Demo video See the Wiki for further informations! This file is at least needed. The ino file is generated throughout QM. LEDviaApp.qm = QM model file These files are originally from here. NeoPixels_SPI.cpp = library from Nick Gammon NeoPixels_SPI.h = library from Nick Gammon The app file: aia = exported source file for import in MIT App Inventor 2 The doc directory includes further files and informations.