How to see the traffic on a Vending Machine bus

Nice blog post on how to get and decode traffic on a vending machine to repurpose it.  Beats the alternative of just replacing all the boards and building your own.  I stumbled on this post by accident while digging for more info on Makelangelo.

https://www.marginallyclever.com/blog/2014/04/making-sense-of-vending-machine-multidrop-bus-communications/