This is just a simple case to hold a mini ESP32 and his 3 wires to the WS2812B. You can find specifics about firmware in the Github project.

Instructions on building one:
https://github.com/martinberlin/Remora ESP32 Firmware

Communications protocol

UDP will be hearing in a configurable port so you can send short instructions from Orca or any other program you desire

Requirements

Get an ESP32 Board (Any) and compile this firmware using Plataformio or Arduino
Make sure to update the settings for your LED Stripe (data PIN, Length) and also edit lib/Config/config.h adding your WiFi credentials
Update the default Orca IP for UDP so it knows where to send the UDP Messages. Now Remora supports mDns so if you are on Linux or Mac try to make a ping to:
led.local

And see if the ESP32 responds. For windows you need to install Bonjour for this to work. Update the default led.local in Config.h if you need another name.

Instructions on building one:
https://hackaday.io/project/166146-remora ESP32 Firmware