Maybe it’s too late to present an Halloween project with a lot of function, so we decide to develope a simple application to show how controll a mandible of a skull.
In this project the skull speaks and moves the mandible according to the sound level.
An Arduino analyzes the level sound of a audio source and drives a servo motor connected to the mandible.
All very simple.
The schemtics shows how we connect the servo to Arduino.
Inside the skull we use an old PCB to fix the servo (you can use what you want).
This project wants to be a start point for yours ideas.