It can run on steam if you like; it just needs one rotating shaft as input power. I did have the first version hooked up to a model steam engine, shown at the e

It can run on steam if you like; it just needs one rotating shaft as input power. I did have the first version hooked up to a model steam engine, shown at the end of the video here: http://www.srimech.com/turing-machine-and-maker-faire.html http://www.srimech.com/turing-machine-and-maker-faire.html