3D Printed Air Raid Siren Sounds Just Like The Real Thing
1 min read
Summary
Maker Mark Makies has designed a DIY siren using 3D-printed components and off-the-shelf parts, costing around $125.
The device replicates the aural effect of an air raid siren by using a rotor which spins at speed within a 3D-printed stator, creating pressurized air spikes that generate a loud howling sound.
The rotor is spun by a powerful brushless motor, and speed is controlled via a potentiometer to vary the sound pitch.
While the build is relatively simple for makers with 3D-printer and electronics skills, Makies urges caution around how the device is used, noting that it isn’t necessary to test it in your local neighbourhood unless there is an emergency.
