[TriEmbed] Need a simple actuator

Scott Hall scottghall1 at gmail.com
Thu Aug 14 21:34:41 CDT 2014


On 08/14/2014 04:20 PM, Bothari wrote:
> I'm interested in learning more about hardware.  We use servos to move things
> in a circle, but what about linearly?  I'd like to make a hopper that bounces
> instead of rolls.  Googling shows electronic door locks are about what I'm
> thinking of, at 10 times the price.
>
> Is there something else that is inexpensive, but electronically activated for
> a hopping motion?
>

I would use a standard motor with a shaft that has a cam or two on it.  As the
shaft turns, the cams move the hopper up and down.  I built something like this
as a kid with my Erector set to create a vibrating powered sifter (a hopper with
a screen bottom -- yes absconded from the kitchen).  Looking back on it now I
would have done better to include a more circular motion as well like how you
handle a sifter by hand.  But in your case, the vibrating up-and-down motion
sounds like what you want.

-- 
Scott G. Hall
Raleigh, NC, USA
ScottGHall1 at GMail.Com

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