Meet Ghosty and Skully robots. They can follow your face and they know when you are smiling to laugh with you!
For this project we used cheap Halloween decorations that can be found in a dollar store and turned them into fully functioning robots.
For step one of making the skull a robot, we cut its head off from the stand with a small hacksaw.
We used a pan/tilt kit with two servos, the Arduino Uno and the HM-10 bluetooth module.
Skully requires the additional SG-90 servo motor.
See the attached schematics.