Monitair

Project Overview

The aim of this project was to create a device that would determine the percentage of gas present in a gas cylinder, as well as developing a companion application that would display, track, and monitor this data.

Process & Solution

The process began with demand and competitor analysis. I was aware of demand as my family and I in combination with some neighbours and freinds have an issue of not knowing how much gas is remaining in our gas bottles and as a result not knowing when they will run out until it is to late. (Our water heaters use gas so it's a constant issue). I searched for a readily avalable solution however was unable to find one on the market that fuffiled our reqirements.

After extensive research and basic prototyping I decided to utilise four loadcells configured to form a wheatstone bridge mounted to a platform which each gas cylinder sits on. I outsourced the PCB design and development (after first deciding on the main components, and creating a basic version). Once the PCB design and development was finallised and complete I developed the program to run on the PCB which reads the raw loadcell data, converts it to weight, and finally to a percentage based on predetermined values. After the completion of the hardware and associated program I created the UI/UX for the user application which the data will be transmited to. (Final application development is still in development as of November 2025).

Visual Showcase

Results & Takeaways

The hardwear and software development resulted in a solution that satisfied the objectives set out to achieve in this project including, the ability to view real time gas levels expressed as a percentage, low gas level alerts, track gas level data overtime, and view daily gas consumption as well as estimated days of gas remaining based on historical user gas consumption data.