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RF based Wireless Remote Control 165,360
Wireless motor control through RF 79,059
Infrared (IR) sensor 76,679
Automatic night lamp 65,639
Traffic light signal 42,938
DTMF Decoder 37,248
Water level controller cum indicator circuit diagram 37,037
Light sensor using photodiode 35,890
USB Mobile Charger Circuit Diagram 34,780
Working of light dependent resistor 33,569
Relay activation using TSOP 1738 33,526
Touch switch 30,702
Audio amplifier 28,543
Fire alarm 27,791
Intruder alarm / Burglar alarm based Home Security System 27,239
Remote Control For Home Appliances 26,873
Single switch motor on/off.. Clockwise/anticlockwise 25,339
Remote Controlled Toy Car 25,249
Music (Data) transfer by IR by amplification 24,560
Liquid level Alarm 22,844
Color distinguished using LDR/Color sensor using LDR 21,801
Darkness detector 21,799
Variable power supply 20,106
Shadow Alarm using LDR 20,076
Water Sensor Circuit 19,956
Generating time delay with 555 IC 19,613
H-bridge using transistor 18,984
Automatic light/dark indicator 18,505
Water Tank Overflow Alarm 18,061
RF based Intruder Alarm 17,677
Wireless Switch Circuit Diagram 16,976
Power failure alarm 16,385
RF based Fire Alarm (Overheat Alarm) 15,672
Night Lamp using 555 15,553
9-Way Clap Switch Circuit Diagram 15,498
2 in 1 Doorbell 15,115
555 Timer As Amplifier 15,094
Water level indicator with display 14,822
Music (Data) transfer by IR 14,306
Magic Eye Circuit Using 4049 IC 14,065
Dancing LED's 14,029
Light detector 13,962
Long range IR 13,724
2-1 Quiz Buzzer 13,682
BCD to 7 Segment display Circuit 13,649
Voltage Doubler Circuit Using IC555 13,567
555 Timer IC Tester 13,104
Bathroom Light Off Timer 12,937
Electronic Letter Box 12,792
Light dependent frequency variation using LDR 11,953
Piezo sensor as input 11,293
Fixed voltage power supply 11,275
Timer Circuit using IC CD 4060 11,204
Transistor as audio amplifier 11,166
Inverting amplifier using 741 11,113
Seismic sensor 11,073
Transistor Tester Circuit Diagram 10,953
Opamp as comparator 10,804
Automatic Wash Basin Tap Controller 10,776
Simple AC to DC converter using bridge rectifier 10,718
Low pass filter 10,707
Electronic Dice Circuit 10,610
Relay control by sound 10,606
Touch Switch Circuit using 555 Timer 10,184
Full range centigrade temperature sensor 9,904
Electronic Code Lock Circuit 9,841
Remote Control for Devices using Cell Phone 9,799
Understanding Decade Counter CD4017 9,641
Bi Color LED 9,496
Battery Level Indicator 9,463
Led Flasher Circuit 9,417
Overheat/Overcooling circuit breaker 9,275
Astable mode by NAND gate 9,005
Automatic Fan Speed Regulator 8,909
Active high trigger for 555 in monostable mode 8,763
Vehicle Indicator Circuit 8,615
Sound Operated LED 8,589
Sound Operated Switch 8,571
High Pass Filter Circuit 8,537
Relay operation using Darlington Pair 8,344
Electronic Timer Circuit 8,267
Relay control through mic 8,227
Metronome 8,122
Magic Eye using 555 Timer IC 8,053
IC 555 Based Message Display Circuit 7,982
Differential amplifier 7,938
Soil Moisture Detector 7,840
Electronic Door Bell 7,836
Electronic Circuit: Digital Stopwatch 7,703
Voltage boost by using a resistor with 78XX 7,634
Understanding JK flip flop using CD4027 7,625
Security Alarm for Doors, Almirah, cupboards using Opam 7,616
Day and Night Indicator using IC 555 7,551
Sound Generation using 555 7,513
NAND gate monostable 7,418
Line Following Robot 7,332
Water Level Indicator with Display 7,313
Electronic alarm for cash box, lockers 7,241
Two Way Intercom 7,144
Luggage Security Alarm 6,999
Random Number Generator Using 7 Segment Display 6,991
Interfacing 4026 with 7 segment display 6,862
Transistor based Security Alarm 6,755
90 Second Timer 6,753
Refrigerator Door Alarm 6,721
