Blog post: http://blog.tkjelectronics.dk/2015/02/iot-arduino-vending-machine

Main Github: https://github.com/Lauszus/ArduinoVendingMachine

Python code: https://github.com/Jervelund/VendingMachinePython

Electric Imp code: https://github.com/Jervelund/VendingMachineImp