This DIY gas leakage detector is designed for educational and basic monitoring purposes. For critical safety applications, ...

To build this DIY buzz wire game, you'd need an Arduino Nano, a 9V battery, two LEDs (red and green), a buzzer, a seven-segment LED display, a shift register for the display, and resistors for the ...

For example, at 192 (75% duty cycle) there is NO sound, at all. At a 50% duty cycle, you have about a 10% volume. The closest I've found it 256 for full, and 232 for a sort of sickly sounding 50% ...