LED & Light Circuits - Page 2

Simple LED Emergency Light Circuit

A very simple and useful circuit of a emergency lamp. The circuit is using 12 volt battery. The circuit will turn on 1 watt LED when there is no light on the surface of the LDR...

555 LED Flasher

This is a 555 led flasher circuit this circuit will blink many LEDs and give rotating effects. The circuit is very easy to build, 555 timer IC is very common now a days you will find it easily...

Simple Basic LED Circuit

A basic led circuit is nothing more than 3 simple things which are a battery, a current limiting resistor and an LED. A current limiting resistor is used to provide...

Simple USB Lamp Circuit

Do you know that your computer USB port have 5 volt dc current? Yes your computer USB is a very useful voltage source to light up a bright white LED which is very useful for many purposes...

Sound Activated LED Flasher Circuit

This is a sound activated LED flasher circuit. The circuit will start flashing two LEDs when it receive any sound from the condenser mic....

LED Blinker

This is a low cost electronic project which is easy to build it is an ideal project for parties. The Light Emitting Diode (LED) given in this circuit goes ON/OFF continuously and gives good looking flashing effects. You can use many neon bulbs and fix them any place you want to get the great looking blinking effects....

How to Connect/Wire LEDs

For connecting LEDs first of all it is require to know their connecting points or connection polarity clearly. The picture shown below is describing the poliraty of a LED...

12V LED Lamp Circuit

A very useful project of a 12V LED Lamp circuit. This led circuit is very simple consist of 5 resistors and 15 super bright white 5mm LEDs ...

LED Night Light / Lamp

Here is a simple LED night light circuit which can be used as a room night lamp. The circuit is simple and can be built with few components...

LED Chaser Using CD 4017

A simple circuit of a LED chaser using CD 4017 IC. 4017 is a CMOS decade counter IC. It is also called Counter or Divider. With the help of this chip...

LED Sequencer / Chaser Using NE555 & CD 4017

CD4017 is a CMOS counter IC consist of 16 pins. This IC gives 10 outputs according to the clock pulse it receives from the clock input, which is pin 14...

Light Activated LED

A simple and interesting project of a light activated LED circuit, which will light up an LED when receives light. The circuit is very easy to build...

Dark Detector LED Using LDR

Here is a project of a simple dark detector LED circuit. An LDR is used in this circuit for sensing the light and dark conditions...

Light Activated LED Using SCR

In this circuit the SCR is working as a switching device. When the LDR will receive light its resistance will decrease which will switch on the SCR and the LED becomes activated...

Dark Activated LED Using SCR

Here is a circuit of a dark activated LED using SCR. In this circuit the SCR is working as a switch. When the LDR will receive no light it will activate the...

Automatic Night Lamp 230V

Here is a project of a simple automatic night lamp circuit which will automatically activate an AC lamp / bulb when sun set or if the circuit will receive no light...

Morning Or Light Activated Alarm

A very interesting project of a light activated alarm or morning alarm circuit. The circuit will produce a beautiful melody when it will detect light.

LED Table Or Reading Lamp

This Led table or reading lamp circuit can be used for many purposes for example as a reading lamp for bed, desktop or table lamp, keyboard lamp...

Automatic Solar Garden Light

A very useful simple to build automatic solar garden light circuit that is able to serve as a night lamp for your garden or other places. The circuit is very easy to build...

Street Light Or Lamp Circuit

Here is a very useful project of an automatic street light or lamp circuit which can be used to activate your outdoor lights like garden lamps, night lights automatically when...

Flip Flop LED Flashing Circuit

A very interesting schematic of Flip flop LED flashing circuit. The circuit actually is an astable multivibrator which starts blinking LEDs one by one when...

LED Driver Circuit

This simple LED driver circuit can be used to drive many types of high power LEDs of different watts.  The circuit is using LM317T voltage regulator. LM317 is a...

12v Solar LED Night Activated Lamp

Figure shows a great project / schematic of a 12V solar LED night activated lamp circuit. This is a versatile project and can be used for variety of purposes...

LED Dimmer Circuit

Here is a very easy and useful schematic of an LED dimmer circuit. The circuit is using a famous voltage regulator IC LM317T. This IC can also be used as a...

