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Author Topic: help on Floppy\CDROM bipolar Stepper  (Read 738 times)
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Hello everyone,

I'm newbie in arduino world, but I have some basics in electronics.
I'm trying to put a floppy stepper working, but I'm not sure if it works without a floppy chassis.. motor seems broken when I try to moved manually.

Does anyone already do this?

Basically I'm using an l293ne (without diodes, I think they aren't necessary with this small motor) (I can't find l293d anywhere)

with the flow schematic: (pinout of sn754410ne its the same)



- The motor seems to do something, it make noise, how can I identify motor coils? I match the IC outputs 1-4 with motor pinout 1-4.
- for motor power supply I'm using 5v of arduino, I supposed it's OK, no?

Thanks in advance




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(without diodes, I think they aren't necessary with this small motor)
Wrong you need them.

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how can I identify motor coils?
Use a meter to identify which wires are on each coil.

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I match the IC outputs 1-4 with motor pinout 1-4
No do not use pin 1, that is involved with the serial communications.

Try slowing down the speed, and swapping one coil winding. What software are you running?
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