[Rockwell] sent us an update on his traffic light hacking. Dedicated readers will remember seeing this legally attained traffic signal controlled through a parallel port from back in 2005. The new … ...

To do so, the Arduino was set up to monitor the BUSY line on the printer’s parallel port, setting the CTS line active whenever the busy line was inactive. With our task made clear, hours of ...

Although it is a respectable drive, handling hardware and software in the I2C background might not an easy chore for many Arduino beginners. So we are forced to introduce another simple alternative to ...

Tip: Once you’re done programming the Arduino, leave the lights on. It’ll make it easier to attach the strand to the sweater since you’ll be able to see the thread better. 7.

A light-based, highly parallel processor may just be the (rather bulky) co-processor that we've been looking for to handle these tasks. Solutions are downhill One way to compute a solution to a ...

In one device, photothermal microcavities simultaneously measure light power and wavelength for potential applications in ...

The Arduino uses latitude and longitude to help decide when to click on the lights, so it's incredibly accurate. Otherwise, the build just includes an on/off switch, a Tiny RTC, a time adjustment ...

This Arduino-powered Shiftbrite LED ambilight setup takes things a step further by automatically adjusting the color and intensity of the ambient lights on the back of the display to match ...

Based on hint 1, it seems the lights are in series. Based on hint 2, it seems they are in parallel. The answer is that the lights are in series. Yup. But how can this be?