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RF based Wireless Remote Control 152,081
Wireless motor control through RF 73,438
Infrared (IR) sensor 67,420
Automatic night lamp 61,678
Traffic light signal 38,527
DTMF Decoder 34,641
Water level controller cum indicator circuit diagram 33,569
Light sensor using photodiode 32,706
Relay activation using TSOP 1738 31,699
Working of light dependent resistor 30,081
Touch switch 28,825
USB Mobile Charger Circuit Diagram 28,291
Audio amplifier 26,117
Intruder alarm / Burglar alarm based Home Security System 24,661
Fire alarm 24,545
Single switch motor on/off.. Clockwise/anticlockwise 23,837
Music (Data) transfer by IR by amplification 23,345
Liquid level Alarm 21,730
Color distinguished using LDR/Color sensor using LDR 20,343
Remote Control For Home Appliances 19,666
Darkness detector 18,978
Variable power supply 18,973
Remote Controlled Toy Car 18,796
Generating time delay with 555 IC 18,069
Shadow Alarm using LDR 17,808
Water Sensor Circuit 17,461
H-bridge using transistor 17,329
Automatic light/dark indicator 16,869
RF based Intruder Alarm 16,830
Power failure alarm 14,961
RF based Fire Alarm (Overheat Alarm) 14,737
Water Tank Overflow Alarm 14,474
Wireless Switch Circuit Diagram 14,167
2 in 1 Doorbell 14,061
555 Timer As Amplifier 13,426
Night Lamp using 555 13,411
Music (Data) transfer by IR 13,328
Light detector 12,465
Water level indicator with display 12,436
9-Way Clap Switch Circuit Diagram 12,344
2-1 Quiz Buzzer 12,248
Long range IR 12,028
Voltage Doubler Circuit Using IC555 11,878
Magic Eye Circuit Using 4049 IC 11,733
555 Timer IC Tester 11,173
Light dependent frequency variation using LDR 11,165
Dancing LED's 10,717
Bathroom Light Off Timer 10,691
Fixed voltage power supply 10,362
Electronic Letter Box 10,345
Inverting amplifier using 741 10,287
BCD to 7 Segment display Circuit 10,217
Seismic sensor 10,089
Relay control by sound 9,938
Piezo sensor as input 9,786
Opamp as comparator 9,779
Low pass filter 9,640
Transistor as audio amplifier 9,537
Transistor Tester Circuit Diagram 9,520
Simple AC to DC converter using bridge rectifier 9,059
Electronic Dice Circuit 9,036
Full range centigrade temperature sensor 8,966
Touch Switch Circuit using 555 Timer 8,868
Timer Circuit using IC CD 4060 8,726
Overheat/Overcooling circuit breaker 8,537
Bi Color LED 8,425
Led Flasher Circuit 8,238
Astable mode by NAND gate 8,206
Automatic Wash Basin Tap Controller 7,969
Active high trigger for 555 in monostable mode 7,940
Electronic Code Lock Circuit 7,635
Vehicle Indicator Circuit 7,553
Relay control through mic 7,545
High Pass Filter Circuit 7,539
Relay operation using Darlington Pair 7,334
Differential amplifier 7,299
Metronome 7,280
Understanding Decade Counter CD4017 7,259
Sound Operated LED 7,194
Sound Operated Switch 7,067
Electronic Timer Circuit 7,067
Remote Control for Devices using Cell Phone 7,062
Voltage boost by using a resistor with 78XX 6,985
Battery Level Indicator 6,843
IC 555 Based Message Display Circuit 6,797
NAND gate monostable 6,684
Security Alarm for Doors, Almirah, cupboards using Opam 6,593
Electronic alarm for cash box, lockers 6,492
Sound Generation using 555 6,371
Electronic Door Bell 6,339
90 Second Timer 5,986
Periodically Turning On & Off Mosquito Repellent Circuit Diagram 5,966
Vehicle Indicator 5,895
Electronic Circuit: Digital Stopwatch 5,872
Luggage Security Alarm 5,865
NOT gate monostable 5,856
Negative supply using 555 IC 5,849
Automatic Fan Speed Regulator 5,779
Refrigerator Door Alarm 5,711
Piezo sensor as output 5,597
4 Player Quiz Buzzer 5,544
Understanding JK flip flop using CD4027 5,510
Magic Eye using 555 Timer IC 5,464
Random Number Generator Using 7 Segment Display 5,417
Security System 5,411
