Zoetrope using an AVR tiny, and MP3 player module and a stepper motor.
The video shows it running in a relatively dark room and then slowing down. I missed the wind up part as I was too slow with the camera. I designed it so the turntables runs the opposite way to the strobed action just the mess with peoples heads. Using a stepper moter meant I didn’t need magnets or sensors and I could fine tune the strobe.