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Coin Operated Water ATM with Bottle Dispenser Project


In an effort to combat environmental damage caused by plastic waste and to provide convenient access to drinking water, the Revolutionary Smart Water ATM emerges as a leading solution. This coin and card-operated water vending machine combines technology and sustainability, offering water on demand without the need for carrying cash or disposable bottles.

Problem Statement

Traditional methods of purchasing water in single-use plastic bottles significantly contribute to environmental pollution. With a substantial number of these bottles failing to reach recycling centers, it’s vital to introduce a sustainable alternative that reduces plastic waste and offers convenience.

The Smart Solution

The Smart Water ATM addresses these challenges head-on. It’s equipped with a state-of-the-art STM32 controller, coin module, solenoid valve, keypad, RFID scanner, and robust motors to deliver a seamless user experience. Here’s how it works:

  • Coin and Card Operations: Users can activate the machine using coins or by scanning a card, such as an RFID-enabled monthly pass.
  • Integrated Bottle Dispenser: The machine dispenses reusable bottles, reducing plastic waste and promoting sustainability.
  • Selectable Water Quantity: Users choose the desired amount of water, from 100ml to 1 liter, with corresponding affordable pricing.
  • Flow Meter Sensor: Ensures accurate dispensing of the selected water amount, stopping the flow once the desired quantity is reached.


  • STM32 Controller
  • LCD Display
  • Keypad
  • Coin Module
  • RFID Scanner
  • Flow Sensor
  • Electric Valve Pump
  • And more


  • Environmental Sustainability: Reduces reliance on single-use plastic bottles, significantly cutting down plastic waste.
  • User Convenience: Offers a cashless and coin-operated option, catering to various user preferences.
  • Cost-Effective: Provides water at a fraction of the cost compared to bottled water, making hydration affordable and accessible.
  • Versatility: Suitable for public places, travel stations, and communities, providing clean water access everywhere.


The Revolutionary Smart Water ATM is more than just a vending machine; it’s a step towards a sustainable future. By offering an innovative solution to water access and plastic waste reduction, it aligns with global efforts to protect the environment while serving the public need for clean and affordable water.

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