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RF based Wireless Remote Control 182,702
Infrared (IR) sensor 93,149
Wireless motor control through RF 89,233
Darkness Detector Alarm 80,024
Display System used in Restaurant 79,614
Automatic night lamp 71,326
Piezo sensor as output 63,785
Traffic light signal 48,778
USB Mobile Charger Circuit Diagram 45,734
Water level controller cum indicator circuit diagram 41,879
DTMF Decoder 41,840
Light sensor using photodiode 40,385
Remote Control For Home Appliances 40,384
Working of light dependent resistor 37,236
Relay activation using TSOP 1738 35,936
Touch switch 33,780
Remote Controlled Toy Car 33,674
Audio amplifier 33,290
Fire alarm 32,570
Intruder alarm / Burglar alarm based Home Security System 30,582
Single switch motor on/off.. Clockwise/anticlockwise 28,123
Music (Data) transfer by IR by amplification 26,159
Color distinguished using LDR/Color sensor using LDR 25,232
Darkness detector 24,957
Liquid level Alarm 24,780
Water Sensor Circuit 24,638
Shadow Alarm using LDR 23,643
Wireless Switch Circuit Diagram 22,697
Variable power supply 22,554
Generating time delay with 555 IC 21,876
H-bridge using transistor 21,852
Water Tank Overflow Alarm 21,266
Automatic light/dark indicator 20,842
9-Way Clap Switch Circuit Diagram 20,283
RF based Intruder Alarm 19,531
Power failure alarm 18,915
BCD to 7 Segment display Circuit 18,846
Night Lamp using 555 18,613
Magic Eye Circuit Using 4049 IC 18,492
Automatic Wash Basin Tap Controller 17,983
Dancing LED's 17,921
RF based Fire Alarm (Overheat Alarm) 17,909
555 Timer As Amplifier 17,840
Water level indicator with display 17,647
Bathroom Light Off Timer 17,212
2 in 1 Doorbell 17,052
Remote Control for Devices using Cell Phone 16,823
Long range IR 16,677
Music (Data) transfer by IR 16,391
Light detector 16,336
Voltage Doubler Circuit Using IC555 16,282
Electronic Letter Box 16,264
2-1 Quiz Buzzer 16,252
555 Timer IC Tester 15,941
Understanding Decade Counter CD4017 14,905
Battery Level Indicator 14,808
Simple AC to DC converter using bridge rectifier 14,645
Timer Circuit using IC CD 4060 13,981
Soil Moisture Detector 13,947
Piezo sensor as input 13,789
Automatic Fan Speed Regulator 13,695
Transistor Tester Circuit Diagram 13,415
Electronic Dice Circuit 13,328
Light dependent frequency variation using LDR 13,307
Transistor as audio amplifier 13,212
Fixed voltage power supply 13,170
Opamp as comparator 12,936
Seismic sensor 12,865
Low pass filter 12,663
Touch Switch Circuit using 555 Timer 12,585
Two Way Intercom 12,538
Electronic Code Lock Circuit 12,453
Inverting amplifier using 741 12,170
Line Following Robot 12,136
Relay control by sound 11,943
Magic Eye using 555 Timer IC 11,774
Electronic Circuit: Digital Stopwatch 11,703
Automatic Washroom Light Controller 11,650
Day and Night Indicator using IC 555 11,527
Full range centigrade temperature sensor 11,372
Bi Color LED 11,324
Sound Operated Switch 11,301
LDR Based Automatic Lamp 11,286
Electronic Mosquito Repellent Circuit 11,271
Cell Phone Based Multiple Device Controller 11,153
Led Flasher Circuit 11,114
Understanding JK flip flop using CD4027 11,092
Overheat/Overcooling circuit breaker 10,986
Transistor based Security Alarm 10,909
Electronic Door Bell 10,862
Water Level Indicator with Display 10,750
Electronic Timer Circuit 10,717
Sound Operated LED 10,691
Vehicle Indicator Circuit 10,468
Active high trigger for 555 in monostable mode 10,350
Simple RPM Counter using IC 555 10,313
High Pass Filter Circuit 10,300
Astable mode by NAND gate 10,299
Smart DC fan 10,251
IC 555 Based Message Display Circuit 10,227
Interfacing 4026 with 7 segment display 10,195
Relay operation using Darlington Pair 9,882
Security Alarm for Doors, Almirah, cupboards using Opam 9,696
Metronome 9,534
Luggage Security Alarm 9,500
Random Number Generator Using 7 Segment Display 9,446
