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Medflow - Pill and Water Dispenser (Prototype)

Note: Medflow is a prototype and is not intended for use as a medicinal assistance device.

Medflow is a pill and water dispenser device powered by Arduino UNO. The project was developed for the INFO-I341 Prototyping for Arduino course offered in Spring 2023 at Indiana University.

Project Overview

Medflow's purpose is to provide a prototype for individuals who need to take medicine regularly with a simplified and automated solution. Medflow combines a pill holder and a water pump to dispense the exact dosage of pills and required amount of water per usage. The device aims to simplify the medication process and enhance convenience for users.

Hardware Components

Medflow was built using the following hardware components:

  • Arduino UNO
  • Jumper Wires
  • 2 Tactile Buttons
  • 2 LEDs
  • 2 Ultrasonic Sensors
  • 1 Servo Motor
  • 1 Water Pump
  • 3D-printed Rectangular Water Tank
  • Flexible Water Pipe
  • 3D-printed Pill Dropper
  • Laser-Cut Shell

Device Features

Medflow offers the following features:

  • Pill Dropper: The device utilizes a servo motor, an ultrasonic sensor, and a 3D-printed dropper to dispense pills accurately. When a hand is detected near the pill dropper, the servo motor rotates to release the pills and then returns to its default position.

  • Water Dispenser: Medflow includes a water pump, a flexible water pipe, an ultrasonic sensor, and a 3D-printed water tank to dispense the required amount of water. When a cup is detected next to the water dispenser, the water pump is activated, filling the cup with the precise amount of water.

  • Emergency Stop (E-stop): The pill and water dispenser incorporates two E-stops, one for each mechanism, to allow users to disable the respective mechanisms if they encounter any issues. Each E-stop consists of a button and an LED indicator. When the LED is off, the corresponding mechanism is disabled.

Functionality

The dispenser.ino file implements the following functionalities:

  • Pill Dropper:

    • Detects the presence of a hand using the ultrasonic sensor.
    • If a hand is detected, the servo motor rotates to release pills from the 3D-printed dropper mechanism.
    • After pill dispensing, the servo motor returns to its default position.

  • Water Dispenser:

  • Detects the presence of a cup using the ultrasonic sensor.

  • If a cup is detected, the water pump is activated to pump the required amount of water from the 3D-printed water tank through the flexible water pipe into the cup.

  • Emergency Stop:

    • If an E-stop button is pressed, the respective LED indicator turns off, indicating that the mechanism is disabled.
    • The disabled mechanism will remain inactive until the system is rebooted.

Feel free to explore the dispenser.ino file for more details on the implementation of these functionalities.

Note: Due to the complexity of the prototype's design, build instructions will not be provided.

Contributing

Contributions to the project are welcome. If you find any issues or have suggestions for improvements, please open an issue or submit a pull request on the repository.

License

The project is licensed under the MIT License. Feel free to use, modify, and distribute the code for personal and commercial purposes.