@Robin2: using limit switches is not an very good solution because:
- hard to have adjustable switches inside an actuator. Maybe little easy on other variants
- hard to implement in software. If i give command for open, when i know that motor are stopped? Need to monitor current that pass through each motor. Is complicated.
@Paul_KD7HB schematic is very simple. I need to make an schematic in these days to make an pcb Maybe i will use fritzing. But in something very basic at this stage. Each motor is controlled by an bridge with two relays.
For now, a picture is worth a thousand words! 
