I would like to build a winder to rotate and wind automatic mechanical watches. I am planning to use several, probably 4, soho gear motors, model GBS35D-32090-15YC-HS-SP1. I would like to run the 4 motors together on 1 dc converter and to run at about 5-10 rpms for about 30 minutes several times per day using a simple timer. I also need the motors to reverse direction when they start up after being powered off. Can anyone help me with a very simple way to do this? I have seen devices that do this, but have not been able to get an answer as to how. I am simply a gadgeteer, and cannot read electrical diagrams. Thanks in advance for any help!