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Light/Laser
LV, LP, CC driver allows two alkaline or NiMH cells to steadily power a Red LED until discharged.
Automatic Street Lighting System
2013-01-24
The driving theme behind the Automatic Street Lighting System is an energy-saving streetlight schem
Mains-powered LED night-light
2012-11-09
I'm probably re-inventing the wheel, but here are a few variations of a mains-powered night-light f
120v 4-LED Night Light
2011-11-13
This circuit uses can be used as a night light. It uses a 120v Mains to power the circuit. Works li
Light Activated Switch
2011-09-04
The circuit is based on National Semiconductors comparator LM311 (IC1) and an LDR. The non invertin
Dark Detector
2011-06-16
The dark detector circuit shown here can be used to produce an audible alarm when the light inside
10 Channel Light Bulb Sequencer
2011-05-15
Here is a simple 10 channel light bulb sequencer circuit which you can build up to decorate your ho
Basic IR Communications
2011-02-07
Creating an infrared (IR) communications link can be very useful. Some examples of projects which
Strobe Light
2010-07-06
Strobe lights are widely used by disco lovers to create wonderful visual effects in disco halls and
This cct uses 4026B ICs to drive 1.5" 7 Segment LED Displays. Even at 5volts these are quite bright
240 Volts 100 Hertz 29 LED lamp
2010-07-05
This is the improved version of the LED lamp posted about 1 year ago which ran on half wave rectifi
Flashing a LED with Mouse
2010-07-05
Don’t throw your old mouse do a fun project with it. This is the simplest project I have ever mad
Triac light bulb flasher
2010-07-05
This 800 W light bulb flasher operates directly off the line and needs no transformer. Power for th
Digital slave flash trigger
2010-07-05
This unique circuit has been tried with all three of my cameras and two others and works perfectly.
7-Segment LED Counter (binary and base 10)
2010-07-05
Here is something that I was able to build, it basically takes the pulse from a 555 timer and goes
Laser or IR beam alarm system
2010-07-05
This is a cool little circuit that i made for a school project. It can be used as one of those thin
