17. Applications and implications¶
Propose a final project masterpiece that integrates the range of units covered, answering: What will it do? Who’s done what beforehand? What will you design? What materials and components will be used? Where will come from? How much will they cost? What parts and systems will be made? What processes will be used? What questions need to be answered? How will it be evaluated? Your project should incorporate 2D and 3D design, additive and subtractive fabrication processes, electronics design and production, embedded microcontroller interfacing and programming, system integration and packaging Where possible, you should make rather than buy the parts of your project Projects can be separate or joint, but need to show individual mastery of the skills, and be independently operable
Though I decided to drift away from the medicine box idea that I initially had because I though that there would not be a great significance in creating an already-made product, I still wanted to focus on a health related project. Therefore, I decided to apply the OLED screen that I used for the output/interface and application programming weeks and use it as a screen for a smart watch that would measure heart rate.
Final Project Idea¶
What will it do? The project will be a wearable device (bracelet), detecting heart rate and oxygen saturation sing a heart rate sensor and then displaying this data on the OLED monitor of the bracelet. The bracelet will have a sensor below the OLED screen in which the user can place his/her index finger on to measure the heart rate and oxygen saturation. Moreover, the bracelet will have an alarm function 3 times per day (morning, afternoon, night) to remind the user to measure their heart rate and oxygen saturation. However, the user can always measure the rates using the bracelet anytime of the day (other than the times when the alarm goes off) if he/she needs to monitor his/her rates more than 3 times a day.
Who’s done what beforehand? There are some similar products available, such as an Apple Watch or FitBit which have more functions; however, these products are very expensive and contain extra functions. Moreover, there have been other instances in which heart rate or oxygen saturation have been measured in FabAcademy projects.
Although such products are also already invented, such as an Apple Watch with more functions or a Fit Bit, I thought that it would be interesting to create one myself. Some other projects done by other Fab Academy projects are listed below: https://fabacademy.org/archives/2015/eu/students/benitez_herrera.adolfo/final_project/final_project2.html https://www.youtube.com/watch?v=1UlwUpKN3EQ https://fabacademy.org/2018/labs/barcelona/students/ilias-bartolini/2018/04/30/project-heart-rate-sensor.html
What will you design? I will design a PCB and program the board for heart rate/oxygen saturation detection. A casing for the monitor will also be designed, and programming will be done for I2C connection to display on the OLED monitor. The bracelet itself will also have to be designed.
What materials and components will be used? OLED monitor heart rate/oxygen saturation sensor leather (monitor casing and bracelet strap)
Where will it come from?
How much will they cost?
What parts and systems will be made?
What processes will be used?
What questions need to be answered?
How will it be evaluated?
Also, I thought that I could continue to develop this final project further to create a simple smart watch to monitor heart rate at a low cost for wide accessibility. I would use composites (wildcard) for the casing, OLED and programming (output and programming), and possibly bluetooth or wifi. I would also incorporate 3D printing processes to create the casing, combined with composites. After researching, I believe that the only parts that I would need to purchase would be the OLED screen as well as the heart rate sensor.
References for Ideas¶
This video clearly outlines the programming component of the heart rate sensor and OLED display using I2C connection.
Design¶
As most of the device will focus on the heart rate sensor and the programming component, the only design needed will be for the casing of the OLED monitor and the watch strap/bracelet strap. For the OLED monitor casing, I am considering applying the process I learned from composites (wildcard week).