A quick call for assistance regarding connecting a Zener diode to condition power on the Pixhawk servo rail.
Our Vulture 2 spaceplane's Pixhawk (seen above in testing bodge installation mode) takes juice from the power module as per usual, and we've got the second output from the module hooked up to RC8, with the servos connected to the rail (in the photo, only the two canard servos are connected). The reason for this hook-up is that we're powering the entire system from four Energizer Ultimate Lithiums, and that works fine - to a point.
The servos are very jittery, and Andrew Tridgell said we might need a Zener diode, which appears to be the case. Our expert in these things is on holiday (or in hiding), so it's left to me to resolve the matter. However, having read this (http://copter.ardupilot.com/wiki/common-pixhawk-wiring-and-quick-start/#Connect_RC_inputs), I am none the wiser as to how exactly to hook the diode up. I've got a couple of the recommended 1N5339 diodes on order, so if anyone has already tackled this, some guidance would be appreciated.