On 3/30/10, Marvin Johnston <marvin at west.net> wrote:
I just finished a project using stepper motors and a PIC processor to
drive the whole thing. Aside from defining the parameters (and debugging
my mistakes), it was pretty easy to do. I used a Ramsey Stepper Motor
driver kit to drive a 200 step/rev floppy disk drive motor along with a
16F84A PIC processor to control it, and it worked great.
Nice.
Using a sharpie to just mark the hole location sounds
like it would be
really easy to do. Anyone know the permissible hole tolerances on hard
sector floppies?
Can't help you there.
If using a laser, what power would be required to cut
the holes and what
kind of laser? I currently have a 35W IR laser that could be more than a
bit dangerous without proper safety precautions ... I've kind of gotten
used to eyesight :)!
Wow! 35W? That will cut through 6mm acrylic with the right optics,
I'm pretty sure (50W will cut through 12mm). I don't know what the
threshold is for punching through mylar (vs acrylic), but 35W seems
like more than enough. A solid wood box for a cover would be a good
idea to protect your eyesight.
-etthan