Simple LED Dimmer Circuit

If you want to control the brightness of few LEDs then this simple dimmer circuit will do the job. The circuit is using 1K ohms potentiometer of 1or 2 watt...

Emergency Light

The figure shows an automatic emergency light circuit diagram. The circuit is using 18 super bright white LEDs which will activate automatically in the absence of electricity...

ON OFF Relay Circuit (Automatic)

Here is a very useful project of an automatic on off relay circuit. The circuit can be used as a car headlight or brake light flasher or flashing an AC lamp etc...

Relay Flasher Circuit

Here is a very simple and useful schematic of a relay flasher circuit. The circuit can perform variety of flashing tasks for example it can be used as a...

Dark Activated Relay Switch Using NE555 IC

Here is a very simple dark activated relay switch using NE555 IC. NE555 is a well known IC comes in eight pin dip package. This IC can be used to build a...

Flip Flop Relay

A very useful, easy and interesting project of a flip flop relay circuit using a 555 IC. The circuit will on and off both the relays one by one continuously and hence any load...

Car Brake Light Or Headlight Flasher

The schematic shown here can be used as a circuit for Car brake light or headlight flasher for flashing two 10 watt 12 volt lamps in car or any vehicle...

555 Flip Flop LEDs

Here is a project of a 555 flip flop LED circuit. The circuit is able to blink 24 super bright white LEDs. The circuit is build around a famous 555 timer IC...

Morning / Sunrise Alarm

An interesting project of a morning / sunrise alarm circuit which will produce a beep-beep alarm sound and flashes an LED when the sunrises...

light Intensity Meter

This simple light intensity meter circuit can be used to determine the intensity of light in a wide variety of electronic projects and experiments...

Touch Lamp Circuit

The figure below shows a project / schematic of a touch lamp circuit. The circuit will activate and deactivate two 1 watt LEDs by touching the ON and OFF...

LM741 Light Sensor Relay Switch

The figure below shows a project / schematic of LM741 light sensor relay switch circuit. The circuit is quite sensitive and will activate the relay when a small...

Dark Sensor Relay Switch Using LM741

Here is the project/schematic of LM741 dark sensor relay switch circuit. The circuit will activate the relay switch when there is no light on the surface of LDR...

Dark Activated Alarm

The figure below shows a project of a simple dark activated alarm circuit which can be used as a dark detector or sensor at any required place...

Light Sensitive Visitor Welcome Doorbell

Here is a very interesting project of a light sensitive visitor welcome doorbell circuit. The circuit will activate the UM66 melody for a set time period when any visitor comes...

555 PWM LED Dimmer

This is a very useful and interesting project of a 555 PWM LED dimmer circuit. The circuit can be used to control the brightness of LEDs...

Simple 12V Lamp Dimmer

This is a very useful and interesting project of a 555 PWM LED dimmer circuit. The circuit can be used to control the brightness of LEDs...

Sound To Light LED Project

Here is a very interesting project of a sound to light LED circuit that can be built easily by using only few general components. The circuit will flash four LEDs at sound...

Sensitive Sound Activated LED

Here is a very sensitive sound activated LED circuit that can activate many LEDs from a distance sound or slow sound. It can also be used to flash LEDs on music...

Fading Or Pulsing LED Using 555

This is a project of a fading or pulsing LED circuit using 555 timer IC. The circuit will fade in fade out or fade on fade off a LED. You can also connect more LEDs in the...

Proximity Sensor Switch Using LDR & LED

The schematic below shows a project of a proximity sensor relay switch using LDR and LED. The circuit will activate the relay switch for a set time period...

Automatic Night Lamp

The figure below shows a project of automatic night lamp circuit. The circuit will automatically turn on the LEDs when the room gets dark...

Multiple Style Flasher Using 555

Here is a very interesting project of a multiple style flasher using 555 ICs. The circuit can be adjusted to blink the LEDs in different styles by adjusting the 100K variable...

Flip Flop / Multivibrator Relay

This is a project of a flip flop / multivibrator relay using two transistors. The circuit will continuously ON and OFF the two LEDs and 12V relays one by one...

Light Activated Relay Switch Using 555

This is a simple and efficient circuit of a light sensor switch or light activated relay switch circuit using a 555 timer IC. The circuit can activate any AC or DC device...

Laser Burglar Alarm / Security System

Here is a very sensitive and long range laser burglar alarm circuit for security purposes that can detect a small interruption in the laser beam coming to the laser receiver...

