Well, it's been a while since I posted anything...sorry about that... I've been busy and working off and on (more off than on unfortunately). So a quick recap of the last 2 months...
I wasn't happy with the way QT looked...and since I've never used it before I also wasn't very happy with the learning curve required just for the software piece. I have enough of a learning curve with the electronic components piece. so I wound up ditching QT for Android. With help from this blog (http://www.2net.co.uk/tutorial/android-4.3-beaglebone-fastboot), I was able to get Android installed on the BBB.
I also build a board that my pumps will plug into. It connects to a proto board on the BBB and allows the 3V from the BBB GPIO pins to turn on the 12V that the pumps require. I'll post pics and draw up a schematic at a later point.
I've gotten enough of the software coded to do some testing.
Between the board and the software, I have enough for a functional prototype. Now I just need to build a chassis. Below is a quick video demonstrating the Android App turning the motors on and off based on the drink selected.