Quantity   Component name
1 × DIGITEN G3/8 Water Flow Hall Sensor Switch Flow Meter Flowmeter Counter 0.3-10L/min http://www.amazon.com/gp/product/B018U5ROV4?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00
1 × Perf Board Holds all of the components together.
2 × 7 Segment Display Displays Water Usage.
1 × ATMEGA328P Microprocessors, Microcontrollers, DSPs / ARM, RISC-Based Microcontrollers
1 × Hookup Wire Connects Everything.
1 × Arduino Nano (for Test Setup) Microcontroller.
1 × RGB LED (for Test Setup) Indicator LED.