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Shock or Study Bracelet

Hackathon Entry

2022
CADC++C

Overview

Hackathon entry for the theme “automation”. Our take was a bracelet device that would automatically shock you in various cases, indicating that the user should remain focused on their task.

Our team used my LoRa radio system with a button and buzzer to act as the “shock”. We also used an STM32 board setup to display how the buttons for changing values like timer duration would work. Lastly, we 3D modelled the bracelet itself in detail.

Problem

Bracelet Sketches
Bracelet Sketches
Design Matrix
Design Matrix

Design something that highlights the engineering process and fits the category of “automation”.

Implementation

STM32 + Push Buttons (left), LoRa (right)
STM32 + Push Buttons (left), LoRa (right)
CAD Model of Bracelet
CAD Model of Bracelet

As a team, we had 1 week to develop this automation themed product. We spent the first days planning and brainstorming multiple options. Following standard engineering practice, we made decision matrices and did preliminary sketches.

We settled on this watch and split up tasks into our specializations—two Mechatronics and one Mechanical engineering student.

For my delegation, I was primarily responsible for the embedded systems. This meant using my LoRa radio system for a “wireless” shock effect, as well as coding the STM32 board using C with finite state machine, timers, and interrupts.

Results

Our team produced independent systems that represented our idea for a bracelet that shocks you when a certain event occurs. Due to constraints, we did not have the resources to combine all elements into one final design.

Not only did we win the categories of “Best Supporting Documentation” and “Best Presentation”, but we learned invaluable skills in communication and teamwork for engineering projects.