I have a differential Drive robot with a Sabertooth 2x60 that takes care of the skid steering.
I am trying to set up a boat with an APM Running Rover Firmware With 2 motor/ESC pairs, one spinning CW and the Other CCW to drive the same way.I how do I emulate what the ST is doing with individual motor controls. My goal is to drive this with the Elevator/Aileron stick. Most of the rover information out there has a speed control and a steering servo, which, of course, is no help.
It can't be different than the rover!
Channel 1 & 3 as on the rover and the same setup.
Map the outputs of your transmitter or the pixhawk so it works as you want.
There should be no problem doing this!
I run my rover with one stick. It's very handy.
Are you using a steering servo?
No! Two motors on each side connected in parallel.
Turning means that the motors on one side have different speed or direction than on the other side.
A boat would run quite equally without any rudder. Adding a rudder would add complexity.