Using a circuit simulator can get you part of the way and software simulators abound. But cosimulation — simulating both analog circuits ... output from the Arduino is the input to the circuit).

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 small Arduino boards becoming more popular, Olympia Circuits is jumping into the ... LED - Two momentary pushbutton switches for digital inputs - One thumbwheel potentiometer to introduce ...