Tiny 3D Printed Siren STL Files

These are the pieces for my tiny 3d printed siren. It comes with 3 parts, the part where the motor mounts, the stator part with the holes and the spinning chopper part.

Bluetooth Controlled Siren Code

If you want to make a bluetooth controlled siren, make sure you have the BluetoothSerial.h library and make sure you are using the Arduino Bluetooth Control app. I am using the pin 27 on the ESP32 to control the base pin on an NPN transistor to PWM control the GND pin. One wire is connected to one of the pins …