LDR Based Automatic Lamp 6,715
Vehicle Indicator 6,706
Periodically Turning On & Off Mosquito Repellent Circuit Diagram 6,662
4 Player Quiz Buzzer 6,659
Security System 6,545
Negative supply using 555 IC 6,447
NOT gate monostable 6,416
Automatic Washroom Light Controller 6,399
Piezo sensor as output 6,330
Humidity Detector Circuit 6,128
Cell Phone Based Multiple Device Controller 6,124
Understanding NOR Gate (CD4001) 6,100
Parked Vehicle Indicator 6,091
CD4049 Based LED torch 6,004
Tone generator Circuit Diagram 5,986
Darkness Detector Alarm 5,828
Exhaust Fan Circuit Diagram 5,811
LED Lamp Using CA3140 IC 5,768
Non inverting amplifier 5,725
Electronic Code Locking System 5,723
Clock with LED pendulum with tick tock sound 5,705
Timer Based Code Lock 5,629
NE 555 Timer based Automatic Headlight 5,596
IC555 based Multicolor LED Lamp Circuit Diagram 5,583
Reminder Alarm 5,570
Audio Amplifier using Opam 5,516
Voltage Doubler Circuit Using IC 4049 5,515
Coin Toss/Flip Simulator Circuit 5,513
Multi Color Lighting 5,472
IR to RF Converter 5,469
Toggle flip flop using CD4013 5,465
Conversion of NAND gate to Basic gates 5,261
Transistor Based Secret Bell 5,254
Night Lamp with Timer for Stairs 5,234
Variable Power Supply From Fixed Voltage Regulator 5,192
UM3561 IC Based Security Alarm 5,178
Obstacle Avoiding Robot 5,145
Variable power supply and charger with emergency light 5,143
Secure room access system 5,123
Safety Alarm Circuit 5,092
CD 4060IC based Message Display Circuit 5,033
LED Based Stop Watch 4,944
Electronic Lock using Switches 4,892
Inverting amplifier 4,890
Car Reverse Horn 4,853
Fading LEDs 4,786
Sound generation in audio range 4,774
Number Guessing Game 4,760
Classroom Mic 4,703
Timer Circuit using IC 4026 4,700
Display System used in Restaurant 4,696
Suitcase Security Alarm 4,669
Window and Door Guard with Light Sensor 4,659
Hearing Aid 4,657
CD 4013 based Sound Sensing Module 4,635
Curtain Opener Circuit 4,606
CD 4027 Based Emergency Lighting System 4,593
CD 4013 Based Two Way Switch 4,550
Flip Flop based Staircase Switch 4,531
Polarity cum Continuity Tester 4,501
Porch Light (Auto Turn Off Light) Circuit Diagram 4,486
Multitone Generator Circuit 4,444
8 Player Quiz Buzzer 4,439
LED Based Pendulum Circuit 4,438
Remote Tester Circuit 4,261
PC Temperature Controller 4,228
CD 4060 Based Security Alarm 4,193
Automatic Power OFF timer for CD player 4,155
Toggle switch using CD4017 4,108
Intruder Alarm 4,056
Simple RPM Counter using IC 555 3,981
Multi-Utility Flashing Light 3,948
Electronic Thermometer for Beverage Temperature Measurement 3,841
Multi Sound Buzzer 3,763
Coin Toss Circuit on 7 Segment Display 3,762
Crossing Light Indicator 3,665
Reaction Timer Game 3,620
Sound Scanner Circuit 3,508
Inverting amplifier with signal feedback 3,452
NOR Gate as SR Flip Flop 3,430
Notepad Lamp 3,413
Multipurpose Timer With Musical Alarm 3,400
Conversion of NOR gate to Basic gates 3,390
NAND Gate as SR Flip Flop 3,359
"Hit the Target" Game 3,336
CD4001 IC based Lighting System 3,213
Pre Set Off Timer 3,120
Spell Effect Sign Display Circuit 3,043
Electronic Number Game 2,976
Amplifier for Musical ICs 2,599
Simple Stepper Motor Driver using 555 Timer IC 2,575
Direction Pointer 2,394
Circuit Diagram to Automatically Hibernate your PC 2,307
Logic State Indicator 2,174
DIY: Make Remote Operated Light Fountain 2,037
FSK Modulators using IC 555 1,959
Auto and Manual Pulse Generator 1,917
Simple 2 Digit Auto-Manual Counter 1,862
DIY: LASER Based Pulse Transmitter and Receiver 1,794
2-Digit Object Counter 1,764
Zero Cross Detector (ZCD) Circuit 1,541
DIY : Short Range Optical Pulse Transmitter and Receiver 1,277
ASK Modulator using 555 Timer IC 1,261
Waveform Generator using LM741 784
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