Here is a useful circuit for Arduino lovers ... being measured to within the range of the Arduino analog inputs. Code in the Arduino sketch is then used to compute the actual voltage being measured.

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 ...

Before I start talking about this really cool thing called Arduino ... a flex sensor to (you guessed it) control an LED. Basically, let's use the flex sensor in place of the potentiometer of the ...