Let's make a wireless 3D drawing stylus!

This project was a collaboration with Madeline Gannon.

This stylus can be used to trigger object tracking on our motion capture system. Using a capacitive sensing circuit, we can send a message via Virtual Serial to Processing (or any other software that has access to serial) to begin recording the Stylus' position when the tip comes in contact with the skin.

Additionally, we can use a button to tell the system to trigger the recording without needing to touch the skin.

To track the stylus, you need a motion capture system. In our case it's an Optitrack.

Download the Arduino and Processing code, we'll use this later.

I've also included a copy of our BT Stylus_v2.stl if you want to 3D print it.