This simple Mock Flasher LED simulates the indicator of a sophisticated Alarm system. It can be placed in doors, gates and vehicles to confuse intruders. The circuit is too simple using a Unijunction ...

An LED is commonly used as a "power on" indicator for many electronic devices. For the LED to produce discernible visible light in daylight, the forward-bias current needs to be in the moderate range ...

Regular Hackaday readers will be familiar with the work of Boldport’s [Saar Drimer] in creating beauty in printed circuit board design. A recent work of his is the Widlar, a tribute to the legendary ...

This is a small size led flasher built with the 555 timer IC that is powered from 2 x 1.5V batteries. The circuit can be used as a flashing metronome, dark room timer, memo-reminder or other similar ...

We've spent the last several months wiring Scarlett, our '72 coupe project car, adding fuses, relays, electric windows and other features to make the car more user-friendly once she's back on the road ...

Recently I converted the parking lights/turn signals and the taillights/turn signals in my 1956 Chevrolet to LEDs. The good part is they are really bright; the bad part is now the turn signals won't ...

Maybe I shouldn’t be surprised, the led flasher modelled in LTspice works, just about as intended – nice crisp flashes at about the right rate. Seeing as everything is relying on Vbes and Vfs, the ...

If you’ve ever been concerned about privacy in a rental space or hotel room, you might have considered trying one of the many “spy camera detectors” sold online. In the video after break [Big Clive], ...

We’ve spent the last several months wiring Scarlett, our ’72 coupe project car, adding fuses, relays, electric windows and other features to make the car more user-friendly once she’s back on the road ...