Electronic Tic-Tac-Toe With RGB LEDs By cedtlab in CircuitsMicrocontrollers25,3341112Introduction: Electronic Tic-Tac-Toe With RGB LEDsBy cedtlabFollowMore by the author: RGB LED game to play Tic-Tac-Toe for two players. Uses 2 AVR Microcontrollers: Mega16 and Mega8. RGB LEDs allow each user to choose his/her color to represent Cross/Nut.