DIY Mini Drill / I Converted Cheap Microphone into a Touch Controlled Mini Drill

In this video. I'm going to build a Mini Precision drill that can drill small and round objects or anything that needs precision.
It is possible because the switch used in this project is a TOUCH CONTROLLED SWITCH which can be turn on by touch to avoid shaking when pinpointing the drill bit into something small.
And this circuit setup can be used in wide variety of projects.