Squid Game, which you may have seen on Netflix, is about a fictional contest where players participate in children’s games in order to win a large cash prize, with losers eliminated in a rather unpleasant manner. Having seen it myself, I’d describe it as violent and strange, though certainly interesting and for mature audiences only.
If you’ve seen it, you’ll be familiar with the gigantic robotic girl statue used to referee the red light/green light contest. In the show, the mechanical girl’s head spins to face the players when in a stop condition, while in a go condition she looks away.
If you’d like to play robo-red light green light at home, then the Squiduino- RED LIGHT GREEN LIGHT With Servo device by BuildCircuit presents an interesting (if less consequential) option. As in the show, the device has a countdown timer, and a speaker that outputs verbal instructions, along with penalty sounds when you move at the wrong time.
Motion is sensed via a PIR unit, which can detect when something moves, however it can’t pick out individual players. To indicate stop/go conditions, a picture of the girl statue spins around on a servo, and LEDs glow either green or red. The statue pic also twitches around a bit via the servo’s motion, making the game even more unnerving.
If the game is too intense, programmed sounds can be swapped out to be less ominous, as they’re played from a microSD card. The board uses an Atmega328P-PU processor for control, so it can be programmed using the Arduino IDE (via a FTDI breakout) to function however you want.