Musical scanner in musical floppy controller?

[sammy1am]

Musical scanner in musical floppy controller?

[Lothean]

Hello!
Yes! I recommend controlling your scanner stepper with a DRV8825 and use the standard Moppy instrument interface.
If you search "DRV8825 wiring" on Google, you'll find some documentation.
If you have a high resistance stepper, you can also use the L298N.

[pefech]

Do I need the RESET and SLEEP pin of the DRV8825 with Moppy or have I only to connect it like a floppy with the STEP and DIR pin?

[Lothean]

STEP and DIR are the only signals you need to interface with Moppy
Just pull RESET and SLEEP high and it works :)

[Kisko93005]

Hello! I've got L298N module, just how to connect it to arduino if I need a dir and step pin.

[Lothean]

You need to use the L298N instrument instead of the default FloppyDrives one.
The pinout is in L298N.h

[Kisko93005]

Ok, I connect l298N to the arduino but the motor in scanner is overheating! Please help! The motor is: mitsumi M35SP-11NK LF

[Lothean]

That's because at 12V, your 15 Ohms motor is drawing 800mA although it is rated 360mA at peak.
You cannot lower the input voltage since :

• your motor is rated for 24V, and 12V was already low
• the L298N would not like it, because of the voltage drop

So you need to use a DRV8825 current limited driver; which uses the standard Floppy instrument and interface.

[Kisko93005]

Ok I bought DRV8825 on monday ,but the musical scanner works exellently with 7 floppy drives.

[Sammy1Am]

Closing for lack of activity.