So I stayed up way too late last night, but I now have a working beta version of a new FPP Channel Output for the ColorLight 5a-75 receiver board. This board drives LED panels such as the P10 modules people are using with the Octoscroller and Pi Matrix hats. The 5a-75 can drive up to a 256x256 pixel array, which means it should be able to drive twice as many 32x16 P10 panels as a BBB/Octoscroller combination. The 5a-75 can be driven via a sender card attached to the HDMI/DVI output of a computer or it can be directly driven via standard ethernet. The new FPP Channel Ouput utilizes the ethernet method.
Here's a quick video of it in action:https://vimeo.com/198405952
There are some limitations, some we can work around and some we are stuck with.
These boards are designed to have each output connector driving a single row of LED panels, so they don't support wrapping as far as I can tell. I should be able to add that functionality in software as I have done for the Octoscroller and Pi Matrix hats. I actually drive 3 separate matrices off a single BBB currently with one matrix having both horizontal and vertical oriented panels, so I will definitely need to enhance the 5a-75 Channel Output if I want to use it in my display.
The network protocol uses one network packet per row of display per frame, so for displays less than 200 or so pixels wide, they are less efficient than E1.31. This shouldn't be an issue because a Pi 2 B or 3 B can send 256 network packets in around 15ms.
This board requires a Gigabit Ethernet connection, it will not work over 100Mbit ethernet. This means that you can't plug a 5a-75 directly into a Pi and have it work, you need a Gigabit switch in the middle. Once we have official support for some other hardware platforms like the Odroid and Pine64 that have Gigabit Ethernet NIC's, you could potentially plug one of those directly into a 5a-75, possibly only needing an Ethernet crossover cable.
The network protocol used by the boards is not TCP or UDP or even IP, it is a raw ethernet packet and acts like a broadcast. Because of this, you don't want to run this on your home network, because these packets go everywhere, through every port of every switch.