Light-emitting diodes (LEDs) with high response frequency and high power can be applied in visible light communication (VLC). This letter studies the response frequency and optical output power of the ...

To get started, you will need both an Arduino (any kind should work), and a MAX7219 LED Matrix. Both parts can be bought from many places, including Amazon, Ebay, Aliexpress, Adafruit, etc. For more ...

Arduino Simple LED Matrix 8x32 Alarm Clock. Contribute to vikonix/O-Clock development by creating an account on GitHub.