i am using the triangulation technique to find the position of a SGV using laser based technique.i use 2 targets of different strip numbers to distinguish b/w the targets.one target has 2 pulses while the other has 4 pulses.i will be mounting the laser diode and the photo diode over the stepper motor which will rotate for 270 deg.My doubt is if the target starts b/w the 2 steps there is possibility of an error of abt 1.8 deg for a half stepping.since i would want to have an accuracy of upto a .5 deg.
Thanx for the help in advance
harish