About the Project

An Arduino-Based Plastic Bottle Vending Machine to Support Environmental Awareness for Barangay Muzon, Taytay Rizal

Our Lady of Fatima University  ·  College of Computer Studies  ·  Antipolo City

Presented by

Angeles, Alyza Mae
BSIT — OLFU Antipolo City
Despabiladeras, Marnes
BSIT — OLFU Antipolo City
Ellema, Jessica A.
BSIT — OLFU Antipolo City
San Marcos, Nick Anjelo
BSIT — OLFU Antipolo City
Soriano, Lemuel Jaaziah
BSIT — OLFU Antipolo City

In partial fulfillment of the requirements for the degree Bachelor of Science in Information Technology

Background of the Study

Barangay Muzon, Taytay, Rizal is a lively and growing community where residents go about their daily routines, often using plastic bottles and other modern conveniences. As the community continues to develop, there is a growing interest in finding creative ways to engage residents in activities that benefit both them and the environment.

Plastic bottles are often improperly disposed of, contributing to pollution and clogged drainage systems throughout the barangay. A major challenge in the community is the lack of convenience and motivation for residents to recycle. Many residents are willing to help keep the barangay clean but often find it difficult to store and bring recyclables to proper disposal points.

Technology has opened up new possibilities to make recycling more fun, interactive, and rewarding. Incentive-based and interactive projects not only capture people's interest but also help build habits that can last a lifetime.

General Objective

To examine the effectiveness of an Arduino-based plastic bottle vending machine as a tool for promoting recycling behavior among residents of Barangay Muzon, Taytay, Rizal.

Study Location

Barangay Muzon, Taytay, Rizal — a growing residential community where plastic bottle mismanagement contributes to local pollution and drainage problems.

Reward Mechanism

Residents receive free drinks or biscuits in exchange for each valid plastic bottle deposited — a practical, tangible incentive proven to encourage participation.

Specific Objectives of the Study

1

Assess Feasibility

Assess the feasibility of using an Arduino-based vending machine for the collection of plastic bottles in a community setting like Barangay Muzon, Taytay, Rizal.

2

Determine Sensor Accuracy

Determine the accuracy and reliability of sensor-based detection in identifying and counting plastic bottles inserted into the machine.

3

Analyze Reward Effectiveness

Analyze the effectiveness of a reward-based mechanism — specifically free drinks and biscuits — in encouraging individuals to participate in recycling activities.

4

Evaluate Environmental Awareness

Evaluate the level of environmental awareness and participation in recycling among residents before and after the implementation of the vending machine.

5

Measure Overall Effectiveness

Measure the overall effectiveness of the vending machine in promoting sustainable waste management practices within Barangay Muzon, Taytay, Rizal.

What this study covers

Scope of the Study

  • Examines the use of an Arduino-based vending machine as a tool for encouraging recycling through rewards
  • Evaluates how accurately sensors detect and count plastic bottles, affecting reward reliability
  • Assesses whether incentives (free drinks or biscuits) motivate residents to participate in recycling
  • Collects data within a specific community environment to determine participation and user engagement
  • Explores residents' perceptions of recycling and their willingness to engage with technology-based solutions

Limitations of the Study

  • Accepts only plastic bottles of certain sizes and types — cannot generalize to all recyclable materials
  • Conducted on a small-scale prototype; does not reflect large-scale or commercial implementation
  • Sensor accuracy may be affected by crushed, damaged, or wet bottles
  • Rewards limited to drinks and biscuits during the study period, which may affect long-term motivation
  • Does not cover extended maintenance, cost analysis, or long-term adoption beyond the evaluation period

Who benefits from this project

Residents

The machine encourages recycling by offering free products in exchange for plastic bottles, fostering responsible waste management habits.

Barangay Officials

Supports local waste management efforts by providing an efficient system for collecting and managing plastic waste within the barangay.

Environmental Advocates

The project provides a model for other communities to implement similar incentive-based recycling initiatives.

Local Businesses

Offers businesses an opportunity to contribute to environmental sustainability while engaging directly with the local community.

College of Computer Studies — OLFU

Strengthens the department's academic programs by integrating practical, technology-driven solutions and community-based innovation.

Researchers & Future Researchers

Serves as a useful reference for studies related to recycling, environmental awareness, and the use of Arduino technology in community settings.

Key Terms

Arduino / ESP32

A small microcontroller board that controls the machine's sensors, gate, and bottle counting automatically, and sends transaction data to the web system over WiFi.

Plastic Bottle Vending Machine

An automated device that accepts used plastic bottles from residents and credits points to their account in return, redeemable later for small rewards.

Sensor

An electronic component that detects when a plastic bottle is inserted into the machine and helps count it accurately so the right number of points is credited.

Reward-based Mechanism

A system that motivates residents to recycle by crediting points for every bottle deposited, which residents later redeem for free items or incentives.

Reverse Vending Machine (RVM)

A special type of vending machine where people deposit empty containers, and the machine credits a reward or incentive in return.

Environmental Awareness

Understanding why it is important to keep the community clean, reduce plastic pollution, and properly dispose of waste materials.

Inductive Sensor

A sensor that detects metal objects. It runs first and takes priority — if it senses metal, the item is rejected immediately, before any other check happens.

Capacitive Sensor

A sensor that detects plastic material. It confirms an object is actually plastic before the machine opens its gate and accepts it.

Ultrasonic Sensor

A sensor that measures distance and is used to detect when the machine's storage bin is already full, and to validate bottle size.

Incentive

A reward given to encourage residents to participate in recycling activities and develop environmentally responsible habits.

Barangay Muzon

The specific community in Taytay, Rizal where the study was conducted and the vending machine was deployed and tested.