On Wed, Sep 2, 2015 at 11:50 PM, Mike Schoenborn <
rt...@columbus.rr.com> wrote:
> Has anyone printed any of the peristaltic pump designs out there?
> Some look clever, some look pretty, some look actually functional.
Someone in the group printed one and gave it to me. It split along a
layer, but it looks quite glueable. I have not tried running it off
of a drill yet.
> I'm looking for the latter, one that would fit a junk box stepper, for
> delivery of "3 to 8 drops" of a liquid coffee sweetener. Just a Rube
> Goldberg pastime project.
That sounds like a good use of one. I think given the speeds and
torques involved, a popular way to spin these is an electric
screwdriver with a 1/4" hex bit that mates into the pump. The amounts
dispensed wouldn't be as precise as with a stepper, but a simple
magnetic or optical rotation sensor could help that.
-ethan