Project Ideas

61. Infra red shadow detector
62. Temperature controller
63. Zener diode tester
64. Head phone amplifier
65. Magic Organ (light operated music generation)
66. Telephone tapping detector (If anyone lifts the phone in parallel connected phone)
67. Toy Telephone
68. Rain alarm
69. Electronic magic door lock using password
70. Lie detector
71. Mosquito repellent machine
72. Telephone Call detector
73. Fuse tube light glower without any choke
74. Morning alarm
75. Magic telephone lock
76. 3 in 1 circuit (light blinker, rain alarm, water tank alarm, light detector)
77. Low price hearing aid
78. Rat repellent machine
79. Automatic Phase Changer
80. Flying Saucer
81. Anti-Collision Rear Light
82. Light Fence
83. MAT Switch
84. 5-Bands Graphic Equalizer
85. Clock Timer
86. Fully Automatic Emergency Light
87. IR Music Transmitter and Receiver
88. Electronic Horn
89. Ultrasonic Proximity Detector
90. Secret Bell
91. Variable Power Supply Using a Fixed-Voltage Regulator IC
92. Appliance Timer-Cum-Clap Switch
93. Telephone-Operated Calling System
94. Front Door Guard
95. Bell-Cum Light Controller
96. Friendly Charger for Mobile Phones
97. Hearing Aid
98. Speed Control of DC Motor Using Pulse-Width Modulation
99. Remote-Controlled Fan Regulator
100. Low-Power Voltage Doublers