This is simple LED BANNER constructed of Arduino Digispark and daisy-chained set of MAX7219 LED 8x8 matrix. Displays up to 500 characters long text message that is stored in non-volatile EEPROM memory of the chip and uploaded via USB from the PC ( Putty terminal ) - natively from USB or via FTDI232 USB-to-Serial converter
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Updated
Sep 4, 2021 - C++