BY: MOLLY GLASS, KAYLA O'NEAL, LILLY SWEANEY, AND LIAM WALKER.

Engineering

This project helped us learn how to use the engineering design process to create a project.

Electronics

Our project required the use of electronic components, which can be hard to work with. We learned how to combine an Arduino, motor controller, motor, ac/dc converter, and a bluetooth module to create our product.

Design

The design of our product had to work with existing stove designs, we did many measurements and tests to ensure that our product could fit into 5 other stoves.

Design Specifications

Less Than 800 ppm of Gas

Through regular use of the product, less than 800 parts per million of gas will leak.

Emergency Shut Off

Our product will automatically shut off when gas levels exceed safe amounts.

Young Child/Pet-Proof

Our product will render the stove young child/pet-proof so it is safe to leave unattended with young kids and pets.

App That Monitors the Stove Status

There will be an app that monitors the status of the gas flowing to the stove and allows the user to shut off the stove.

Added to Stoves From Production Stage

The device will be a product that can be added to stoves from the production stage, removing any interaction from stove users.

LED Indicator

The product will have an LED indicator that alerts the user that gas has been shut off.

Notify the User After it Has Been Shut Off

The stove will notify the user after it has been shut off and the user can easily reset it.

From Concept to Reality

Step 01

Proof of Concept

We started with a gas-flow idea, then simplified the design after mentor feedback. That shift led us to focus on heat detection instead.

Step 02

Our Stove

After a lot of calls and recycling-yard visits, we found a free stove through Appliance Recycler. It became the base for our full prototype.

Step 03

Modifications

We reworked the stove to improve the look, make it easier to move, and better understand how the internals fit together.

Step 04

Gears

We designed custom gears for the motor and burner valve. After testing, we flipped the gear sizes to get better torque with less strain on the motor.

Step 05

L - Bracket

Our first 3D-printed mount shifted too much, so we replaced it with a welded L-bracket. That gave the motor a sturdier, more reliable mount.

Step 06

Thermocouple

We mounted a thermocouple near the gas nozzle so the system could sense heat quickly without exceeding its temperature limit.

Step 07

Electronics

We connected the Arduino, motor controller, power supply, Bluetooth module, and LED into one working system ready for testing.

Step 08

Logic

When the knob turns, the Arduino checks how much the temperature changes over 10 seconds. If the burner is not heating up, the system shuts the stove off.

Step 09

Testing

We tested for gas leaks, shutdown response, app updates, LED alerts, and fit on other stoves. The prototype met the main goals with only minor adjustments needed.