Smart IoT based water level sensing for overhead tanks - Part 6 (High level BOM and Project Costing)

Item	Qty	Unit Price (₹)	Subtotal (₹)	Notes / Description
ESP-01 (ESP8266 Module)	1	100	100	Wi-Fi microcontroller for IoT communication
Base Connector for ESP-01	1	60	60	Breakout/adapter board for ESP-01
Water Level Depth Detection Sensor	1	80	80	Analog output sensor compatible with Arduino
Buck-Boost Converter	1	160	160	DC-DC converter providing regulated 3.3V output
Lithium-ion Battery (18650, 2600 mAh)	1	170	170	Rechargeable power source
DC Adaptor (5V / 1A)	1	100	100	External power supply adaptor
MOSFET Switch IC (for power control)	1	30	30	Controls power distribution to modules
DC Jack (for adaptor input)	1	20	20	Standard 2.1 mm DC power jack
2-Pin Connector (for Li-ion battery)	1	10	10	JST-PH or similar connector
Capacitors	5	2	10	Used for voltage filtering and stabilization
Resistors	10	1	10	Used for biasing and signal conditioning
PCB (Custom Circuit Board)	1	75	75	Fabrication cost of PCB
Assembly / Soldering Cost	1	100	100	Labour cost for assembly and wiring
TOTAL COST			₹1,015	(Approx. total for one complete unit)