I want to build a little motor combination that will allow me to slowly move an item on a pedestal, quarter of a turn one way then after returning to starting point go a quarter turn the opposite direction. I have seen a few ideas on other sites but no instructions how to make them.

I guessing I need acouple of cogs and lever combinations to make it move back and fortyh.

Can someone help.

Thanks Mark

Do you have a picture of what you're trying to do? I can think of several ways to do it. Also, are you wanting it to stop at 1/4 turn?

It looks like you're new to eurobricks. So, I'll tell you about posting pics on EB. You post them elsewhere and put the link here. Then, they will appear.

Easiest way to say is I want it to work like a fan would, So the total movement would be around half a revolution, backwards then forwards, but at a slow speed.