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RF based Wireless Remote Control 178,574
Infrared (IR) sensor 90,081
Wireless motor control through RF 87,051
Automatic night lamp 69,914
Display System used in Restaurant 63,449
Darkness Detector Alarm 59,895
Piezo sensor as output 55,852
Traffic light signal 47,409
USB Mobile Charger Circuit Diagram 43,166
DTMF Decoder 40,869
Water level controller cum indicator circuit diagram 40,708
Light sensor using photodiode 39,414
Remote Control For Home Appliances 37,200
Working of light dependent resistor 36,416
Relay activation using TSOP 1738 35,340
Touch switch 33,088
Audio amplifier 32,337
Remote Controlled Toy Car 31,710
Fire alarm 31,550
Intruder alarm / Burglar alarm based Home Security System 29,787
Single switch motor on/off.. Clockwise/anticlockwise 27,535
Music (Data) transfer by IR by amplification 25,720
Color distinguished using LDR/Color sensor using LDR 24,622
Liquid level Alarm 24,396
Darkness detector 24,129
Water Sensor Circuit 23,534
Shadow Alarm using LDR 22,843
Variable power supply 21,963
Generating time delay with 555 IC 21,337
H-bridge using transistor 21,269
Wireless Switch Circuit Diagram 21,119
Automatic light/dark indicator 20,270
Water Tank Overflow Alarm 20,189
RF based Intruder Alarm 19,189
9-Way Clap Switch Circuit Diagram 18,995
Power failure alarm 18,325
Night Lamp using 555 17,821
BCD to 7 Segment display Circuit 17,750
RF based Fire Alarm (Overheat Alarm) 17,496
Magic Eye Circuit Using 4049 IC 17,462
555 Timer As Amplifier 17,225
Water level indicator with display 17,015
Dancing LED's 16,892
Automatic Wash Basin Tap Controller 16,679
2 in 1 Doorbell 16,645
Bathroom Light Off Timer 16,245
Long range IR 16,063
Music (Data) transfer by IR 16,008
Light detector 15,722
Voltage Doubler Circuit Using IC555 15,645
2-1 Quiz Buzzer 15,609
Remote Control for Devices using Cell Phone 15,470
555 Timer IC Tester 15,306
Electronic Letter Box 15,298
Understanding Decade Counter CD4017 13,860
Simple AC to DC converter using bridge rectifier 13,773
Battery Level Indicator 13,690
Timer Circuit using IC CD 4060 13,303
Piezo sensor as input 13,160
Light dependent frequency variation using LDR 13,001
Transistor Tester Circuit Diagram 12,878
Fixed voltage power supply 12,778
Electronic Dice Circuit 12,770
Transistor as audio amplifier 12,650
Automatic Fan Speed Regulator 12,570
Opamp as comparator 12,545
Seismic sensor 12,395
Soil Moisture Detector 12,302
Low pass filter 12,222
Touch Switch Circuit using 555 Timer 12,017
Inverting amplifier using 741 11,943
Electronic Code Lock Circuit 11,876
Two Way Intercom 11,665
Relay control by sound 11,636
Line Following Robot 11,129
Full range centigrade temperature sensor 11,077
Electronic Circuit: Digital Stopwatch 10,943
Bi Color LED 10,870
Magic Eye using 555 Timer IC 10,829
Sound Operated Switch 10,753
Led Flasher Circuit 10,728
Overheat/Overcooling circuit breaker 10,689
Understanding JK flip flop using CD4027 10,434
Automatic Washroom Light Controller 10,416
Electronic Door Bell 10,292
Cell Phone Based Multiple Device Controller 10,262
LDR Based Automatic Lamp 10,249
Day and Night Indicator using IC 555 10,230
Sound Operated LED 10,212
Electronic Timer Circuit 10,185
Astable mode by NAND gate 10,082
Water Level Indicator with Display 10,063
Transistor based Security Alarm 10,060
Active high trigger for 555 in monostable mode 10,011
Vehicle Indicator Circuit 9,986
High Pass Filter Circuit 9,940
IC 555 Based Message Display Circuit 9,717
Relay operation using Darlington Pair 9,534
Interfacing 4026 with 7 segment display 9,456
Security Alarm for Doors, Almirah, cupboards using Opam 9,266
Metronome 9,157
Relay control through mic 9,133
Simple RPM Counter using IC 555 9,128
Differential amplifier 8,902
Luggage Security Alarm 8,894
Random Number Generator Using 7 Segment Display 8,890
