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LED projects and circuits (68)

Browse through a total of 68 led projects.

arduino rgb led circuit

Arduino RGB LED Color Wand

T.K. Hareendran - 04/13/2014

Here is an artistic Arduino project for the fun-minded. The circuit is an Arduino RGB LED controller running [...]
led constant current schematic

LED Constant Current

P. Marian - 12/17/2013

This is a very simple led constant current design using only 2 transistors, 2 resistors and an LED. [...]
led at 220 volt

LED at 220V Circuit

P. Marian - 10/16/2013

LED has become more and more popular for use as light indicator because of its low cost and [...]
led lantern circuit

Portable LED Lantern

T.K. Hareendran - 08/19/2013

This circuit is a simple emergency light with 20 “white straw hat” LEDs. One advantage of this little [...]
LED solar powered lantern lights schematic

LED Solar Lantern Lights

T.K. Hareendran - 03/10/2013

Circuit of the LED solar lantern lights presented here is built around one 6V/1W Solar Panel (PhotoVoltaic Panel) [...]
white led night light schematic

White LED Night Light

T.K. Hareendran - 03/07/2013

White Light Emitting Diodes recently available can be used as a powerful alternative to incandescent lamps in lighting [...]
555 led flasher figure 1

555 LED Flasher

P. Marian - 03/02/2013

This is a small size led flasher built with the 555 timer IC that is powered from 2 [...]
human reaction time test schematic

Test Human Reaction Time with the 555 IC

P. Marian - 02/26/2013

With this simple circuit that is built with the 555 IC you can test human reaction time. You [...]
PIR LED security light circuit schematic

LED Security Light with PIR Motion Sensor

T.K. Hareendran - 02/25/2013

Here is one simple circuit of a general-purpose white LED security light with Passive Infrared (PIR) Motion sensing [...]
arduino led project

Simple Arduino LED Projects

P. Marian - 02/05/2013

In this article I will add some simple Arduino LED projects starting with basic ones like how to [...]
simple led tester circuit schematic

Simple LED Tester

Jim Keith - 02/04/2013

Do not let its extreme simplicity deceive you — this thing is useful! I have made many over [...]
universal wide voltage range led

Wide Voltage Range LED

P. Marian - 01/15/2013

LEDs are well-known for their current consumption, and sometimes a resistor is necessary to limit the current at [...]
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