Jon Anderson wrote:

On 7/16/2011 8:15 AM, Pete C. wrote:

The various Gecko drives work well, but the OP was looking for a
complete single axis control with GPI/GPO, not a standalone drive that
would need a control added.

Well, I was. But it's looking like what I wanted really doesn't exist
anymore at the price point I want. The Sherline setup will do it, but I
can buy a turn key rig for $25.

It's looking like a laptop, MaxNC Step/dir software, and a simple low
cost stepper driver. Geckos are very nice, but overkill. I don't need
much power or speed.

Jon

However you do it, be sure to include a vibration dissipation delay
before each shutter trip, and suitable delay for the exposure interval
before moving to the next position.