The hardware is consists of an Arduino microcontroller (here an Arduino Uno R3) and a pre-wired soil moisture sensor module. The soil moisture sensor module , built around the LM393 comparator, gives ...

In this circuit, the infrared emitter IRED1 is modulated by connecting its anode (A) to ~38kHz signal yielded by D9 of the Arduino Uno (TP1) while its cathode (K) to a ~1kHz signal available at D8 of ...

Arduino EMF Sensor. 23 Comments . by: Mike Szczys. December 31, 2010. Title: Copy. ... treating the recharging circuit from the emergency lights as the most likely culprit.

Hi, I'm Bill. I'm a software developer with a passion for making and electronics. I do a lot of things and here is where I ...

Arduino boards are perhaps the world’s best known amateur microcontroller – cracker-sized circuit boards that cost about $30 and, say, govern the intake of information or the actions of a motor. They ...