I ordered from the boscoyo bulk buy this year and one of the items I ordered was a 2400mm x 1200mm matrix. I spent a few days pushing pixels in and then wiring it up and today finally I managed to get the thing working. I did a quick sequence of generic effects just for a test. I am loving the fact that I spent the time and set it up properly and it worked first time! As soon as I turned on the Pi test sequence away it went.