Really tiny stepper motors

A project log for SEELablet : Instrument Cluster For Laboratories

Minimal, yet powerful combination of control and measurement tools integrated with an SBC running Python based UIs for science & Engg. Expts

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.


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.

  Are you sure? yes | no

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 )

  Are you sure? yes | no