Automatic Night Light / Lamp Using 555

The schematic given here is a project of an automatic night light / lamp using 555 IC. The circuit will automatically activate six 5mm LEDs at night when...

230V LED Flasher Using 555

This simple project of 230V LED flasher using 555 can be used to flash 12 or more LEDs with the mains supply. The circuit is easy to make and using...

Traffic Light Project

This is a project of a traffic light circuit. The circuit is using a CD4017 IC and few discrete components. CD4017 is a 16 pin DIP CMOS decade counter IC...

Simple Laser Security Alarm

This is a project of a very smiple laser security alarm circuit. The circuit can be used as a laser door alarm, laser motion detector, laser trip wire alarm...

230V Bulb / Lamp Flasher Using 555

The schematic shown here is a project of a simple 230V bulb or lamp flasher circuit. The circuit is using few low cost components...

Laser Light Activated Alarm Using 555

Here is a very simple laser light alarm circuit using 555 IC. The circuit will activate a peizo buzzer for few seconds when laser light falls on the surface of LDR...

Electronic Coin Toss

The figure below shows a very interesting project of electronic coin toss circuit. The circuit is a good alternative of coin toss. It can also be used as an...

Light Dark Sensors Using CA3140 IC

Here are the circuits of light dark sensors using CA3140 IC. CA3140 is an op amp IC that is used in voltage comparator mode in these circuits...

Ultra Sensitive Light Sensor

A simple and highly sensitive light sensor that can detect a very small amount of light in complete darkness from far away distance or even a small amount of moonlight...

Automatic Night Lamp With Triac

This is a project of an automatic night lamp using a triac. The circuit is simple and low cost and can be used to automatically switch on any 60 to 100 watt AC lamp...

Automatic Electronic Weekly Calendar With Alarm

The figure below shows a very interesting project of an automatic electronic weekly calendar circuit with alarm. It will show a visual indication of each day...

Light Activated Timer

The figure below shows a very useful project of a light activated timer circuit. The circuit will activate the timer one time for a preset time period no matter if the light...

Dark Activated Timer

Here is the circuit of a dark activated timer switch that can switch ON a relay for a preset time period in the darkness...

Dark Activated LED Flasher

This is a very interesting project of a dark activated led flasher circuit. The circuit flashes two LEDs in flip flop manner when there is no light on the surface of the LDR...

Sound Activated 555 LED Flasher

Here is a very interesting project of a sound activated 555 led flasher circuit. The circuit will blink two LEDs in a flip flop manner for a present time period when any sound...

Music Dancing LEDs

This music dancing LEDs circuit is using ten LEDs, which will blink one after one on sound or music. The circuit is using two ICs and can be divided into two parts...

Simple LED Flasher Using 2N2646 UJT Transistor

Here is a very simple circuit of a LED flasher using a 2N2646 transistor. 2N2646 is a PN unijunction transistor or in short it is called UJT...

Simple LED Sequencer

There are many led sequencer circuits are available which uses integrated circuits. But the circuit shown here is simple and can be built using discrete parts...

Light Sensor Using LM3909 IC

The figure below shows a project of a light sensor or detector circuit using lm3909 IC. LM3909 is an 8 pin dip package LED flasher IC. The complete low power flasher...

555 Flip Flop With Many LEDs

Here is another circuit of a 555 flip flop with many LEDs. The output current of the 555 timer IC is not more than 200mA due to which it can drive a small number of LEDs...

7 Segment Counter Display

Here is another circuit of a 555 flip flop with many LEDs. The output current of the 555 timer IC is not more than 200mA due to which it can drive a small number of LEDs...

6W fluorescent lamp driver

This simple 6 Watt fluorescent lamp driver circuit can be used to operate a 6 watt fluorescent lamp from a 6V supply...

Automatic Dual Day & Night Switch Using 555

This is a very useful project of an automatic dual day night switch using a single 555 timer IC. The circuit will serve as a sensor switch for both day and night...

Dark Activated Fluorescent Lamp Flasher

This dark activated fluorescent lamp flasher circuit automatically activate in dark or at night and turns off at morning or in light. The circuit can be used as a visual indicator...

