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

If you are designing your own intelligent “Graden Computer” with an optional digital plant moisture sensor/water pump controller that lights an LED to alert the user when it is time to water a potted ...

This is a simple arduino ... plant needs water. Adjust the potentiometer and see the point at which it starts to light. Measure the potentiomenter current value and replace it with a fixed resistor. I ...