Hi,
some small progress today again. The reason why foot splashes have had a lower volume is simply that zone 3 does not trigger as much as with the original cymbal. With the original hihat i have almost always zone 9 and 3 triggered when stepping on the pedal. With the CY-5 the zone 3 triggers have been much lower or haven't even been there. But all these things can be adjusted by playing with gain and volume parameters in the module and the poti on the board.
In addition the force of the magnet and the distance between magnet and sensor have also an impact on the "playing feeling". A lot of parameters to adjust but hey, its a DIY project

Besides the CY-5 i also tried two other cymbals today. The first was a regular 14" 2Box cymbal (actually my ride cymbal). It works also but is too heavy for the hihat stand. The second one was a cheap single zone Millenium MPS-200. That works also but with only one zone of course (no differentiation between bow and edge). Regarding the "playing feeling" both are not acceptable as a hihat but i just wanted to see if it works with other cymbals.
Next step is to update the OS and see what the new hihat parameters on page HPED can be used for. The description sounds interesting.
Regards, Manfred