rotation to charge. The EST circuit on the other hand has to live within this constraint. What I was trying to illustrate with this post is that if we're multiplexing the EST line, the very best dwell we could possibly get at 6000 RPM, assuming a very tame 30 degrees spark advance is 1.67 ms. That's the opposite of "good".
edit: I got sidetracked by dogs needing to go outside, but meant to also add that I've been thinking this over non-stop and think there may be hope for the arduino platform. If the original LTCC module multiplexes / gates the EST line (I'd bet you a bottle of good whiskey it doesn't) then what I'm hoping to be able to come up with should be better in the same way sliced bread was an improvement on flour dough baked on a hot stone.
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