12V Dark Activated Fluorescent Lamp Flasher

Here is an another circuit of dark activated fluorescent lamp flasher. The previous circuit of dark activated fluorescent lamp flasher is operated from...

Simple Power Failure LED Emergency Lamp

This is a project of a simple power failure LED emergency lamp circuit using transistors. The circuit is very useful and automatically activates a 1 watt LED in the...

Light Activated Alarm Using 555 Timer IC

The figure below shows project of a light activated alarm circuit using 555 timer IC. The circuit will produce sound when light falls on the surface of the LDR...

Dark Activated Alarm Using 555 Timer IC

This is a project of a dark activated alarm circuit using a 555 timer IC. It will produce an audible alarm when there is not light on the surface of the LDR...

Simple 220V Mains Indicator LED

Here is a very useful project of a simple 220V mains indicator LED circuit. The circuit can operate a single 3.6V LED directly from 220V AC...

LED Flasher With One Year Battery Life

Here is a very useful project of a simple 220V mains indicator LED circuit. The circuit can operate a single 3.6V LED directly from 220V AC...

Laser Diode Driver

A laser diode driver circuit is a very important device to operate a laser diode because a laser diode is a current operated device. You can also drive a laser diode...

Night Activated PIR Motion Sensor Lamp

This night activated PIR motion sensor lamp circuit can activate any type of AC or DC lamp when it will sense any person in the range of 5 to 10 meters...

Dark Activated LED Fader

This is an interesting project of a dark activated led fader circuit. The circuit can fade in and out three leds when the light is absent on the surface of the LDR...

Dark Activated Buzzer & Flasher Using 556 IC

Here is an interesting project of a dark activated buzzer & flasher using 556 IC. 556 is a dual timer IC contains two 555 timers in one package...

Laser Trip Wire Alarm Using 556 IC

This article describes a very interesting and useful project of a laser trip wire alarm using 556 IC. With the help of few mirrors and low cost electrical parts you can...

Smart Morning Alarm

This smart morning alarm can activate itself automatically when sun rises. One main quality of the circuit is that you can adjust after how many minutes of sunrise...

20 LED Sequencer / Chaser Using 555 & 4017 ICs

The figure below shows a very interesting circuit of a 20 LED sequencer or chaser using a 555 timer and two 4017 decade counter ICs...

Sound Activated LED Using LM386 Audio Amplifier IC

Here is a project of a sound activated LED using LM386 audio amplifier IC. The circuit will activate / blink an LED on any sound like whistle, clap, human voice,...

50 To 100 LED Chaser Project

If you are looking for an easy circuit of a 50 to 100 LED chaser or sequencer then this project will work well for you. The circuit is easy to build and understand...

LED Knight Rider Using 4017

The figure below shows a very interesting project of a LED knight rider built using a 4017 IC, three transistors and few other discrete components...

Automatic Street Light Using 555 Timer IC

This is a project of an automatic street light using 555 timer IC. The circuit will automatically activate a 230V lamp on sun set and automatically switch it OFF when...

Simple 230V AC Lamp Dimmer

This simple 230V AC lamp dimmer circuit can be used to control the brightness of a 100 watt lamp. The dimming of the AC lamp is needed on many occasions for...

Sound Activated Knight Rider / LED Chaser

Here is a very interesting project of a sound activated knight rider / LED chaser circuit. The circuit will make running LED effect from right to left for a short time period...

Camera Flash Effects Using 555 IC

The figure shows an interesting project of a camera flash effects circuit using 555 timer IC. The circuit will flash the LEDs like a camera flash and the gap between flashes...

LED Moving Message Display With CD4017 & 555 ICs

This is a simple and easy to build LED moving message display with CD4017 and a 555 timer IC. The circuit will light up each alphabet one by one and at last blink all...

Easy 220V Decoration Lights

At many occasions we require some decoration lights to decorate our homes or other places like stages, parties etc. The circuit shown here is ideal to use for...

11 LED Knight Rider Project

Here is a project of an 11 LED knight rider circuit that can chase 11 LEDs in a reverse forward manner. These LED effects look very beautiful and can be used as a piece of...

Morning Bird Using 555 ICs

The figure below shows a very interesting project of a Morning bird using 555 ICs. The circuit will automatically generates bird sound when the sun rises or any light falls...

Electronic Dice

Here is a very interesting project of an electronic dice circuit. The circuit will provide a lot of fun by showing different numbers like a dice...

