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RF based Wireless Remote Control 151,606
Wireless motor control through RF 73,217
Infrared (IR) sensor 67,041
Automatic night lamp 61,522
Traffic light signal 38,340
DTMF Decoder 34,528
Water level controller cum indicator circuit diagram 33,439
Light sensor using photodiode 32,562
Relay activation using TSOP 1738 31,609
Working of light dependent resistor 29,914
Touch switch 28,764
USB Mobile Charger Circuit Diagram 28,023
Audio amplifier 26,029
Intruder alarm / Burglar alarm based Home Security System 24,525
Fire alarm 24,394
Single switch motor on/off.. Clockwise/anticlockwise 23,765
Music (Data) transfer by IR by amplification 23,304
Liquid level Alarm 21,678
Color distinguished using LDR/Color sensor using LDR 20,283
Remote Control For Home Appliances 19,408
Variable power supply 18,931
Darkness detector 18,840
Remote Controlled Toy Car 18,554
Generating time delay with 555 IC 17,991
Shadow Alarm using LDR 17,710
Water Sensor Circuit 17,361
H-bridge using transistor 17,245
Automatic light/dark indicator 16,797
RF based Intruder Alarm 16,796
Power failure alarm 14,910
RF based Fire Alarm (Overheat Alarm) 14,696
Water Tank Overflow Alarm 14,345
Wireless Switch Circuit Diagram 14,035
2 in 1 Doorbell 14,018
555 Timer As Amplifier 13,341
Music (Data) transfer by IR 13,294
Night Lamp using 555 13,293
Light detector 12,380
Water level indicator with display 12,343
9-Way Clap Switch Circuit Diagram 12,213
2-1 Quiz Buzzer 12,174
Long range IR 11,943
Voltage Doubler Circuit Using IC555 11,812
Magic Eye Circuit Using 4049 IC 11,652
Light dependent frequency variation using LDR 11,128
555 Timer IC Tester 11,075
Bathroom Light Off Timer 10,601
Dancing LED's 10,600
Fixed voltage power supply 10,321
Inverting amplifier using 741 10,234
Electronic Letter Box 10,234
BCD to 7 Segment display Circuit 10,059
Seismic sensor 10,053
Relay control by sound 9,907
Opamp as comparator 9,731
Piezo sensor as input 9,720
Low pass filter 9,571
Transistor Tester Circuit Diagram 9,458
Transistor as audio amplifier 9,445
Simple AC to DC converter using bridge rectifier 8,996
Electronic Dice Circuit 8,970
Full range centigrade temperature sensor 8,929
Touch Switch Circuit using 555 Timer 8,799
Timer Circuit using IC CD 4060 8,627
Overheat/Overcooling circuit breaker 8,502
Bi Color LED 8,380
Led Flasher Circuit 8,193
Astable mode by NAND gate 8,166
Active high trigger for 555 in monostable mode 7,901
Automatic Wash Basin Tap Controller 7,888
Electronic Code Lock Circuit 7,561
Relay control through mic 7,506
Vehicle Indicator Circuit 7,504
High Pass Filter Circuit 7,481
Relay operation using Darlington Pair 7,292
Differential amplifier 7,264
Metronome 7,244
Sound Operated LED 7,145
Understanding Decade Counter CD4017 7,131
Electronic Timer Circuit 7,010
Remote Control for Devices using Cell Phone 6,976
Sound Operated Switch 6,972
Voltage boost by using a resistor with 78XX 6,960
IC 555 Based Message Display Circuit 6,747
Battery Level Indicator 6,713
NAND gate monostable 6,651
Security Alarm for Doors, Almirah, cupboards using Opam 6,548
Electronic alarm for cash box, lockers 6,439
Sound Generation using 555 6,321
Electronic Door Bell 6,285
90 Second Timer 5,958
Periodically Turning On & Off Mosquito Repellent Circuit Diagram 5,927
Vehicle Indicator 5,867
NOT gate monostable 5,833
Luggage Security Alarm 5,830
Negative supply using 555 IC 5,826
Electronic Circuit: Digital Stopwatch 5,796
Refrigerator Door Alarm 5,672
Automatic Fan Speed Regulator 5,646
Piezo sensor as output 5,569
4 Player Quiz Buzzer 5,485
Understanding JK flip flop using CD4027 5,407
Magic Eye using 555 Timer IC 5,389
Security System 5,374
Random Number Generator Using 7 Segment Display 5,333
