I was trying to understand the difference between a unipolar motor vs a bipolar motor. So it seems that (if i undestood correctly) a unipolar motor
will be less precise than a bipolar motor? So with that info, it´s probably better to try and build an arduino cotroller to drive the laser and use Katie?
I´m not too good in electronics. I used a hacked servo (hacked the pot and tricked the servo to rotate continously) and used a servo tester to control
the speed and finally, I simply reversed the current to change the drive direction by using a switch . It was quite okay for a while but I could´nt do
planeless scans with it.
Anyway, I´m planning to drive a green laser (http://www.apinex.com/ret2/LC532-5-3F.html
) as now I´m thinking that a good laser driver and a good
laser should be more suitable for micro scans (currently I´m using scan scales @ 42mm & 23mm) because of a good depth of field a laser brings along with it.
SL scanning is very very good
but in this scale range it´s just not working (it´s possible, but not always ideal) because of the shallow depth of field of a projector. So unless
there´s a way of replacing the projectors lens with one that has an iris/diaphgram to increase the depth of field, I think planeless laser scanning is the way to
go at these scales.
I´ve been reading this thread over and over again...I´m still trying to make sense out of it all. Setting up a planeless SL scanning rig is child´s play compared
with a planeless laser rig...so to all those who mastered laser scanning - chapeau chapeau !!! you have my admiration ! viewtopic.php?f=6&t=1999
looks like Mike_A already used the stepperbee and he moved on to the arduino controller...I guess he had good reasons.
Thanks again Walter! I´m sure i´ll have more question sooner or later