focus controller

New Focus Control System (Finally) Available

 in Blog  tagged focus control system / focus controller / focus motor / perfectstar / PerfectStar B

I told you about PerfectStar B some time ago – it’s my new focus control system using bipolar motors instead of the traditional unipolar motors.  And I had intended to put it on my website and start accepting orders back in September, but ran into some software issues that delayed the release just enough to push it into the busiest time of year, so I didn’t get around to updating the website until now, even though I have already shipped a couple of these to existing customers. The “B” in the name refers to its use of/support for bipolar stepper […]

PerfectStar Goes Bipolar

 in Blog  tagged bipolar / focus controller / focus motor / motor / perfectstar / PerfectStar B

In this case “bipolar” does not refer to a disorder, but to a type of motor.  The current version of PerfectStar, like most focus controllers, uses “unipolar” stepper motors.  The indirect reason for this is that I (and probably most of my competitors) designed the controller to be compatible with existing motors (and for the motor to be compatible with other controllers) despite some significant advantages of bipolar motors over unipolar.  I’ll provide more details on that later, but first, I want to point out some other changes. In the above photo we see the “front” end of the controller. […]