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 ...

This simple and cheap circuit is not just for Christmas! There are just two resistors, a small-signal transistor such as a BC547, one ‘flashing’ LED and a string of ‘normal’ LEDs. The flashing LED ...

Do you know when or why your vape pen blinked? Thanks to the manufacturers for using LED flashing indicators in the lean design. These different color blinking lights send a variety of signals to the ...

You know how it is. You’ve got that new project running, and while it doesn’t consume much power, it also doesn’t give much indication of whether it’s functioning or just sitting there with a dead ...