Progress Tracking:
Box (Wiring):
Prototype Box:
Prototype (Light testing/without heart rate monitor):
Final product test:
Box (Wiring and Arduino (interior)):
Materials Used:
- Arduino Uno
- Jumpwires
- OLED Screen
- Pulse sensor
- Wood
- Cardboard
- Computer
Planning:
Week 1:
On the first day of forming our group, George and I began researching some products and issues that already existed in real life in order to narrow down our ideas to one. I mainly focused on health-related products such as smart bands, sweat monitors, footstep trackers, etc.
Week 2:
When the idea research stage was complete we finalized our idea and decided to make a heart rate sensor. Because the monitor required us to code and use the Arduino it made it a challenge to complete the device due to the lack of knowledge we had on how the Arduino works. But eventually while researching some guides on how the Arduino works and how the device is built, we had a better understanding of how to use an Arduino.
Building:
Prototype:
During the making of our prototype device, we began our research to improve our understanding of how the Arduino UNO works. During this process, we had to consider which materials were required for the prototype and what function each material had. Because our materials had not yet arrived, we began making the prototype heart rate monitor using an LED light. We began assembling the prototype setting up the LED light but left the OLED screen and pulse monitor out (materials not arrived). It took us about 2 class periods to fully understand how to assemble and code for making the prototype. After the device was finished we built a cardboard prototype model of the box beforehand giving us a rough idea of what the final laser cut box would look like.
Final Product:
When the pulse sensor and the OLED screen had arrived we began assembling the heart rate monitor following the circuit diagram:
(Removing the buzzer)
Once the device was all linked up to the Arduino we began downloading the package required for the pulse sensor and the OLED screen on the Arduino app. Since the code for the device was provided online we uploaded the code to the Arduino and began testing. Surprisingly the device worked on the first try, although it wasn’t too accurate (uses light to track blood pulses). After a few trial runs with our peers, most of the time the device was accurately tracking the resting heart rate (60-105 bpm).