[TriEmbed] Need a simple actuator

[Jeff Highsmith]

Joe,

About how big will the 'bot be?

You might consider converting the rotary motion of a motor into a linear motion using a crankshaft or similar linkage. Like a car's engine in reverse, with the crankshaft spinning but the pistons going up and down. Depending on your desired hopping rate, it might be possible to store the energy of a single rotation in a rubber band or torsion rod, using a cam, notch or catch to release it at the end of each rotation.

Jeff :)


> On Aug 14, 2014, at 16:20, Bothari <bothari at gmail.com> wrote:
> 
> Group,
> 
> 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?
> 
> Thx,
> Joe
> -- 
> "There are only two industries that refer to their customers as ‘users’." - Edward Tufte
> 
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