Analog Sensors In the first sketch, you turned the LED on and off by writing to the Arduino's digital pin. What if you wanted something in between—say, to fade on and off? Say hello to a tiny little ...

This is a simple arduino project for a soil moisture ... s value is to try different values or use a potentiometer. Insert the probes into the soil that has the desired moisture when to light up the ...

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 ...

With a little help from an Arduino mega ... The rest of the circuit is straightforward. It appears he uses a potentiometer for a rough regulation of the current going to the coils, doing the ...