One of the greatest modern aids for driving is not intended for drivers at all. I refer to the digital displays at an increasing number intersections that count down the seconds until the traffic ...

Comprising a microprocessor, an LCD, a 32.768-kHz crystal, and little else, the basic countdown-timer circuit in Figure 1 operates from a commonly available CR2032 lithium-coin-cell battery. Based on ...

SAN FRANCISCO – You’re stuck at a red light. It’s taking forever. How much time until the light turns green? Ten seconds? Twenty seconds? A minute and a half? Would you be more patient if you knew ...

For one of my hobby projects, I needed to add a small countdown timer at an affordable cost. Fortunately, a DigiSpark Attiny85 development board was lying around on my workbench. The next component ...

Using the Alexa Timer is so easy, it’s the first skill many Echo smart speaker owners try out. Just say, “Alexa, set a timer for 12 minutes,” to start a countdown. When we bought our first Echo Dot ...