Air raid siren
thingiverse
A compact yet ear-piercing siren demands a robust motor - specifically, a 775 DC motor capable of achieving speeds of at least 8000 RPM. To assemble this system, you'll need eight 10-24 screws and two additional screws designed for the 775 motor itself. Be prepared to fine-tune the screw holes using a drill to ensure a secure fit. When working with this siren, don't underestimate its decibels - it's crucial to wear hearing protection to safeguard your hearing from potential damage. https://www.youtube.com/watch?v=3IewKPLwYp8
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