Hi, today I looked into this because I want to use the flip-option without using a channel. When I understand Scorpions manual right, either connecting or disconnecting the signal-wire (orange) with the ground wire (brown), will switch the flip-channel.
So I was thinking of using a mechanical make/break switch with a lever to actuate the button. Hang it upside down (lever with extra weight); no connection = no flip. When the robot is upside down, the lever falls, presses the button; connection = flip.
Easy and cheap.

I am interrested in better options.