• × BS170 Logic Level N-Channel Mosfet  2 × ₨15
• × 100 Ohm 1/4 Watt Resistor  1 × ₨1
• × LM741 Operational Amplifier IC  1 × ₨20
• × CD4518 Dual 4 Bit BCD Counter IC  1 × ₨30
• × Rain Sensor  1 × ₨120

Subtotal: ₨201

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