Bartender

I've looked at several automatic bartender projects and I would like to do my own.

The big question is how to move and mesure liquid. I believe the correct solution is to put the glass on a scale that is hooked up to and arduino. Pumps are about $3 on eBay, some cheaper. With a large shift register, I could load a whole bunch of drinks. Or I could get a few LCD panels ($2 each) and put two buttons next to each, user page through to find their drink.