Synchropter build need help

@PittRBM wrote:

I'm building a sort of dual rotor helicopter similar to tandem called synchropter/Intermeshing rotors.
Find some pictures and details here
http://www.helifreak.com/showthread.php?t=767076

fhedberg recommended his code for dual rotor helis at https://github.com/ArduPilot/ardupilot/pull/1860
few months ago and I haven't heard from him since.

I have desired servo mixing now but having problem with servo trim and range.
Heli setup page is greyed out so I am using full parameters page.
H_SVn_TRIM and Min Max don't work and I'm not very good at coding to fix it.

Also, many people are saying I need separate servo rail for my Pixhawk 2 while a site stated 10A, 10V max. If I'm using power module, do I still need separate servo rail?

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