P19414: Toilet Use and Pit Conditions DAQ and App


Project Summary Project Information

Project Background

A large portion of the world's population has no access to sanitary toilet systems. Because of this, preventable diseases are able to cause immense damage in underdeveloped regions of the world.

One solution to this problem is the arborloo, a movable pit latrine which collects human waste to use for compost, and in doing so keeps pathogens from the waste from entering drinking water. The arborloo is lightweight and inexpensive, allowing it to be moved by a small group of people and available even for impoverished families.

A previous MSD team, P15416, created a lightweight base for the arborloo. This was followed by P18416 creating a mold system for creating multiple arborloos for low cost. Funding has been created for testing the system with 100 families in Haiti. Over a period of a year, data will be gathered on the performance of the arborloos on the usability of the compost, and its effectiveness as a pathogen deterrent.

Problem Definition

This project focuses on the data acquisition system to be placed inside the compost pit. This system should be able to monitor the number of times the arborloo is used, the temperature and moisture in the pit, and if possible the pH and oxygen content of the pit. The device must be independently powered, preferably by batteries, and consume low enough power to last the long periods of time between data being gathered. Above all, this device must be inexpensive.

Project Deliverables

All design documents

Working prototype - sensor system integrated in toilet, viable data collection application

Technical paper


Short instructional video showing how to use the system

Project Name
Toilet Use and Pit Conditions: DAQ and App
Project Number
Project Summary
Low power, low cost sensor system for monitoring an Arborloo in Haiti.
Start Term
End Term
Faculty Guide
Pr. Slack, gbseee@rit.edu; Pr. Garavuso, gxgddm@rit.edu
Primary Customer
Sarah Brownell, sabeie@rit.edu
Sponsor (financial support)
RIT MSD, contact

Team Members

From left to right: See names in table below.

From left to right: See names in table below.

Member (from Left to Right) Major Role Contact
Thomas Sansone Industrial Engineer Facilitator txs6358@rit.edu
Pablo Mendoza Industrial Engineer Purchaser pm5153@rit.edu
Spencer Logan Electrical Engineer Lead Engineer sxl2621@rit.edu
Matthew Meehan Computer Engineer Lead Software Engineer mtm6853@rit.edu
Connor Norton Electrical Engineer Project Manager cjn4171@rit.edu

Work Breakdown: By Phase


Planning & Execution

Project Photos and Videos

Imagine RIT

Gate Reviews

Problem Definition

Systems Design

Preliminary Detailed Design

Detailed Design

Build & Test Prep

Subsystem Build & Test

Integrated System Build & Test

Customer Handoff & Final Project Documentation (Verification & Validation)

Work Breakdown: By Topic

Use this space to link to live/final documents throughout the project. Your team should customize this as-needed, with input from your guide and customer. The example below will address most of what most teams need to capture.

Project Management Design Tools Design Documentation Implementation Validation Presentation & Dissemination





Risk Management

Problem Management

Communication & Minutes

Use Cases


Functional Decomposition

Morphological Chart

Pugh Concept Selection


Mechanical Drawings

Electrical Schematics

Software Diagrams

Facility Layout



Test Fixtures


Test Plans

Analysis Results


Test Results

Design Review Documents

Technical Paper


Imagine RIT Exhibit


We would like to extend our gratitude toward all of the people who have helped our team throughout the life of the project including

Sarah Brownell
Professor George Slack
Professor Gerald Garavuso
Professor Carlos Barrios
Mike Buffalin