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RF based Wireless Remote Control 137,203
Wireless motor control through RF 66,613
Infrared (IR) sensor 56,919
Automatic night lamp 56,789
Traffic light signal 32,899
DTMF Decoder 30,324
Relay activation using TSOP 1738 29,298
Light sensor using photodiode 28,738
Water level controller cum indicator circuit diagram 28,627
Touch switch 26,009
Working of light dependent resistor 25,284
Audio amplifier 22,860
Music (Data) transfer by IR by amplification 21,981
Single switch motor on/off.. Clockwise/anticlockwise 21,549
USB Mobile Charger Circuit Diagram 21,030
Intruder alarm / Burglar alarm based Home Security System 20,959
Fire alarm 20,579
Liquid level Alarm 20,055
Color distinguished using LDR/Color sensor using LDR 18,087
Variable power supply 17,034
Generating time delay with 555 IC 15,698
RF based Intruder Alarm 15,449
Darkness detector 15,417
Shadow Alarm using LDR 14,884
H-bridge using transistor 14,595
Automatic light/dark indicator 14,410
Water Sensor Circuit 13,592
RF based Fire Alarm (Overheat Alarm) 13,326
Power failure alarm 12,901
2 in 1 Doorbell 12,456
Music (Data) transfer by IR 11,977
555 Timer As Amplifier 11,052
Water Tank Overflow Alarm 10,491
Remote Control For Home Appliances 10,489
Remote Controlled Toy Car 10,458
Night Lamp using 555 10,325
2-1 Quiz Buzzer 10,210
Light detector 10,137
Light dependent frequency variation using LDR 10,041
Long range IR 9,840
Voltage Doubler Circuit Using IC555 9,674
Wireless Switch Circuit Diagram 9,478
Magic Eye Circuit Using 4049 IC 8,954
Fixed voltage power supply 8,907
Relay control by sound 8,758
Seismic sensor 8,651
555 Timer IC Tester 8,648
Water level indicator with display 8,580
Inverting amplifier using 741 8,322
Opamp as comparator 8,239
9-Way Clap Switch Circuit Diagram 8,211
Piezo sensor as input 7,929
Low pass filter 7,853
Electronic Letter Box 7,725
Bathroom Light Off Timer 7,720
Transistor Tester Circuit Diagram 7,558
Full range centigrade temperature sensor 7,541
Overheat/Overcooling circuit breaker 7,487
Transistor as audio amplifier 7,380
Electronic Dice Circuit 7,154
Dancing LED's 7,147
Touch Switch Circuit using 555 Timer 7,121
Astable mode by NAND gate 6,994
Bi Color LED 6,965
Simple AC to DC converter using bridge rectifier 6,962
Led Flasher Circuit 6,672
Active high trigger for 555 in monostable mode 6,603
Relay control through mic 6,536
BCD to 7 Segment display Circuit 6,389
Differential amplifier 6,249
High Pass Filter Circuit 6,069
Timer Circuit using IC CD 4060 6,017
Vehicle Indicator Circuit 5,931
Metronome 5,910
Relay operation using Darlington Pair 5,829
NAND gate monostable 5,496
Sound Operated LED 5,325
Electronic Code Lock Circuit 5,322
Electronic alarm for cash box, lockers 5,299
Electronic Timer Circuit 5,237
IC 555 Based Message Display Circuit 5,145
Voltage boost by using a resistor with 78XX 5,085
NOT gate monostable 5,041
Security Alarm for Doors, Almirah, cupboards using Opam 5,014
Sound Generation using 555 4,908
90 Second Timer 4,903
Sound Operated Switch 4,899
Negative supply using 555 IC 4,884
Periodically Turning On & Off Mosquito Repellent Circuit Diagram 4,793
Vehicle Indicator 4,740
Automatic Wash Basin Tap Controller 4,632
Piezo sensor as output 4,550
Refrigerator Door Alarm 4,418
Tone generator Circuit Diagram 4,290
Non inverting amplifier 4,273
Audio Amplifier using Opam 4,046
Multi Color Lighting 3,958
4 Player Quiz Buzzer 3,945
Luggage Security Alarm 3,944
