For the electronic control of the motors, I have realized the following circuit.
The block diagram indicates operation logic.
For more information, goto Italian version
Button start and stop are realized with two switch that close the contact when you it pressed. It is used to control the system motion to start after having power up control axis, or stop without power down control axis.
It is necessary to prevent that the motor keeps on forcing if the system has reached the limit of the movement. It is necessary four switch-limit, two for the rolling and two for the pitching.
The following pictured shows an example of switch-limit for roll movement
Following the functional scheme
I have realized simple and low cost power supply
The circuit have a small dimensions. It uses new FET that doesn't need great squanderers.
Following the complete "Control Two Axis".