Скачать или смотреть Playing a siren sound through a standard car horn using Arduino

More info here: http://www.electricrcaircraftguy.com/...
-In this video I do a quick desktop demo of playing a siren sound through a standard "fixed frequency" car horn. Using an Arduino, a simple, custom transistor-based amplifier circuit, and the Arduino core tone() function in my code, I force the car horn to play a siren sound by sinusoidally varying the driving frequency. I also show the signal to the horn on an oscilloscope, and briefly discuss and hook up a Schottky diode in a "snubber diode" configuration, knock down the inductance-induced voltage spikes due to square wave switching.

Watch it play through a car audio speaker here:    • Arduino nano driving siren sound through 1...  

Here is the final project this project led to: Arduino Siren Horn Project Final demo (Star Wars, Mario, Happy Birthday, Air Force song, etc):    • Arduino Siren Horn Project Final demo (Sta...