That's a cool project!

The author -- Frank Hunleth gave a talk at Erlang Factory last year about it:

http://www.erlang-factory.com/sfbay2014/frank-hunleth (Building an IP Network Camera)

It was fun and he did a demo too.

The idea was that Erlang works very well as an init/supervisor on an embedded system.

Erlang processes map very well to a full OS processes but on a smaller scale -- tiny stack space (a couple K) + but heaps are isolated. There is also a C API which makes it nice to interface with hardware.