As far as peristaltic pumps go - sometimes you get what you pay for, but if
you want something to prototype with or use for short term stuff, here are
a few.
This is the one I know "works" as I've taken the SCAD code and modified it
for my own use (I may even be able to dig it up from somewhere).
Using OpenSCAD it wasn't too bad and I got it working pumping liquids for a
few hours a piece (at reasonable speeds) (The give in the plastic limits
certain speeds based on what material you print it out of).
http://www.thingiverse.com/thing:454702
Heres a few more :
http://www.instructables.com/id/NEMA-17-Peristaltic-Pump/
http://richrap.blogspot.com/2012/08/geared-peristaltic-quick-fit-pump.html
http://www.thingiverse.com/thing:8652
Heres a little more on the first design:
http://tim.cexx.org/?p=1282
Including its use in a bar machine
http://hackaday.com/2015/04/26/senior-design-project-serves-infinite-drinks/
On Mon, Jul 11, 2016 at 9:09 PM, Steven Owens <stevenjowens@xxxxxxxxx>
wrote:
Hey guys,
I'm slowly getting started on my brother's dream of a robot bartender.
I need to source a couple things so I'm looking for advice on
suppliers, search terms, or even specific components if if anybody has
familiarity with:
peristaltic pumps
electronic valves
linux-friendly electronic scales.
Peristaltic pumps are necessary for really accurate pumping, but also,
I've heard, expensive. But if anybody has advice on sourcing these,
I'm all eyes.
Lacking peristaltic pumps, what we want to try is gravity-fed liquor
with electronically controlled valves, and control the quantities by
having the cup sit on an electronic scale. Again, anybody gotten into
this and can point me at the right search terms for such valves?
And finally, an electronic scale that I can plug into a raspberryPI to
control the quantity. I'm kinda assuming I want one that has USB, but
again, any recommendations on where to start?
--
Steven J. Owens
stevenjowens@xxxxxxxxx
puff@xxxxxxxxxxxxx
412-401-8060
