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 ...

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 ...

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 ...

Will Fort Lauderdale’s proposed red light cameras include countdown timers to warn motorists how much time they have before the light turns yellow? I’m envisioning something similar to the timers at ...