Coin Operated Water ATM with Bottle Dispenser

Abstract

Introduction: The Coin Operated Water ATM with Bottle Dispenser is an innovative automated system designed to dispense water and bottles upon the insertion of coins. The system’s primary components include a coin acceptor, water dispensing mechanism, bottle dispensing mechanism, and a user interface, all controlled by a Raspberry Pi.

Objectives: The coin acceptor validates and counts inserted coins, updating the user’s balance in real-time. Upon reaching the required balance, the system activates the water pump and solenoid valve to dispense a predetermined amount of water while simultaneously releasing a single bottle from the dispenser. Integrated sensors monitor the water tank level and bottle availability, ensuring seamless operation and resource management. An LCD display provides real time information to the user, enhancing the overall user experience.

Methods: The proposed methodology uses power supply and control unit, coin acceptance and validation, water quality monitoring, dispensing mechanism, user interface display and water dispensing units. Raspberry-pi is used as the main control unit. Input sensors help to check the water quality, after coin acceptance, water is dispensed only if the water quality is of standard quality. User gets the option for dispensing bottle or water. Quantity of water is decided by coin value.

Results: This paper demonstrates the practical application of embedded systems and automation in addressing real-world challenges, offering a convenient and effective solution for dispensing clean drinking water.

Conclusions: The Coin Operated Water ATM with Bottle Dispenser is an innovative and practical solution to tackle the world- wide issue of ensuring safe potable water in disadvantaged regions. By leveraging automation and embedded systems, the project demonstrates how technology can simplify access to essential resources, reduce waste, and promote sustainability