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Really tiny stepper motors

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JithinJithin 07/18/2016 at 10:592 Comments

Micro stepper motors over at aliexpress are super cheap ( 50 for a few dollars! ) . Plenty of shops sell these, but there's hardly any mention of what they're used for. Maybe to adjust lenses inside digital cameras?
Here's what one looks like :


They're 4-wire, 2-phase steppers, and can be driven in half/full step modes using 4 push-pull digital I/O. From a science perspective, I need to figure out where these might come in handy. Maybe this biologist can use it to manipulate his subjects into selective interaction.



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0xF wrote 07/18/2016 at 14:37 point

I have seen those and your guess is right, they're found inside cameras, and there are larger ones in CD drives to move the reading assembly.

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Jithin wrote 07/18/2016 at 16:07 point

Thanks!  I'm familiar with the CD and Floppy drive motors.
But the tiny ones are exciting. Maybe the guys with the #Refreshable Braille Display might want to take a look. Or the #DIY Scanning tunneling microscope guy , for coarse X-Y movement of the sample (outside of the piezo's range )

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