Apart from the Arduino UNO, the circuit consists ... close proximity sensor drives an infrared emitter to illuminate an object, then looks for the reflectance from the object to detect its close ...

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 ...

It's divided into five top-level categories: On the Docs homepage, you'll also see a Rapid Access section for the frequently visited pages like the Libraries, Built-in Examples, and Language ...

Because of the affordability and seeming ubiquity of the Arduino platform, they have been hard at work this last month trying to get their Geiger counter sensor board for an Arduino out the door.