Can't add more floppy drives?

[pugnaciousbear]

I have 2 drives connected.
My config is
drive 18 17 drive 19 19
This works fine. I then add in the other floppy
drive 20 17 drive 26 19 and this doesn't work. It is plugged in to BCM 20 and 26, and pins 17 and 19 on the floppy. The other drive too is 17 and 19.

[Kingdread]

I'm not sure if I understand correctly how your wiring looks like, but please note that it's a single drive entry per drive. You only need to specify the pins that carry the voltage, not the ground pins. You can wire the ground pins to whatever ground pin on the Pi and you don't need to tell floppymusic about it. You can even reuse the same ground for many drives.
As such, your config should probably look like

drive 18 19
drive 20 26

because you only need to specify the output pins, not the ground pins.

[pugnaciousbear]

I will try this. Thank you.

[pugnaciousbear]

All I can hear is just -click click click- from the drive :p

[Kingdread]

Hm, so the other drive works fine, even if you connect the second one? You could try adding a dropfactor (-d on the command line). If the frequency is too high, some drives may have issues playing. Or are you by any chance compiling with -DFASTIO (not the default)? If yes, remove that and try again.

Other than that, you could try some other floppy music program (like this one), just to verify that the drive works and the issue is related to floppymusic/your configuration. (note that the pin numberings might differ in this script compared to floppymusic)

You can also try different pins or swap the two drives and see if it's the connection or the drive.

[pugnaciousbear]

I tried that - yeah it seems to be my config.
drive 18 19 drive 19 19
this works with the single drive
It is on multiple lines, i just cant format it...

[Kingdread]

The drive 19 19 part is most likely wrong - you can't use a single pin twice, and you can't reuse a pin for different drives (unless it's a ground pin which should not be listed in the config). Please make sure to only list the relevant pins (i.e. not the ground pins) in your config, and make sure to not reuse a pin for multiple drives (unless it's a ground pin). A correct config should consist of unique numbers (unfortunately, floppymusic does not check this)

[T3CCH]

Thanks for your hardwork on this. Is it possible to use an i2c gpio explander with this?

[Kingdread]

From some quick googling it seems that the expander has to be controlled differently, so unfortunately it's not possible to use the GPIO pins of the expander. However, I do not own such a device myself and cannot test it at the moment.