Electronic Dice With Slow Down Function

This electronic dice circuit has an additional slow down function; this is an interesting feature that gives more satisfying results...

Traffic Light Project Using 555 Timer ICs

This article describes a project of a traffic light using 555 timer ICs. The circuit is using three colour LEDs which are red, yellow and green...

Fast To Slow Repeating LED Flashing Effects

Here is a project of a fast to slow repeating LED flashing effects using 555 ICs. The circuit will flash 9 LEDs from fast to slow manner...

Simple Automatic Day Night Switch

The article describes a very useful project of a simple automatic day and night switch. The circuit can perform both day & night / light & dark sensing tasks...

Light Dark Sensor Using LM393N Voltage Comparator IC

The figure below showing two projects of a simple light and dark sensor circuits using a LM393N IC. LM393N is a dual voltage comparator IC with many features...

TV Remote Jammer

This is a very interesting project of a TV remote jammer circuit. The circuit will block your TV remote completely. The circuit emits 38Khz IR beam, which is used...

Sensitive Sound Activated LED Flasher

Here is a circuit of a simple sensitive sound activated LED flasher. The circuit flashes or blinks four LEDs when any sound is received by the electret microphone...

Multiple Timing Flasher

4060 is a versatile chip and can be used for variety of oscillation, flashing, timing and clock pulses applications but these are only limited tasks we have discussed...

Random Flasher Relays

This random flasher relays circuit continuously on & off the 10 relay switches randomly. It can be used for variety of applications, like decorating homes, shops etc...

Simple 230V Mains 10 LED Flasher

Here is a project of a simple 230V mains LED flasher circuit. The circuit is consisting only four part and 10 LEDs. It is an ideal circuit when you want to make...

Automatic Delayed Turn Off Car Headlights

The figure below shows a project of an automatic delayed turn off car headlights circuit. The circuit will switch ON the headlights of your vehicle for a preset time...

Automatic Car Headlights

This circuit automatically disconnect your car headlights from the battery when the ignition switch is turned off and connects them when the ignition switch is turned on...

LED Car Doom Light

This car doom light circuit can be used in any car and vehicle that uses a 12V battery. It is using twelve 25mA super bright white or blue LEDs. The circuit is also a battery...

Automatic Delay Off LED Car Doom Light

We often forget to turn off our car doom light that continuously eats battery and as a result the battery goes flat, The circuit shown here will solve this problem...

Light Dark Sensor Using LM358 IC

The figure below shows two projects of light and dark sensors using LM358 IC. LM358 is a low cost good quality dual operational amplifier IC that is used as a comparator...

Single Chip Light Dark Sensor Switches

Here is a project of a single chip light dark sensor switches using LM358 IC. At the output of the circuit there are two relay switches, which can be adjusted to activate...

Automatic Solar Garden Light With 555 Timer

This is a project of a single chip light dark sensor switches using LM358 IC. At the output of the circuit there are two relay switches, which can be adjusted to activate...

Simple Automatic Emergency Light

This simple automatic emergency light will automatically get activated when the mains electricity goes off...

Bicycle Turn Flashing Indicator

The figure below shows an easy and low cost bicycle turning indicator circuit that can be powered with a 9V battery...

Simple DIY Bicycle Headlight

There are a variety of bicycle headlights are available in the market, but you can also make one at home very easily. The figure below shows a simple DIY bicycle...

LED Flasher Using CD4011 IC

Here is a project of a LED flasher circuit using a CD4011 CMOS IC. The circuit flashes four LEDs, two of each at a time. The number of LEDs can be increased by using a...

Automatic Washroom Light

This is a project of an automatic washroom light circuit; the circuit will automatically switch ON a washroom light when some one tries to open the washroom door and...

Motion Sensor Solar Outdoor Light

The figure below shows an automatic motion sensor solar outdoor light circuit. The circuit is completely automatic. It will charge a 6V 1.2AH lead acid battery...

555 Running LEDs

The 555 is a versatile chip and it can perform wide variety of applications. It can be used in simple to complicated projects for example from a simple multivibrator to...

Simple IR Audio Transmitter & Receiver

There are many methods of transmitting an audio signal wirelessly or through air from one place to another for example through LED lights, radio waves, microwaves...

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