This project started as a fun experiment combining RC parts, 3D printing, and a little electronics to create one extremely loud Portable Motor-Driven Siren.
I’ve been meaning to refine this build for a while, but life always seemed to get in the way. However, after the 11-second short I posted on YouTube (check it out here) unexpectedly racked up nearly 700k views, I realized it was time to publish a proper guide for all those who want to make one themselves.
And here it is on Instructables: Portable Motor Driven Siren