Newton666
Newbie level 1
Hi everybody. I have a stepper motor from an old DVD rom unit, which has 20 steps per turn. The thread bar for linear movement has 3 MM. of advance per turn, which results in 0.15mm of advance per step, 0.01875mm with 1/8 micro stepping by using the A3967 driver. My question is, how is that possible if distance between tracks in a dvd disc is less than 1 micron (<0.001mm)? And how can I get that displacement of 1 micron? Hope any of you could help me. Thank you very much in advance.
Best regards
Best regards