Alexander Mote Pomodoro Timer ECE342-W21

3D Printing
Arduino
PCB
Enclosure
Junior Design

An individual project for ECE342: Junior Design II. Students were required to design and build a timer that could detect an object such as a phone, and sound a 440Hz alarm if the object was removed from sight. The timer had a 25-minute and 5-minute setting, as well as an automatic setting that switched between the two, and had to be accurate to less than one second of error per minute. The LED display also had three brightness settings. Major accomplishments on this project were the design and implementation of a PCB shield for an Arduino microcontroller and a 3D-printed enclosure to make the timer safe for the end user. The largest challenge was acquiring all necessary materials, due to shipping issues during the COVID-19 pandemic. Future improvements could be made by using more cost-effective components and including a built-in power switch that can disable the device without unplugging it. A major lesson learned from this project was to allow more time for troubleshooting and revising PCB designs and 3D modeling errors.

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Artifacts

Name Description
Developer Guide A technical document for the timer and its design artifacts.   Download
Presentation Video A video presentation of the circuit and its capabilities, as well as a reflection on the challenges and lessons of this project.   Link
Enclosure Model A 3D model of the enclosure design for this project.   Download
PCB Schematic The PCB Schematic for the Arduino shield designed for this project.   Download
Executive Project Summary A summary of the project timeline and key lessons learned from the project.   Download