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RF based Wireless Remote Control 159,671
Wireless motor control through RF 76,537
Infrared (IR) sensor 73,167
Automatic night lamp 63,998
Traffic light signal 41,455
DTMF Decoder 36,189
Water level controller cum indicator circuit diagram 35,657
Light sensor using photodiode 34,695
Relay activation using TSOP 1738 32,827
Working of light dependent resistor 32,348
USB Mobile Charger Circuit Diagram 32,029
Touch switch 29,972
Audio amplifier 27,578
Fire alarm 26,546
Intruder alarm / Burglar alarm based Home Security System 26,309
Single switch motor on/off.. Clockwise/anticlockwise 24,787
Music (Data) transfer by IR by amplification 24,140
Remote Control For Home Appliances 23,795
Remote Controlled Toy Car 22,505
Liquid level Alarm 22,396
Color distinguished using LDR/Color sensor using LDR 21,231
Darkness detector 20,815
Variable power supply 19,661
Shadow Alarm using LDR 19,230
Generating time delay with 555 IC 19,028
Water Sensor Circuit 18,929
H-bridge using transistor 18,370
Automatic light/dark indicator 17,899
RF based Intruder Alarm 17,373
Water Tank Overflow Alarm 16,964
Power failure alarm 15,873
Wireless Switch Circuit Diagram 15,815
RF based Fire Alarm (Overheat Alarm) 15,330
Night Lamp using 555 14,715
2 in 1 Doorbell 14,677
555 Timer As Amplifier 14,458
9-Way Clap Switch Circuit Diagram 14,164
Water level indicator with display 14,027
Music (Data) transfer by IR 13,911
Light detector 13,413
2-1 Quiz Buzzer 13,153
Magic Eye Circuit Using 4049 IC 13,120
Long range IR 12,985
Voltage Doubler Circuit Using IC555 12,845
Dancing LED's 12,695
BCD to 7 Segment display Circuit 12,571
555 Timer IC Tester 12,378
Bathroom Light Off Timer 12,044
Electronic Letter Box 11,794
Light dependent frequency variation using LDR 11,652
Fixed voltage power supply 10,904
Inverting amplifier using 741 10,817
Seismic sensor 10,697
Piezo sensor as input 10,687
Transistor as audio amplifier 10,524
Opamp as comparator 10,453
Transistor Tester Circuit Diagram 10,372
Relay control by sound 10,325
Low pass filter 10,298
Timer Circuit using IC CD 4060 10,218
Electronic Dice Circuit 10,040
Simple AC to DC converter using bridge rectifier 10,008
Touch Switch Circuit using 555 Timer 9,660
Full range centigrade temperature sensor 9,572
Automatic Wash Basin Tap Controller 9,438
Bi Color LED 9,077
Electronic Code Lock Circuit 9,072
Led Flasher Circuit 8,997
Overheat/Overcooling circuit breaker 8,967
Astable mode by NAND gate 8,750
Understanding Decade Counter CD4017 8,680
Remote Control for Devices using Cell Phone 8,632
Active high trigger for 555 in monostable mode 8,454
Battery Level Indicator 8,427
High Pass Filter Circuit 8,193
Vehicle Indicator Circuit 8,188
Sound Operated LED 8,030
Sound Operated Switch 8,003
Relay operation using Darlington Pair 7,995
Relay control through mic 7,954
Electronic Timer Circuit 7,802
Metronome 7,725
Differential amplifier 7,698
Automatic Fan Speed Regulator 7,604
IC 555 Based Message Display Circuit 7,507
Voltage boost by using a resistor with 78XX 7,397
Electronic Door Bell 7,274
Security Alarm for Doors, Almirah, cupboards using Opam 7,189
NAND gate monostable 7,126
Sound Generation using 555 7,054
Electronic Circuit: Digital Stopwatch 7,048
Electronic alarm for cash box, lockers 6,963
Magic Eye using 555 Timer IC 6,958
Understanding JK flip flop using CD4027 6,944
Soil Moisture Detector 6,603
Water Level Indicator with Display 6,595
Luggage Security Alarm 6,522
Random Number Generator Using 7 Segment Display 6,468
90 Second Timer 6,446
Periodically Turning On & Off Mosquito Repellent Circuit Diagram 6,406
Refrigerator Door Alarm 6,365
Vehicle Indicator 6,348
Line Following Robot 6,285
4 Player Quiz Buzzer 6,228
Negative supply using 555 IC 6,211
