Two NE555 timers - Police Siren
Inspired by the law enforcement circuit from last week (and with a truckload of 555s available), I looked about for a Police Siren to match the Police Lights. There are seven trillion such circuits out there, but I loved the simplicity and the wonderfully simple instructions found in this video (screenshot below).https://youtu.be/zDMOsEDxPOc |
Then I built it on a breadboard and here is the siren in all it's screaming glory.
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