56: A Raspberry Pi-Controlled Video Wall

When I first noticed the Pi's HDMI connector I thought of using the system as a way to create a cheaper video wall. (Back in the 80s I worked on a 75-screen wall that cost millions.) Anyway, you can now buy a 40" 1080 TV for $300. Add one Pi for each TV and an extra Pi to control everything plus an ethernet switch. So you could have a 9-screen system of under $4000. And in the spirit of the Pi, someone has has done software and they are giving it away (for now?). See--

http://www.piwall.co.uk/