Re: Re: Party automation

[David Yeend <david.yeend@xxxxxxxxx>]

The pump will draw with a positive pressure so you do not have to have the
liquid gravity fed as in typical drink optic arrangement. As Patrick said a
stopper with a hole in would be ok to act as a vent.
With this approach the next consideration which will add cost, for a
consumer / low maintenance option, is detecting when the dispencer is
primed
and ready for production after changing the bottle. Potentially, where the
liquid is delivered to the feed side of the pump by gravity this problem
goes away as there is no need to 'load' the supply (not forgetting the vent
consideration and desire not to decant from the bottle....)
I wonder if you could capacitively detect the presence of the liquid in the
tube with field coils. That would be fun - one set positioned to detect X
shots left and one to indicate the ingredient is primed and ready to go
after the new supply is attached. I am sure you could multiplex the output
of a number of them into a single A2D chanel on an MCU and scan the array.
Sounds like fun.....and probably easily implemented with a Barionet and a
number of relay modules. I guess the smaller pumps would work well with a
relay control in terms of accuracy but would take longer to deliver.
Next question is shaken or stirred and how do you sort out the olives on
sticks.......


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