The controller part is pretty simple. The hard part is finding these modules. Most were made by Solari in Italy, Omega in Switzerland, or Salient in Australia. All are either out of the business or won't sell to consumers.
Like the youtube like you posted, the modules are surplus or salvaged ones. I've seen kickstarters for little cardboard replicas, but nothing more durable than that.
I've also found one guy that built his own module and put his designs online:
Like the youtube like you posted, the modules are surplus or salvaged ones. I've seen kickstarters for little cardboard replicas, but nothing more durable than that.
I've also found one guy that built his own module and put his designs online:
http://www.instructables.com/id/Arduino-based-Split-Flap-gam...