22 Sep
2014
22 Sep
'14
12:55 p.m.
On Sun, Sep 21, 2014 at 5:45 AM, Christian Corti
<cc at informatik.uni-stuttgart.de> wrote:
On Sat, 20 Sep 2014, Ali wrote:
That's about $10-$12 these days (Pololu steppers) for a plug-in
solution thanks to the proliferation of hobbyist 3D Printers. You
still have to wire it up, of course.
The only real question is how much "Oomf" the 51TD stepper needs and
if you can power the stepper controller from a 12V source or if you
have to go up to 24V. That will affect which stepper chip you can
use.
Do you still have the pin out for the IBM 51TD drive?
Forget it, that won't work:
1. You would need additional circuitry to control the drive. As an example,
the IBM disk drive needs the four stepper motor phases for head movement
whereas the Shugart interface only provides a step pulse and direction
signal. 2. To read IBM floppies with a PC you ultimatively
need a controller that
supports FM and MFM. Along with that you need either a tool that understand
the IBM disk structure or something like ImageDisk if you only want to image
the floppies.
The old Adaptec SCSI+floppy controllers are great for this and not too
difficult to find (if you have an ISA machine to toss them into).
-ethan