Water Level Indicator with Display 5,292
Tone generator Circuit Diagram 5,230
Non inverting amplifier 5,117
Soil Moisture Detector 5,067
CD4049 Based LED torch 5,049
Parked Vehicle Indicator 4,985
Audio Amplifier using Opam 4,893
Interfacing 4026 with 7 segment display 4,887
Two Way Intercom 4,885
Multi Color Lighting 4,853
Coin Toss/Flip Simulator Circuit 4,773
Voltage Doubler Circuit Using IC 4049 4,758
Line Following Robot 4,722
LED Lamp Using CA3140 IC 4,680
Night Lamp with Timer for Stairs 4,617
Transistor based Security Alarm 4,594
Reminder Alarm 4,564
Humidity Detector Circuit 4,563
NE 555 Timer based Automatic Headlight 4,561
Darkness Detector Alarm 4,542
Timer Based Code Lock 4,482
Understanding NOR Gate (CD4001) 4,480
Transistor Based Secret Bell 4,446
CD 4060IC based Message Display Circuit 4,428
Inverting amplifier 4,405
Secure room access system 4,380
Toggle flip flop using CD4013 4,368
Electronic Code Locking System 4,355
Exhaust Fan Circuit Diagram 4,337
LDR Based Automatic Lamp 4,320
Sound generation in audio range 4,273
IC555 based Multicolor LED Lamp Circuit Diagram 4,220
Conversion of NAND gate to Basic gates 4,207
IR to RF Converter 4,196
Variable power supply and charger with emergency light 4,178
Clock with LED pendulum with tick tock sound 4,163
UM3561 IC Based Security Alarm 4,120
Automatic Washroom Light Controller 4,110
CD 4013 based Sound Sensing Module 3,997
Safety Alarm Circuit 3,994
Variable Power Supply From Fixed Voltage Regulator 3,994
Display System used in Restaurant 3,920
Fading LEDs 3,826
Flip Flop based Staircase Switch 3,812
Number Guessing Game 3,751
Obstacle Avoiding Robot 3,633
CD 4027 Based Emergency Lighting System 3,624
CD 4013 Based Two Way Switch 3,613
Suitcase Security Alarm 3,597
LED Based Pendulum Circuit 3,597
Cell Phone Based Multiple Device Controller 3,588
Automatic Power OFF timer for CD player 3,578
Timer Circuit using IC 4026 3,548
Car Reverse Horn 3,531
Multitone Generator Circuit 3,513
Polarity cum Continuity Tester 3,476
Curtain Opener Circuit 3,445
Multi-Utility Flashing Light 3,442
LED Based Stop Watch 3,437
Porch Light (Auto Turn Off Light) Circuit Diagram 3,416
Remote Tester Circuit 3,404
CD 4060 Based Security Alarm 3,314
PC Temperature Controller 3,267
Intruder Alarm 3,245
Classroom Mic 3,213
Window and Door Guard with Light Sensor 3,208
Inverting amplifier with signal feedback 3,107
Electronic Lock using Switches 3,068
Electronic Thermometer for Beverage Temperature Measurement 2,945
8 Player Quiz Buzzer 2,868
Toggle switch using CD4017 2,866
Conversion of NOR gate to Basic gates 2,830
NAND Gate as SR Flip Flop 2,785
Coin Toss Circuit on 7 Segment Display 2,776
Hearing Aid 2,776
CD4001 IC based Lighting System 2,688
Multipurpose Timer With Musical Alarm 2,664
NOR Gate as SR Flip Flop 2,647
Reaction Timer Game 2,539
Crossing Light Indicator 2,524
Notepad Lamp 2,493
"Hit the Target" Game 2,461
Spell Effect Sign Display Circuit 2,442
Pre Set Off Timer 2,441
Multi Sound Buzzer 2,440
Sound Scanner Circuit 2,394
Electronic Number Game 2,259
Amplifier for Musical ICs 2,032
Direction Pointer 1,764
Circuit Diagram to Automatically Hibernate your PC 1,610
Logic State Indicator 1,552
Simple Stepper Motor Driver using 555 Timer IC 1,314
Auto and Manual Pulse Generator 947
Simple RPM Counter using IC 555 789
Simple 2 Digit Auto-Manual Counter 755
Zero Cross Detector (ZCD) Circuit 652
2-Digit Object Counter 555
DIY : Short Range Optical Pulse Transmitter and Receiver 409
DIY: LASER Based Pulse Transmitter and Receiver 286
ASK Modulator using 555 Timer IC 143
DIY: Make Remote Operated Light Fountain 138
FSK Modulators using IC 555 100
Waveform Generator using LM741 92

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