Two Way Intercom 6,199
Interfacing 4026 with 7 segment display 6,196
NOT gate monostable 6,190
Security System 6,077
Piezo sensor as output 6,021
Transistor based Security Alarm 6,005
LDR Based Automatic Lamp 5,848
Tone generator Circuit Diagram 5,702
CD4049 Based LED torch 5,637
Parked Vehicle Indicator 5,606
Humidity Detector Circuit 5,576
Non inverting amplifier 5,520
Understanding NOR Gate (CD4001) 5,469
Cell Phone Based Multiple Device Controller 5,441
Automatic Washroom Light Controller 5,433
LED Lamp Using CA3140 IC 5,346
Darkness Detector Alarm 5,321
Audio Amplifier using Opam 5,302
Electronic Code Locking System 5,267
Coin Toss/Flip Simulator Circuit 5,255
Multi Color Lighting 5,248
Voltage Doubler Circuit Using IC 4049 5,224
Exhaust Fan Circuit Diagram 5,218
Reminder Alarm 5,218
NE 555 Timer based Automatic Headlight 5,204
Timer Based Code Lock 5,183
Clock with LED pendulum with tick tock sound 5,134
Toggle flip flop using CD4013 5,060
IC555 based Multicolor LED Lamp Circuit Diagram 5,049
IR to RF Converter 5,009
Transistor Based Secret Bell 4,983
Night Lamp with Timer for Stairs 4,982
Variable Power Supply From Fixed Voltage Regulator 4,893
Conversion of NAND gate to Basic gates 4,890
Secure room access system 4,851
CD 4060IC based Message Display Circuit 4,809
UM3561 IC Based Security Alarm 4,794
Variable power supply and charger with emergency light 4,756
Inverting amplifier 4,735
Safety Alarm Circuit 4,710
Day and Night Indicator using IC 555 4,595
Sound generation in audio range 4,584
Obstacle Avoiding Robot 4,540
LED Based Stop Watch 4,444
Electronic Lock using Switches 4,414
CD 4013 based Sound Sensing Module 4,411
Fading LEDs 4,403
Display System used in Restaurant 4,396
Number Guessing Game 4,361
Car Reverse Horn 4,361
Timer Circuit using IC 4026 4,306
Flip Flop based Staircase Switch 4,281
CD 4027 Based Emergency Lighting System 4,243
Suitcase Security Alarm 4,214
CD 4013 Based Two Way Switch 4,201
Polarity cum Continuity Tester 4,185
Window and Door Guard with Light Sensor 4,124
LED Based Pendulum Circuit 4,120
Curtain Opener Circuit 4,099
Porch Light (Auto Turn Off Light) Circuit Diagram 4,092
Multitone Generator Circuit 4,089
Classroom Mic 4,060
Hearing Aid 3,948
Remote Tester Circuit 3,943
Automatic Power OFF timer for CD player 3,942
CD 4060 Based Security Alarm 3,875
PC Temperature Controller 3,851
8 Player Quiz Buzzer 3,809
Multi-Utility Flashing Light 3,775
Toggle switch using CD4017 3,739
Intruder Alarm 3,729
Electronic Thermometer for Beverage Temperature Measurement 3,556
Coin Toss Circuit on 7 Segment Display 3,399
Inverting amplifier with signal feedback 3,330
Multi Sound Buzzer 3,261
Reaction Timer Game 3,236
Crossing Light Indicator 3,223
Conversion of NOR gate to Basic gates 3,213
NOR Gate as SR Flip Flop 3,195
NAND Gate as SR Flip Flop 3,167
Sound Scanner Circuit 3,116
Multipurpose Timer With Musical Alarm 3,115
Notepad Lamp 3,075
CD4001 IC based Lighting System 3,035
"Hit the Target" Game 3,003
Pre Set Off Timer 2,864
Spell Effect Sign Display Circuit 2,801
Simple RPM Counter using IC 555 2,797
Electronic Number Game 2,739
Amplifier for Musical ICs 2,384
Direction Pointer 2,159
Simple Stepper Motor Driver using 555 Timer IC 2,096
Circuit Diagram to Automatically Hibernate your PC 2,053
Logic State Indicator 1,968
DIY: Make Remote Operated Light Fountain 1,615
Auto and Manual Pulse Generator 1,553
Simple 2 Digit Auto-Manual Counter 1,427
FSK Modulators using IC 555 1,356
2-Digit Object Counter 1,299
Zero Cross Detector (ZCD) Circuit 1,201
DIY: LASER Based Pulse Transmitter and Receiver 1,198
DIY : Short Range Optical Pulse Transmitter and Receiver 944
ASK Modulator using 555 Timer IC 609
Waveform Generator using LM741 521
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