Exhaust Fan Circuit Diagram 9,407
Relay control through mic 9,373
Sound Generation using 555 9,288
Humidity Detector Circuit 9,212
Differential amplifier 9,161
Hearing Aid 8,980
4 Player Quiz Buzzer 8,955
Understanding NOR Gate (CD4001) 8,943
Voltage boost by using a resistor with 78XX 8,721
Obstacle Avoiding Robot 8,652
Refrigerator Door Alarm 8,571
Electronic alarm for cash box, lockers 8,565
NAND gate monostable 8,539
Classroom Mic 8,521
Clock with LED pendulum with tick tock sound 8,394
90 Second Timer 8,373
Timer Based Code Lock 8,341
Security System 8,206
Electronic Code Locking System 8,187
Parked Vehicle Indicator 8,184
Vehicle Indicator 8,154
Periodically Turning On & Off Mosquito Repellent Circuit Diagram 8,091
LED Based Stop Watch 8,036
IR to RF Converter 7,887
Reminder Alarm 7,659
NE 555 Timer based Automatic Headlight 7,475
Toggle flip flop using CD4013 7,470
Negative supply using 555 IC 7,456
8 Player Quiz Buzzer 7,431
CD4049 Based LED torch 7,425
LED Lamp Using CA3140 IC 7,424
IC555 based Multicolor LED Lamp Circuit Diagram 7,424
Conversion of NAND gate to Basic gates 7,378
Variable power supply and charger with emergency light 7,360
NOT gate monostable 7,277
Curtain Opener Circuit 7,173
Tone generator Circuit Diagram 7,147
Car Reverse Horn 7,081
UM3561 IC Based Security Alarm 7,074
Coin Toss/Flip Simulator Circuit 7,035
DIY – Homemade Melody Door Bell 7,010
Suitcase Security Alarm 6,978
Simple Stepper Motor Driver using 555 Timer IC 6,934
Number Guessing Game 6,906
Electronic Lock using Switches 6,886
Variable Power Supply From Fixed Voltage Regulator 6,833
Window and Door Guard with Light Sensor 6,721
Voltage Doubler Circuit Using IC 4049 6,715
Multi Color Lighting 6,635
Safety Alarm Circuit 6,611
Timer Circuit using IC 4026 6,580
Secure room access system 6,558
Transistor Based Secret Bell 6,519
Audio Amplifier using Opam 6,501
CD 4027 Based Emergency Lighting System 6,485
Non inverting amplifier 6,472
Fading LEDs 6,414
PC Temperature Controller 6,386
Night Lamp with Timer for Stairs 6,238
Porch Light (Auto Turn Off Light) Circuit Diagram 6,217
Polarity cum Continuity Tester 6,213
Reaction Timer Game 6,138
Toggle switch using CD4017 6,106
CD 4013 Based Two Way Switch 6,016
Flip Flop based Staircase Switch 5,967
Crossing Light Indicator 5,948
Multitone Generator Circuit 5,910
Inverting amplifier 5,842
CD 4013 based Sound Sensing Module 5,829
Multi Sound Buzzer 5,828
CD 4060IC based Message Display Circuit 5,827
LED Based Pendulum Circuit 5,787
Sound Scanner Circuit 5,758
Remote Tester Circuit 5,732
Intruder Alarm 5,681
Sound generation in audio range 5,575
CD 4060 Based Security Alarm 5,507
Coin Toss Circuit on 7 Segment Display 5,503
Electronic Thermometer for Beverage Temperature Measurement 5,383
FSK Modulators using IC 555 5,351
Automatic Power OFF timer for CD player 5,281
"Hit the Target" Game 5,130
Notepad Lamp 5,063
Multi-Utility Flashing Light 4,669
NOR Gate as SR Flip Flop 4,578
2-Digit Object Counter 4,510
Conversion of NOR gate to Basic gates 4,482
NAND Gate as SR Flip Flop 4,478
Multipurpose Timer With Musical Alarm 4,426
DIY: LASER Based Pulse Transmitter and Receiver 4,402
Pre Set Off Timer 4,352
Electronic Number Game 4,349
Spell Effect Sign Display Circuit 4,317
CD4001 IC based Lighting System 4,311
ASK Modulator using 555 Timer IC 4,283
Simple 2 Digit Auto-Manual Counter 4,171
Inverting amplifier with signal feedback 4,101
Amplifier for Musical ICs 3,997
Auto and Manual Pulse Generator 3,693
Direction Pointer 3,635
Circuit Diagram to Automatically Hibernate your PC 3,463
Logic State Indicator 3,391
Zero Cross Detector (ZCD) Circuit 3,356
DIY : Short Range Optical Pulse Transmitter and Receiver 3,335
DIY: Make Remote Operated Light Fountain 3,274
Waveform Generator using LM741 3,236

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