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Ok this is interesting. I timed the pulse arm at 25v to be just over 4 seconds, at 30v it's 5.4 seconds !!! Weird !!!

Hmm, try 20V then... I'haven't timed my pulse arm, but I Timed it just now using my youtube video http://www.youtube.com/watch?v=f3Z31FvUHMo It's about 2 seconds from the time I press F10 to the "click" at the end of the selection. This is consistent with my earlier analysis that the 2.56sec should be more than enough to sample the pulses.

To extend the sample time I would need to rewrite the driver code to add an IOCTRL to expand the sample buffer. I never done IOCTL, but it should be possible. For 50Hz the wallbox app state machine will need to be completely rewritten.

It's probably easier for me to send you a $24 110V@60Hz inverter and a $20 radioshack transformer, assuming you''l cover the cost+shipping.

-Techtom