Catch The Red was placed at the last door of the room. At the moment the player crossed a light barrier, the LEDs went on. At the frame of the door a white light was moving around the door. Beside that, another fixed red light was shining.

At the table were standing to boxes in which were two controllers. One was for the velocity of the white light, the other one for buzzing when the white light crossed the red one. If the player buzzed in the right moment the red light jumped to another place. If not a strange sound appeared, so that the player understood that he was wrong. After five times caching the red light the player won and a chain of light flashed. In the middle of that chain the player discovered the key of the door and could leave the exit game.

Down below you can see the materials we used.

Our base was the Arduino Uno. 

All code we needed was programmed from us.