Over 130 Arduino Nano, 130 RFID readers, 750W RGB LEDs.
This is a Huge interactive crossword which one I made for National Museum in Warsaw. Each letter has RFID tag.
Under the table are custom-made circuits with Arduino Nano, RFID Reader and WS2812B. There is 130 of those circuits and they are connected by I2C interface together to Arduino Mega 2560 which is main brain.
So basically table recognizes letters and take proper actions:
-when there is no letter, LEDs are dimmed white
-when letter is good: LEDs are green
-when letter is bad: LEDs are red
-when whole word is completed LED plays colorful animation.
Main controller (Arduino Mega 2560) communicates with the PC by RS-232. This PC plays special graphic visualization on the wall. On the wall, each word has graphic visualization. When the whole crossword is completed the whole table doing disco 🙂 +sound effects.
The “Anything Goes” Museum. Exhibition curated by children