The ACM Vending Interface was written as a Yahoo! HackU project in 2010 under the name "Machine-Controlled, Generic, Expandable Interface for Vending and Amusement Appliances" (McGeivaa). After losing the HackU competition, but winning an unrelated prize (the added-at-the-last-minute "White Hat" award), the API was renamed to something more appropriate and pronounceable and some things were cleaned up to make it more accessible.
ACM Vending was written by:
- Kevin Lange firstname.lastname@example.org
- Sean Nicolay email@example.com
- Dylan Nugent firstname.lastname@example.org
- Robby Schiele email@example.com
ACM Vending requires PML, a GPLv2 Python HTML templating engine. We have not provided this in the public release of ACM Vending as ACM Vending is released under the NCSA License as a University of Illinois RSO project. Sorry.
You can get PML here.
As ACM Vending is an API, you will need to make an application out of it. A very simple default setup looks like this:
from vending import Db, Gui, Serial, Web, Vending class Caffeine(Vending.Vending): def start(self): Vending.Environment.tool = self self.serial = Serial.Serial() self.db = Db.MySQLBackend() self.web = Web.Server() self.gui = Gui.GraphicalInterface() Vending.Vending.start(self) Caffeine().start()
You can redefine or extend the included modules as much as you want. Additionally, you will also need a theme set:
www/ main.html gui/ cancel.html cantafford.html confirm.html empty.html main.html user.html
Default examples of these are provided from the Caffeine project.
Beyond the application and theme level, you will need to configure your
application with a
machine.conf. A sample machine.conf is provided under
machine.conf lists the operable settings for your
specific vending implementation, like the passwords for your databases and the
commands to send to the machine itself, and the responses to expect.
Note that we can't cover all possible configurations here. ACM Vending was
designed to work well with Caffeine, and uses its basic structure. If your
machine is significantly different in what it expects on its serial line,
you will need to edit
Serial.py and possible
Vending.py. If your database is
sufficiently different, you will most definitely need to modify
The format for the config file is:
value is in Python syntax. Note that this value is
always make sure that your configuration is "safe".
The ACM Vending API seeks to provide a concise, but expandable, library for communicating with vending machines. The layout of the default library modules looks like this:
vending/ Db.py Database library (only MySQLBackend as of now) Gui.py GUI library (only Qt with a web frontend) Serial.py Serial interface (runs on a separate thread) Vending.py The base class and logging Web.py Web server (for GUI, web frontend, and initial telnet)
You are free to edit these library modules as much as you want, but we recommend that you extend them as your own set of classes instead.