🌞 Sensor-Based Simple Projects (71–85)

71. LDR light sensor

72. Automatic street light

73. IR obstacle detector

74. IR remote tester

75. Temperature indicator (LED)

76. Gas leakage indicator

77. Motion detector demo

78. Line follower concept

79. Dark detector

80. Light intensity meter (basic)

81. Rain sensor demo

82. Touch sensor demo

83. Heat sensor alarm

84. Magnetic sensor demo

85. Proximity sensor demo

. . -7% . PKR6,238 . -50% . PKR1,585 . -11% . PKR2,164

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