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 ...

treating the recharging circuit from the emergency lights as the most likely culprit. Since the ECG is many times more sensitive to EMF than the Arduino, this turns out to be a quick and easy way ...

The end result is you can have the circuit simulator on the left of the screen and a Web-based Arduino IDE on the right ... and you might even consider a sample and hold on that input to make ...

Arduino boards are perhaps the world’s best known amateur microcontroller – cracker-sized circuit boards that cost about $30 ... who wrote up the instructions to build an Arduino-based sensor system ...