Water Level Indicator with Display 5,371
Tone generator Circuit Diagram 5,260
Soil Moisture Detector 5,174
Non inverting amplifier 5,142
CD4049 Based LED torch 5,094
Parked Vehicle Indicator 5,036
Interfacing 4026 with 7 segment display 4,984
Two Way Intercom 4,966
Audio Amplifier using Opam 4,911
Multi Color Lighting 4,875
Line Following Robot 4,819
Coin Toss/Flip Simulator Circuit 4,800
Voltage Doubler Circuit Using IC 4049 4,790
LED Lamp Using CA3140 IC 4,738
Transistor based Security Alarm 4,677
Humidity Detector Circuit 4,638
Night Lamp with Timer for Stairs 4,638
Reminder Alarm 4,604
NE 555 Timer based Automatic Headlight 4,600
Darkness Detector Alarm 4,581
Understanding NOR Gate (CD4001) 4,542
Timer Based Code Lock 4,536
Transistor Based Secret Bell 4,474
CD 4060IC based Message Display Circuit 4,447
Inverting amplifier 4,431
Toggle flip flop using CD4013 4,418
LDR Based Automatic Lamp 4,418
Electronic Code Locking System 4,411
Secure room access system 4,410
Exhaust Fan Circuit Diagram 4,403
Sound generation in audio range 4,286
IC555 based Multicolor LED Lamp Circuit Diagram 4,261
Conversion of NAND gate to Basic gates 4,261
IR to RF Converter 4,257
Clock with LED pendulum with tick tock sound 4,220
Variable power supply and charger with emergency light 4,219
Automatic Washroom Light Controller 4,188
UM3561 IC Based Security Alarm 4,169
Variable Power Supply From Fixed Voltage Regulator 4,037
Safety Alarm Circuit 4,033
CD 4013 based Sound Sensing Module 4,029
Display System used in Restaurant 3,948
Fading LEDs 3,865
Flip Flop based Staircase Switch 3,840
Number Guessing Game 3,793
Obstacle Avoiding Robot 3,700
CD 4027 Based Emergency Lighting System 3,661
CD 4013 Based Two Way Switch 3,656
Cell Phone Based Multiple Device Controller 3,648
Suitcase Security Alarm 3,635
LED Based Pendulum Circuit 3,630
Timer Circuit using IC 4026 3,601
Automatic Power OFF timer for CD player 3,599
Car Reverse Horn 3,575
Multitone Generator Circuit 3,551
Polarity cum Continuity Tester 3,513
LED Based Stop Watch 3,493
Curtain Opener Circuit 3,493
Porch Light (Auto Turn Off Light) Circuit Diagram 3,468
Multi-Utility Flashing Light 3,460
Remote Tester Circuit 3,437
CD 4060 Based Security Alarm 3,347
PC Temperature Controller 3,305
Classroom Mic 3,267
Intruder Alarm 3,266
Window and Door Guard with Light Sensor 3,244
Inverting amplifier with signal feedback 3,121
Electronic Lock using Switches 3,102
Electronic Thermometer for Beverage Temperature Measurement 2,973
8 Player Quiz Buzzer 2,933
Toggle switch using CD4017 2,908
Conversion of NOR gate to Basic gates 2,873
Hearing Aid 2,847
Coin Toss Circuit on 7 Segment Display 2,808
NAND Gate as SR Flip Flop 2,807
CD4001 IC based Lighting System 2,705
Multipurpose Timer With Musical Alarm 2,696
NOR Gate as SR Flip Flop 2,692
Reaction Timer Game 2,580
Crossing Light Indicator 2,560
Notepad Lamp 2,532
"Hit the Target" Game 2,505
Multi Sound Buzzer 2,477
Pre Set Off Timer 2,468
Spell Effect Sign Display Circuit 2,467
Sound Scanner Circuit 2,440
Electronic Number Game 2,287
Amplifier for Musical ICs 2,052
Direction Pointer 1,783
Circuit Diagram to Automatically Hibernate your PC 1,633
Logic State Indicator 1,573
Simple Stepper Motor Driver using 555 Timer IC 1,372
Simple RPM Counter using IC 555 1,005
Auto and Manual Pulse Generator 985
Simple 2 Digit Auto-Manual Counter 796
Zero Cross Detector (ZCD) Circuit 700
2-Digit Object Counter 593
DIY : Short Range Optical Pulse Transmitter and Receiver 437
DIY: LASER Based Pulse Transmitter and Receiver 351
DIY: Make Remote Operated Light Fountain 295
FSK Modulators using IC 555 205
ASK Modulator using 555 Timer IC 169
Waveform Generator using LM741 129

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