Sound Generation using 555 8,840
Smart DC fan 8,801
Humidity Detector Circuit 8,555
Exhaust Fan Circuit Diagram 8,525
4 Player Quiz Buzzer 8,500
Voltage boost by using a resistor with 78XX 8,474
Understanding NOR Gate (CD4001) 8,349
NAND gate monostable 8,254
Electronic alarm for cash box, lockers 8,243
Refrigerator Door Alarm 8,139
Hearing Aid 8,127
Electronic Mosquito Repellent Circuit 8,043
90 Second Timer 8,023
Clock with LED pendulum with tick tock sound 7,857
Security System 7,853
Obstacle Avoiding Robot 7,841
Periodically Turning On & Off Mosquito Repellent Circuit Diagram 7,825
Timer Based Code Lock 7,787
Vehicle Indicator 7,763
Parked Vehicle Indicator 7,759
Electronic Code Locking System 7,626
Classroom Mic 7,618
IR to RF Converter 7,366
LED Based Stop Watch 7,328
Negative supply using 555 IC 7,213
Reminder Alarm 7,187
CD4049 Based LED torch 7,119
NOT gate monostable 7,095
LED Lamp Using CA3140 IC 7,039
Toggle flip flop using CD4013 7,027
NE 555 Timer based Automatic Headlight 7,006
IC555 based Multicolor LED Lamp Circuit Diagram 6,937
Variable power supply and charger with emergency light 6,900
Tone generator Circuit Diagram 6,875
Conversion of NAND gate to Basic gates 6,810
8 Player Quiz Buzzer 6,799
Coin Toss/Flip Simulator Circuit 6,730
UM3561 IC Based Security Alarm 6,715
Curtain Opener Circuit 6,675
Car Reverse Horn 6,588
Voltage Doubler Circuit Using IC 4049 6,474
Variable Power Supply From Fixed Voltage Regulator 6,447
Electronic Lock using Switches 6,417
Multi Color Lighting 6,400
Number Guessing Game 6,357
Suitcase Security Alarm 6,354
Non inverting amplifier 6,311
Audio Amplifier using Opam 6,275
Secure room access system 6,266
Transistor Based Secret Bell 6,254
Safety Alarm Circuit 6,225
Window and Door Guard with Light Sensor 6,210
DIY – Homemade Melody Door Bell 6,198
Timer Circuit using IC 4026 6,190
CD 4027 Based Emergency Lighting System 6,155
Night Lamp with Timer for Stairs 6,009
Fading LEDs 6,006
Simple Stepper Motor Driver using 555 Timer IC 6,004
PC Temperature Controller 5,953
Porch Light (Auto Turn Off Light) Circuit Diagram 5,820
Polarity cum Continuity Tester 5,750
Toggle switch using CD4017 5,711
CD 4013 Based Two Way Switch 5,673
Reaction Timer Game 5,664
Inverting amplifier 5,647
Flip Flop based Staircase Switch 5,645
CD 4060IC based Message Display Circuit 5,635
CD 4013 based Sound Sensing Module 5,617
Multitone Generator Circuit 5,610
LED Based Pendulum Circuit 5,473
Crossing Light Indicator 5,449
Sound generation in audio range 5,408
Multi Sound Buzzer 5,407
Remote Tester Circuit 5,396
Intruder Alarm 5,354
Sound Scanner Circuit 5,239
CD 4060 Based Security Alarm 5,225
Coin Toss Circuit on 7 Segment Display 5,114
Electronic Thermometer for Beverage Temperature Measurement 5,081
Automatic Power OFF timer for CD player 5,047
"Hit the Target" Game 4,739
Notepad Lamp 4,683
FSK Modulators using IC 555 4,543
Multi-Utility Flashing Light 4,489
NOR Gate as SR Flip Flop 4,310
NAND Gate as SR Flip Flop 4,237
Conversion of NOR gate to Basic gates 4,229
Multipurpose Timer With Musical Alarm 4,185
CD4001 IC based Lighting System 4,089
Electronic Number Game 4,047
Pre Set Off Timer 4,039
Spell Effect Sign Display Circuit 3,995
Inverting amplifier with signal feedback 3,979
2-Digit Object Counter 3,867
Amplifier for Musical ICs 3,709
DIY: LASER Based Pulse Transmitter and Receiver 3,701
ASK Modulator using 555 Timer IC 3,672
Simple 2 Digit Auto-Manual Counter 3,665
Direction Pointer 3,348
Auto and Manual Pulse Generator 3,332
Circuit Diagram to Automatically Hibernate your PC 3,217
Logic State Indicator 3,133
DIY : Short Range Optical Pulse Transmitter and Receiver 2,990
Zero Cross Detector (ZCD) Circuit 2,901
DIY: Make Remote Operated Light Fountain 2,818
Waveform Generator using LM741 2,806

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