Adafruit_GFX-compatible library for NeoPixel grids
Why do you think that https://github.com/bblanchon/ArduinoJson is a good alternative to Adafruit_NeoMatrix
Adafruit_GFX-compatible library for NeoPixel grids
Why do you think that https://github.com/bblanchon/ArduinoJson is a good alternative to Adafruit_NeoMatrix