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 ...

Basic circuit diagram of one of its channels is shown below ... Also note at this point that, if you want perfect galvanic-isolation, do not link Arduino’s ground rail (Gnd) to the relay module’s ...

Here is the circuit of an Arduino-based Panic Alarm! The wiring is very simple so that even a novice can construct ... An additional Electro-Magnetic Relay (EMR) is also attached to the interface ...