Passwords establish the identity of a user, and they are an essential component of modern information technology. In this article, I describe one-time passwords: passwords that you use once and then never again. Because they’re used only once, you don’t … Continue reading →

Domotics (home automation) control systems are among the most innovative and rewarding design projects creative electrical engineers can undertake. Let’s take a look at an innovative Beagle Board-based control system that enables a user to control lights with a 10.1˝ capacitive touchscreen. … Continue reading →

Are you planning an IR communications project? Do you need to choose a microcontroller? Check out the information Cornell University Senior Lecturer Bruce Land sent us about inexpensive IR communication with Atmel ATmega microcontrollers. It’s another example of the sort … Continue reading →

Would you like to incorporate an electronic compass in a consumer product you’re designing or a personal device you’re constructing? If so, you’ll do well to understand as much as possible about the differences between various sensors and how certain … Continue reading →

Why shell out hundreds or thousands of dollars on various home control systems (HCS) when you have the skills and resources to build your own? You can design and implement sophisticated Internet-enabled systems with free tools and some careful planning. … Continue reading →