siren – Tricky Circuit

🔧 Building a Siren with Two NE555 Timers

Using two NE555 timers—one for generating a low-frequency modulation signal and the other for producing an audible tone—you can create a siren circuit with a sweeping frequency effect. This project is an excellent way to explore the versatility of the NE555 and the principles of frequency modulation.

🔧 How to Build a Siren with NE555

By configuring the NE555 in astable mode and adding a variable resistor or modulation circuit, you can create a dynamic siren sound. This project is a great example of how versatile the NE555 timer is and is perfect for learning about timing circuits and sound generation.