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RF based Wireless Remote Control 158,903
Wireless motor control through RF 76,853
Infrared (IR) sensor 72,385
Automatic night lamp 63,786
Traffic light signal 40,657
DTMF Decoder 36,235
Water level controller cum indicator circuit diagram 35,262
Light sensor using photodiode 34,252
Relay activation using TSOP 1738 32,620
Working of light dependent resistor 31,830
USB Mobile Charger Circuit Diagram 31,498
Touch switch 29,872
Audio amplifier 27,447
Fire alarm 26,294
Intruder alarm / Burglar alarm based Home Security System 26,002
Single switch motor on/off.. Clockwise/anticlockwise 24,616
Music (Data) transfer by IR by amplification 23,901
Remote Control For Home Appliances 23,428
Liquid level Alarm 22,400
Remote Controlled Toy Car 21,968
Color distinguished using LDR/Color sensor using LDR 21,217
Darkness detector 20,333
Variable power supply 19,651
Shadow Alarm using LDR 19,125
Generating time delay with 555 IC 18,840
Water Sensor Circuit 18,760
H-bridge using transistor 18,208
Automatic light/dark indicator 17,762
RF based Intruder Alarm 17,417
Water Tank Overflow Alarm 15,854
Power failure alarm 15,770
Wireless Switch Circuit Diagram 15,759
RF based Fire Alarm (Overheat Alarm) 15,561
2 in 1 Doorbell 14,692
Night Lamp using 555 14,527
555 Timer As Amplifier 14,284
9-Way Clap Switch Circuit Diagram 14,095
Music (Data) transfer by IR 13,934
Display System used in Restaurant 13,824
Water level indicator with display 13,583
Light detector 13,233
2-1 Quiz Buzzer 13,084
Magic Eye Circuit Using 4049 IC 13,044
Long range IR 12,966
Voltage Doubler Circuit Using IC555 12,763
Piezo sensor as output 12,596
Darkness Detector Alarm 12,424
Dancing LED's 12,348
555 Timer IC Tester 12,109
BCD to 7 Segment display Circuit 12,031
Bathroom Light Off Timer 11,931
Electronic Letter Box 11,720
Light dependent frequency variation using LDR 11,648
Fixed voltage power supply 10,916
Inverting amplifier using 741 10,730
Seismic sensor 10,667
Piezo sensor as input 10,644
Opamp as comparator 10,450
Automatic Wash Basin Tap Controller 10,345
Relay control by sound 10,342
Transistor as audio amplifier 10,280
Low pass filter 10,272
Transistor Tester Circuit Diagram 10,231
Simple AC to DC converter using bridge rectifier 10,017
Electronic Dice Circuit 9,878
Timer Circuit using IC CD 4060 9,753
Touch Switch Circuit using 555 Timer 9,586
Full range centigrade temperature sensor 9,520
Overheat/Overcooling circuit breaker 9,125
Bi Color LED 8,970
Electronic Code Lock Circuit 8,910
Remote Control for Devices using Cell Phone 8,815
Led Flasher Circuit 8,753
Astable mode by NAND gate 8,659
Understanding Decade Counter CD4017 8,610
Battery Level Indicator 8,454
Active high trigger for 555 in monostable mode 8,364
High Pass Filter Circuit 8,138
Vehicle Indicator Circuit 8,110
Sound Operated Switch 7,989
Sound Operated LED 7,926
Relay control through mic 7,917
Relay operation using Darlington Pair 7,868
Electronic Timer Circuit 7,757
Metronome 7,740
Differential amplifier 7,656
Automatic Fan Speed Regulator 7,550
IC 555 Based Message Display Circuit 7,397
Voltage boost by using a resistor with 78XX 7,325
Electronic Door Bell 7,260
Security Alarm for Doors, Almirah, cupboards using Opam 7,200
NAND gate monostable 7,054
Electronic alarm for cash box, lockers 6,933
Electronic Circuit: Digital Stopwatch 6,891
Sound Generation using 555 6,880
Soil Moisture Detector 6,856
Magic Eye using 555 Timer IC 6,847
Two Way Intercom 6,708
Understanding JK flip flop using CD4027 6,626
Luggage Security Alarm 6,581
90 Second Timer 6,459
Water Level Indicator with Display 6,446
Periodically Turning On & Off Mosquito Repellent Circuit Diagram 6,400
Line Following Robot 6,375
Vehicle Indicator 6,296
Refrigerator Door Alarm 6,294
