Need stepper motor that goes 6 deg/step for clock project...

[Holychachi]

Im looking to build a clock with an arduino and stepper motors. Only problem is I can only find motors that turn at 1.8 or 7.5 or 3.6 deg per step.
So anyone know of a motor that can go 6 deg per step or 60 steps per rev or 'X' deg per step that can add up to 6?
I know the first thought is going to be to grab an old clock and rip out the innards, 60 steps per revolution there, but I want to start fresh on this.
Thanks in advance.

 

[TBennettcc]

You might check this website out:

http://www.gweeds.net/roboclock/roboclock.html

You might also look here:

http://books.google.com/books?id=4-...gU#v=onepage&q=6 degree stepper motor&f=false

 

[duke37]

Or use the 1.8 deg/step and 200 pulses per revolution?

 

[TBennettcc]

I thought about that, duke. But while that will give a total of 360 degrees, it won't do so at 6 degree intervals...

 

[trueblue]

This website: http://anaheimautomation.com/products/stepper/stepper-motors.php?tID=78&pt=t&cID=19 has fairly cheap permanent magnet stepper motors that may be helpful in your design. And by implementing a gear reducer to your design as suggested in the link posted above, you can achieve the 6 degree per step you are looking for.

trueblue
http://www.gearreducer.net