Thanks guys for your replies
ericgibbs:
using it in full step mode with 1 degree per step. Will be using Fujitsu MB90594 microcontroller
eblc1388:
i like ur idea.. what is the chances of it not skipping steps..? Its hard to say right, when the motor moves for few hours going back and forth.. Come to think of it, the only way the motor will skip some steps is when the load is heavy right..? actually, the load that is attached to the motor is a light plastic needle..
Nigel Goodwin:
yeah.. limiting switch is another possibility but it involves tampering with the hardware tho.. hmm...
Anyway.. wondering, is there any way to maybe, measure the back emf and from the back emf, determine the position of the motor..? The motor will not go more than 360 degrees, maybe the maximum is up to 270 degrees. I mean, each position of the motor will experience different amount of back emf rite..?