sorry Ham, battery ran out on laptop, will check out that other option soon but I think for now I'll go for the one I've got.
do I need to rig something up for the station to open the block for returning carts?
lol np
Yeah - you'll need a detector rail a few blocks in front of the door with a bit of wire running into the circuit that's already there - it's easy enough to do - just be a bit wary of the wiring that's already there