In this quick Arduino tutorial I will explain how you can control a relay using the Arduino Board, one 1K and one 10K resistors, 1 BC547 transistor, one 6V or 12V relay, one 1N4007 diode and a 12V fan ...

I have a standard irrigation system with 24VAC solenoids. I have built a simple Arduino + ethernet shield connected to a 4xopto-isolated-relay board for controlling each of my 4 sprinklers. I have the ...

We may receive a commission on purchases made from links. There's a certain charm in seeing simple electronic systems at work. Don't you just get excited as you watch a mobile robot solve a maze or ...

Two new development kits that require Arduino programming skills could make it easier for the do-it-yourself set to build electronics and wearable devices. The LittleBits Arduino at Heart starter kit ...