I just wanted to share my project with you that I finished yesterday
My goal was to control LEDs by using MIDI signals that are coming from a source (here my Scarlett interface) near real time. An Atmega328P (on Carnique MK2) decodes the signal and based on the note and its velocity uses an RFM69HW-wireless chip to transmit the data (address, command (either brightness or color change), velocity) in the air.
On the receiving side there is also an Atmega328P with the RFM69HW that receives the signal and based on a matching channel number, flashes a 8x8 array of WS2812b LEDs.
I’m quite happy that there is near to no latency as you can see in the video.
Have a nice day and stay safe!