Doesn't work with more than 1 floppy drive?

[Inza]

Hello,

I have troubles to make moppy work with more than 1 drive.

I have two floppy drives setup. I use the provided Arduino code and Java App. I test with the provided Tetris midi file.

When I use only one floppy everything works well. But when I check the checkbox to use the second channel as well, everything goes crazy. Both floppies will move like crazy.

I have tested that it is not an issue of HW because when I use only the second floppy it works right again.

Originally I thought that it is an issue of power, but now I am using perfectly working ATX power supply and the problem remains.

And yes I have my floppy drives grounded with Arduino.

Any ideas what I am doing wrong?

Thanks Kind regards Tomas

[Sammy1Am]

Huh, interesting. Any chance you could post a screenshot of your configuration and maybe a picture of your wiring? That'll make it easier to make educated guesses. A couple potential things to try though:

• Switch the first and second drives and try running only drive number 2. Maybe that drive in particular has issues.
• I'd suggest grounding issues but you've got that taken care of-- maybe some sort of cross-talk between the control wires?
• If you're feeling especially adventurous, you could try creating a MIDI file that alternately plays notes on each drive (i.e. only one drive is playing at a time) to see if notes from just one drive are leaking to the other drive. (It's a long shot....)