Saturday, November 9, 2019

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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
So off to TinkerCad to make and test the circuit.



Then I built it on a breadboard and here is the siren in all it's screaming glory.





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