1. Automatic Light Fence Circuit with Alarm
  2. Oscilloscope using Capacitor ESR Meter
  3. Charge Pump Circuit – Getting Higher Voltage from Low Voltage Source
  4. Simple Curve Tracer Circuit: Tracing the Curve for Resistor, Diode and Transistor
  5. Simple H-Bridge Motor Driver Circuit Using MOSFET
  6. Frequency to Voltage Converter Circuit
  7. Missing Pulse Detector Circuit
  8. Sawtooth Waveform Generator Circuit
  9. 24V Flasher Circuit
  10. Snubber Circuit Using Thyristor Switching
  11. Frequency Divider Circuit Using 555 Timer and CD4017
  12. Magnetic Door Alarm Circuit Using Hall Sensor
  13. LED Roulette Circuit using 555 timer IC
  14. Wireless DC Motor Speed ​​Control Using IR Remote and 555 Timer IC
  15. Ding Dong Sound Generator Door Bell Circuit Using 555 Timer
  16. Fridge Door Alarm Circuit using 555 and LDR
  17. School / College Quiz Buzzer Circuit Using 555 Timer IC
  18. Simple Time Delay Circuit Using 555 Timer
  19. Panic Alarm Button Circuit Using 555 Timer IC
  20. Brake Failure Indicator Circuit
  21. Generate Pulse Width Modulation (PWM) Signal Using 555 Timer IC
  22. Bike / Car Turning Signal Indicator Circuit Using 555 Timer IC
  23. LED Strobe Light Circuit
  24. Simple Digital Voltmeter Circuit with PCB using ICL7107
  25. 3X3X3 LED Cube using 555 Timer and CD4020 IC
  26. 555 Timer Based Electronic Code Lock Circuit
  27. Automatic Rain Sensing Wiper Circuit Using 555 Timer IC
  28. IR Detector Circuit Using 555 Timer IC
  29. Simple Audio Amplifier Using 555 Timer IC
  30. Laser Security Alarm Circuit
  31. DIY Piano
  32. Clap On Clap Off Switch
  33. IR Based Security Alarm
  34. Voltage Doubler Circuit
  35. 555 Timer Bistable Multivibrator Circuit
  36. 555 Timer Astable Multivibrator Circuit
  37. 555 Timer Monostable Multivibrator Circuit
  38. 2 Digit Object / Product Counter
  39. Digital Stopwatch
  40. Toggle Switch
  41. Digital Dice Circuit
  42. 7 Segment Counter using IC 555 and IC 4026
  43. Dancing LEDs
  44. H-Bridge Circuit
  45. LED Chaser Circuit
  46. IR Transmitter and Receiver
  47. Clock with LED Pendulum and Tick Tock Sound
  48. Electronic Mosquito Repellent Circuit
  49. Heart Shaped Serial LED Flasher
  50. 1 Minute Timer Circuit
  51. Rain Alarm
  52. Fire Alarm Using Thermistor
  53. Negative Voltage Generator
  54. Door Bell using IC 555
  55. Servo Motor Tester Circuit
  56. Simple Fading LED Light
  57. Four Way Traffic Lights Circuit Using 555 Timer IC
  58. TV Remote Control Jammer Circuit
  59. Simple Continuity Tester Circuit Using 555 Timer IC
  60. One Bit Memory Cell
  61. Transistor Tester using 555 Timer IC
  62. Stepper Motor Driver Circuit
  63. Simple Metal Detector Circuit
  64. Simple LDR Circuit
  65. DC Motor Speed ​​Control Circuit
  66. Simple Flashing LED using 555 Timer IC
  67. 1 Watt LED Dimmer Circuit
  68. Simple Touch Switch Circuit Using 555 Timer IC
  69. Dark Detector Using LDR and 555 Timer IC