catmjs
catmjs is a node-webkit, front end Cash to Crypto Currency processor, it requires, an Arduino on /dev/ttyACM0, a Bill Acceptor, Computer, and a screen.
It is truly an open source Crypto Currency ATM, you can see the server end at https://github.com/techknowio/ctm-server
You can find more out about this at https://catm.io