I have noticed several hobby/educational type robot arms use 2 servos back to back so that the horns are on the outside and therefore used as a pivot point. I assume this is to more or less double the lifting power, etc. My question is are there simple splitter cable/device that one can simply plug into a pair of these that will "flip" the signal going to one of the servos so that they both rotate in the same direction when mounted back to back like this? I know that I could send commands to each one separately, but it seems like it might generate some timing latency between the two that would eventually wear on the servos.
I'll try to find an example of this and post a link later on ...
Thanks for any help ! JCD