Coin Toss/Flip Simulator Circuit 3,832
Understanding Decade Counter CD4017 3,765
Security System 3,765
CD 4060IC based Message Display Circuit 3,750
Voltage Doubler Circuit Using IC 4049 3,738
Inverting amplifier 3,715
Sound generation in audio range 3,672
Night Lamp with Timer for Stairs 3,653
Electronic Circuit: Digital Stopwatch 3,644
CD4049 Based LED torch 3,629
LED Lamp Using CA3140 IC 3,481
Random Number Generator Using 7 Segment Display 3,345
Parked Vehicle Indicator 3,310
Transistor Based Secret Bell 3,310
Secure room access system 3,269
Understanding JK flip flop using CD4027 3,193
CD 4013 based Sound Sensing Module 3,148
Reminder Alarm 3,109
NE 555 Timer based Automatic Headlight 3,090
Darkness Detector Alarm 3,084
Toggle flip flop using CD4013 3,072
Understanding NOR Gate (CD4001) 3,019
Variable power supply and charger with emergency light 2,967
Conversion of NAND gate to Basic gates 2,950
Electronic Door Bell 2,938
Battery Level Indicator 2,833
Interfacing 4026 with 7 segment display 2,813
Display System used in Restaurant 2,810
Automatic Power OFF timer for CD player 2,800
Timer Based Code Lock 2,786
Multi-Utility Flashing Light 2,751
Water Level Indicator with Display 2,751
Flip Flop based Staircase Switch 2,678
Safety Alarm Circuit 2,655
Inverting amplifier with signal feedback 2,650
Variable Power Supply From Fixed Voltage Regulator 2,631
CD 4013 Based Two Way Switch 2,589
IC555 based Multicolor LED Lamp Circuit Diagram 2,580
LED Based Pendulum Circuit 2,573
Fading LEDs 2,553
Electronic Code Locking System 2,520
Number Guessing Game 2,462
CD 4027 Based Emergency Lighting System 2,461
Multitone Generator Circuit 2,398
UM3561 IC Based Security Alarm 2,297
CD 4060 Based Security Alarm 2,267
Remote Tester Circuit 2,261
Two Way Intercom 2,246
Polarity cum Continuity Tester 2,244
Suitcase Security Alarm 2,168
Conversion of NOR gate to Basic gates 2,124
Magic Eye using 555 Timer IC 2,116
Intruder Alarm 2,100
Transistor based Security Alarm 2,080
Clock with LED pendulum with tick tock sound 2,058
CD4001 IC based Lighting System 2,044
Timer Circuit using IC 4026 1,980
NAND Gate as SR Flip Flop 1,976
Automatic Fan Speed Regulator 1,905
Exhaust Fan Circuit Diagram 1,889
Porch Light (Auto Turn Off Light) Circuit Diagram 1,876
Curtain Opener Circuit 1,847
PC Temperature Controller 1,829
Car Reverse Horn 1,756
NOR Gate as SR Flip Flop 1,748
Electronic Thermometer for Beverage Temperature Measurement 1,727
Toggle switch using CD4017 1,722
Remote Control for Devices using Cell Phone 1,719
Humidity Detector Circuit 1,715
Multipurpose Timer With Musical Alarm 1,631
Spell Effect Sign Display Circuit 1,547
Pre Set Off Timer 1,373
Notepad Lamp 1,370
LDR Based Automatic Lamp 1,341
Soil Moisture Detector 1,302
Electronic Lock using Switches 1,242
Line Following Robot 1,196
Automatic Washroom Light Controller 1,185
"Hit the Target" Game 1,169
8 Player Quiz Buzzer 1,111
LED Based Stop Watch 1,108
Reaction Timer Game 1,069
Crossing Light Indicator 1,060
Electronic Number Game 1,009
Amplifier for Musical ICs 967
Sound Scanner Circuit 871
Classroom Mic 866
Multi Sound Buzzer 827
Cell Phone Based Multiple Device Controller 712
Direction Pointer 702
Logic State Indicator 608
Window and Door Guard with Light Sensor 447
Coin Toss Circuit on 7 Segment Display 416
Circuit Diagram to Automatically Hibernate your PC 376
Hearing Aid 337
Obstacle Avoiding Robot 205
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