Signals when an on-circuit battery is exhausted, 5V to 12V operating voltage A Battery-status Indicator circuit can be useful, mainly to monitor portable Test-gear instruments and similar devices. LED ...

This is the follow-up video to my recent post on fitting led indicators to my Honda crf as part of a tail tidy. Many of you ...

One of the cool new functions of iOS 5 is the ability to set the iPhone’s LED to flash for various system level alerts… but how useful is that functionality when the LED is on the back of the phone?

Almost every micro-based project that I have designed in the past 25 years has had a flashing LED, originally as a “health” indicator, but the feature has expanded to use as a status indicator where ...

A LED flashing briefly once every 5 seconds to imitate the indicator of a real alarm is the function of this dummy alarm project with the use of a 7555 timer IC. To prolong battery life, the circuit ...

The on-road relationship between urban cyclists and motorists can sometimes be a fraught one. While drivers have argued that bikes create a hazard on busy city routes, cyclists have accused motorists ...

There are plenty of utilities out there to control keyboard LED indicators, but I'm rather interested in controlling the power LED on my headless 1U rackmount. While theoretically there are tons of ...

A new hack has been discovered that gathers sensitive information from a desktop computer's tiny blinking LED lights. Researchers have successfully extracted a computer's secrets using a data-stealing ...