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WhatsApp Video 2018-10-22 at 10.24.16.3gppDay 21
Day 21
22/10/2018
The team has decided to have an alternative in case the air bag braces does not work, but will still be focusing on making the air bag idea work.
The team also met up with the Design Odyssey mentor and she gave us tips on the overall project goal as well as updating the Business Model Canvas, target customers and the next steps for the prototyping phase.
The vacuum pump arrived and can operate with the air tubes and air bags. The video attached showcases the airbag being inflated by the vacuum pump.
As the initial prototype presentation date approaches, the team will focus on improving the prototype.
-Ethan
Day 22
Day 22
23/10/2018
The team went to finish up the prototype to present on the SUTD Bootcamp for the next day. The air bags were placed inside and the electronics are hooked up together.
In terms of the future progress, the team have rough designs planned out and did some research on where to buy such equipment. Other than that, the team did administrative work such as Bill of Materials, reports and other miscellaneous things.
-Samuel
Day 23
Day 23
24/10/2018
The team traveled to SUTD to present the initial prototype. At SUTD, the team refined the "How Might We" statement(problem statement), explored different idea implementations and ultimately gained newer features to add into the project.
The workshop was oriented around what the users want, not what the team thinks is the best method of solving the problem.
What we did:
- Updates on progress
- How might we?
- Identifying Needs and functions
- Morph Diagram
- Pugh diagram
More details will be updated in the 2nd Design Process.
-Ethan & John
Day 24
Day 24
25/10/2018
The team went to shop the materials required for the next design idea.
The materials are straps and buckles, required for the strap idea.
In terms of fabrication, the team created a template for the ease of air bag fabrications.
-John
Day 25
Day 25
26/10/2018
The team tested the straps and how it should work. The video at the side shows the effect of the design.
After testing the effectiveness, the team then went to redo the design to fit the needs of the product.
The main product is wrapped around the shoulders and can be pulled from two sides to control 2 sides of the body. This tackles the scoliosis effect by preventing the person from turning too much. In addition, the two motors can be activated at the same time to pull the user's back more, tackling the hunchback issue.
There will be a need for a 3D printed part for a central point where the parts are held together.
In electronics, the wire diagram has been reworked to fit the needs of motors.
-John
WhatsApp Video 2018-10-26 at 15.30.27.mp4
Day 26
Day 26
29/10/2018
The team tested the sensors and have completed the following:
- Connections of wiring mostly done
- Sensors working properly on Arduino
- Works on NodeMCU
- Working on calibration
- Redesigned the base model for it to work
-Samuel
Day 27
Day 27
30/10/2018
The team had a discussion with the mentors and the summary of the conversation is:
- What the team is currently doing is finding a solution without checking the audience. So there is a need to interview others on whether they want the design or a different design. But that is for the final design and the team can still carry out testing if the design actually works to begin with.
- The team cannot afford (cash and time wise) on the Curie nano sensor. So the way to get "incorrect" and "correct" readings is via taking a range of values that is deemed bad or good posture.
- Try to have a design that uses a weak motor at the centre of the back where it tugs but not shape the body.
- The final product has to tackle the new "How might we create a preventative measure that adjust back postures for people who suffers from hunchback and scoliosis"
There are other projects given as templates for the team to explore
-Samuel
Day 28
Day 28
31/10/2018
The team focused on admin work and making multiple sensors working in conjunction.
As of the update, multiple sensors are working. The module is able to connect to bluetooth.
Pictures and research have been updated into the report. According to the research, 264 million work days have been lost due to back pain in a year in America alone, which accounted for USD100 billion lost, approximately USD50 billion was used for healthcare services.
This provides more of an incentive to tackle this field, as (if done right) this project can have an increase in economic growth.
-Ethan
Day 29
Day 29
01/11/2018
The team have tested the sensors on a human and went to check on the data provided. The point is to understand what does the data provide and be able to configure the body posture afterwards.
Current electronics stage:
- Sensors working
- Program working, but will refine
- Circuitry will be refined
- Motors have yet to be acquired
- Board to extend mpu 6050 created
The team also tested the strap prototype, however, it did not comply to its purpose. So the team also did some revisiting of older ideas, brainstormed and researched more on what can be done to make idea more efficient.
-John
Day 30
Day 30
02/11/2018
The team did a more detailed plan on the design. After testing with acrylic, it was realised that it was not suitable as thought of as it was brittle and was uncomfortable to wear. Thus there is a need to search for other ideas. The photo with the red outline showcases the outline of the acrylic and how one point was broken.
From the rejected design, there was an eureka moment where a newer design was formulated to suit a motor and have a tightening effect using fishing wire and getting a cushion for more comfort. There may be a need to mill out parts.
The team will be shopping for newer parts after finalising the shopping list.
-Ethan
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