Suppose you have a led-matrix and you want to control it via RS232.
Suppose that the microcontroller between the matrix and the pc is able to receive informations regarding how to light up the leds of the current column.
Imagine that you need a driver that take as input a file containing “well-formatted” text, and write to the serial port the informations for the microcontroller.
Imagine that you need a gui which let you create formatted files to send to the driver above.
Stop imagine, it is real!
Try the gui here.
Follow the public repository under the name: led-matrix.