I made ion sensor.
100-400V regulated switcher(most part from atx power supply)
and this senzor
And i did same measurement(290 and 330V).
2000rpm spark 22 BTDC
Plan is use AT91SAM7S128 for ppp calculation (and maby knock detection), connect to vems via(can, spi or ?)
Before comlicated solutions:
The scoping becomes much easy to see if VEMS switch some output @ 15...20deg ATDC.
May be we can ask developers?
How difficult would it be to implement such feature in the Firmware? By the little knowlegde I have it seems that we need to modify the coils and have a tool that gives VEMS an input signal.
- for knock control i would be easy to implement(just connect signal to knock chip). But for PPP finding it's impossible to implement only to firmware. It needs one more CPU to process signal.