I'm trying to move to FPP from LightShowPi. I have FPP running on a RasPi 2B+ for right now. However with LightShowPi I was using Arduino to drive the lights. Can I do that with FPP?
If the Arduino is just listening to a serial output then you might be able to get it working using FPP's Generic Serial Channel Output. If the Arduino listens for some other protocol or over the network, there is also a chance but we'll need to know more about what the Arduino is expecting to be able to tell you how you could use it with FPP. If FPP doesn't support what you are using now, you might also need a different sketch on the Arduino.
So currently I have it plugged in directly to the USB port on the RasPi 2 running FPP. But I can plug it back into the RasPi running LightShowPi.
TBH I would just have it listening for serial output. I'm super new to FPP and would like to drive my WS2811 and WS2812b lights for Halloween. I have downloaded and installed xLights and Vixen but have NO idea how to create sketches.
These are Arduino UNO R3 x2 btw.
What software did you install on the Arduino and what protocol does it talk over the serial port?