4 Player Quiz Buzzer 6,286
NOT gate monostable 6,175
Random Number Generator Using 7 Segment Display 6,168
Negative supply using 555 IC 6,135
Security System 6,021
Transistor based Security Alarm 5,981
Interfacing 4026 with 7 segment display 5,869
Automatic Washroom Light Controller 5,805
Parked Vehicle Indicator 5,682
Tone generator Circuit Diagram 5,678
LDR Based Automatic Lamp 5,653
CD4049 Based LED torch 5,582
Humidity Detector Circuit 5,579
Cell Phone Based Multiple Device Controller 5,467
Non inverting amplifier 5,452
Understanding NOR Gate (CD4001) 5,438
Timer Based Code Lock 5,312
LED Lamp Using CA3140 IC 5,281
Multi Color Lighting 5,263
Electronic Code Locking System 5,259
Reminder Alarm 5,256
Exhaust Fan Circuit Diagram 5,227
Audio Amplifier using Opam 5,216
Coin Toss/Flip Simulator Circuit 5,203
Voltage Doubler Circuit Using IC 4049 5,186
NE 555 Timer based Automatic Headlight 5,179
Variable power supply and charger with emergency light 5,133
Clock with LED pendulum with tick tock sound 5,030
Toggle flip flop using CD4013 4,995
Night Lamp with Timer for Stairs 4,984
Transistor Based Secret Bell 4,921
Secure room access system 4,919
IC555 based Multicolor LED Lamp Circuit Diagram 4,908
IR to RF Converter 4,877
Conversion of NAND gate to Basic gates 4,844
CD 4060IC based Message Display Circuit 4,738
UM3561 IC Based Security Alarm 4,729
Inverting amplifier 4,722
Obstacle Avoiding Robot 4,650
Variable Power Supply From Fixed Voltage Regulator 4,644
Safety Alarm Circuit 4,611
Sound generation in audio range 4,561
Curtain Opener Circuit 4,469
Fading LEDs 4,406
CD 4013 based Sound Sensing Module 4,388
Electronic Lock using Switches 4,366
LED Based Stop Watch 4,341
Number Guessing Game 4,337
Suitcase Security Alarm 4,314
Classroom Mic 4,311
Car Reverse Horn 4,310
Flip Flop based Staircase Switch 4,242
CD 4027 Based Emergency Lighting System 4,203
CD 4013 Based Two Way Switch 4,127
Timer Circuit using IC 4026 4,113
LED Based Pendulum Circuit 4,068
Multitone Generator Circuit 4,061
Polarity cum Continuity Tester 4,059
Window and Door Guard with Light Sensor 4,039
Hearing Aid 3,991
Porch Light (Auto Turn Off Light) Circuit Diagram 3,977
Remote Tester Circuit 3,946
Automatic Power OFF timer for CD player 3,922
8 Player Quiz Buzzer 3,919
Intruder Alarm 3,845
PC Temperature Controller 3,815
CD 4060 Based Security Alarm 3,792
Multi-Utility Flashing Light 3,699
Toggle switch using CD4017 3,680
Electronic Thermometer for Beverage Temperature Measurement 3,617
Day and Night Indicator using IC 555 3,400
Inverting amplifier with signal feedback 3,347
Coin Toss Circuit on 7 Segment Display 3,340
Reaction Timer Game 3,310
Crossing Light Indicator 3,257
Conversion of NOR gate to Basic gates 3,213
Sound Scanner Circuit 3,189
Multi Sound Buzzer 3,181
NAND Gate as SR Flip Flop 3,176
Multipurpose Timer With Musical Alarm 3,125
NOR Gate as SR Flip Flop 3,082
Notepad Lamp 3,062
CD4001 IC based Lighting System 3,023
"Hit the Target" Game 2,965
Spell Effect Sign Display Circuit 2,865
Pre Set Off Timer 2,844
DIY – Homemade Melody Door Bell 2,811
Electronic Number Game 2,717
Simple RPM Counter using IC 555 2,683
Amplifier for Musical ICs 2,422
Simple Stepper Motor Driver using 555 Timer IC 2,262
Direction Pointer 2,163
Circuit Diagram to Automatically Hibernate your PC 2,058
Logic State Indicator 1,938
Smart DC fan 1,680
Auto and Manual Pulse Generator 1,535
Simple 2 Digit Auto-Manual Counter 1,499
2-Digit Object Counter 1,365
FSK Modulators using IC 555 1,324
Zero Cross Detector (ZCD) Circuit 1,202
DIY: LASER Based Pulse Transmitter and Receiver 1,170
DIY: Make Remote Operated Light Fountain 1,131
DIY : Short Range Optical Pulse Transmitter and Receiver 962
ASK Modulator using 555 Timer IC 848
Waveform Generator using LM741 646