Sunday, March 18, 2007


Biollante Linear Actuator

Here I have a piece of HARDWARE at long last, that actually does something!

The motor is an Eastern Air Devices linear actuator, basically a stepper with threads going all the way through instead of a solid shaft. If the matching threaded rod isn't held still it'll just spin and look silly, so a square shaft matches a square hole in a metal plate bolted to the front to prevent this.

See it on Youtube

That motion is about 7,000 half-steps.

Always wanted one of those. :-)

Isn't the stroke a little short, though?
Yes indeed. I'm off to get some longer bolts tomorrow, and some sort of pipe to cut into longer standoffs..
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