Electrical-storm sound generator

This box has two wheels, that you spin, to electromechanically generate scary dramatic sound!

Features:

- The 2 wheels each generate a different type of sound.

- The wheels can be spun by hand or by blowing air on them.

- Low-pass filter makes the sound smoother or harsher. Turn knob to toggle on and off.

- meter displays the voltage being generated, 0-1 volts. Use it for CV (control voltage).

- solid wood box.

- no batteries/power required, it's generated by you!

- measures about 9x5x5"