I am new in this forum.
I have a question for help.
I would like to make a display that can show a number of 3 digits.
I is for use in a big room so people can see the number from a distance
The distance between the display and the keyboard is 20 meters.
Perhaps via a serial protocol because i can do it with a simple double wire? (GND + DATA)?
Also i need a keyboard that is connected to an arduino.
I need to type a nummer between 0 en 999.
After return the display must show the number.
Who can help me further?
I know my question is very open, thats because I have the idea but do not exactly know how en where to start! Everything about the software and the hardware is welcome!
Thanks en greetings from the Netherlands!