While there have certainly been attempts at easing the Arduino learning curve, many of these still demand a new board or simplify just one aspect of a much larger universe. Olympia Circuits' new ...

Here is a simple general-purpose security alarm circuit built on the Arduino platform. It brings up an obtrusive alert signal when an intrusion/theft attempt is observed by its front-end sensor. In ...

To solve the problem without sourcing a new switch, [Jean-Noel] built his own Arduino based Dahlander switch. This consists of three relays that select the wiring configuration for each speed mode.