Tag: electronics

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Watching It All Come Together

ASSEMBLING.

This week we finished our three-week project at the Fab Lab to create an exercise watch that is able to sense whether you are doing curls or twists correctly. This project was designed so that we would have to use as many of the Fab Lab’s tools as possible, and it was an incredibly interesting way to familiarize ourselves with these resources. This week’s portion of the project included coding the Arduino and assembling the rest of the already created parts. To recap, we used a laser engraver to create the wooden parts of the watch, where we created our own designs to both differentiate between when the watch is sensing curls or twists and to make the watch more interesting for a specified consumer base. Next the watch strap was sewn using one of the Fab Lab’s sewing machines. We also connected tilt sensors and wires to the Arduino. Finally, while we were provided with the parts, the holder for the tilt sensor (the little white thing in the images) was 3D printed from the Fab Lab’s 3D printers. It was really gratifying to finally see three weeks’ worth of work culminate into one final project! These multiple tools have also got me thinking on different applications that we could possibly use in our own prototyping projects, and I’m even more excited to explore the opportunities.

TELLING A STORY.

With the remaining time after the watch assembly, we congregated in our groups and storyboarded the experience that we wanted users of our product to have. This included how the user would find out about, attain, and learn to use our product. As a review, I am a part of Team Solestice, and we are creating a detachable tread that would allow leg prosthetic users to walk on ice while minimizing slippage. We created 7 storyboard boxes in total. The first box identifies who we think the users of our product would be, in Solestice’s case, this would be leg prosthetic users. The next box identifies how the user would find out about our product, which Solestice believes would be through either some internet ad or word of mouth from social media. Following, we showed the prosthetic user going to a store to see the product in person, and possibly asking the store clerk more information about how the product works. The fourth box includes the user watching a YouTube video, which would be uploaded by Solestice, on how to put the tread on, take the tread off, etc. In the next two boxes, we have a prosthetic user putting the tread on by themselves and walking fearlessly over ice without slipping. In the final box, we have the user taking the tread off once they have entered an indoor area and storing it easily. This is the vision that we as a team have for Solestice, and we hope to make it a reality!

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FabLab 2.0

Inkscape vector file of watch to be laser cut

This week we returned to the FabLab. We continued to familiarize ourselves with all the tools and tech the lab has to offer. We specifically learned a vector editing software called Inkscape. Through this workshop we learned how to create basic shapes, manipulate them, and produce more. After learning the basics of the software we learned to transform images into vector graphics. These skills were then applied to a customized watch. The watch is a device that allows patients who have to do bicep curls and rotation in wrist during rehabilitation. The base of the watch consist of 3 wooden circles, two of which have rectangles on each side. I thought it would be help patients if the watch had small arrow indications of which way the device goes. The top layer rotates, so I designed an arrow pointing in the direction of proper rotation.

3 layered watch with electrical components

After this we moved into sewing. Unlike most of my peers I have experienced sewing. My sophomore year I sewed a jacket with a sleeping bag attachment completely from scratch. So during the tutorials and walkthroughs I was a couple steps ahead. We all picked the fabrics we wanted our wristband for the watch to be and then cut it to scale.  We sew it right sice in and sewed the seam. This created the sort of sack like appearance of the band. Getting it right side out was a hassle, it required us to use these thin wooden rods to pull the fabric through. We finished up by attaching velcro strips to the band to ensure a comfortable and secure fit to the wrist.

Images showcasing the process of sewing and creating the band for the watch

The second half of class each group presented to Milestone Labs and Adam Bleakney. We’ve made a lot of progress since last speaking with them. We got a lot of insight from this conversation. We realized we hadn’t thought everything thoroughly. Our design is solid but we have to really hone in on the attachment aspect of it. The overall ease of use should be convenient for the user. They also asked a lot of questions regarding materials of our device. We are currently scheduling a time to interview a material science professor here at the university. This week I have scheduled a virtual interview with my physical therapy. We also have a meeting this monday with my professor who handmakes shoes. We plan to do a bunch more research structured around our opportunity and project idea.

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Week 8: Second Visit in Fab Lab

Continuing from last week, we visited the Fab Lab again this week. In this week, we were still separated into two groups, and we switched sections. This week, I learned how to build an electric circuit using the breadboard. It could be big, but then it could be very small and use to build a computer. I think this is very important to know about in today’s day, when we rely heavily on electronics. Before this week, I thought that as a business major, I would never get in touch in building an electric circuit myself, since I am not an ECE student. After this training section, I gained a better understanding of how to operate with the tools in the Fab Lab and the potential necessary tools for design.

After the Fab Lab training session, we entered the stage of prototyping. While we were waiting for the meeting with the Milestone Labs, we started planning again for our prototype. We used some other materials to redo our low-fidelity prototype and talked about our concerns on some of the ideas. Afterward, we met with the Milestone Labs together with Jenna. During the meeting, we discussed our project progress as well as our upcoming research plan, a meeting with the founder of the organization Yoga for Amputees. Again, we discussed our initial ideas and our low-fidelity prototypes. In the end, we came to the realization that some ideas we initially have may not be the most feasible idea to have for our product, including the idea of using magnetic tools and the idea of extending the frontal surface of the attachment.

After our team’s meeting with the Milestone Labs, we also met with the founder of Yoga for Amputees, who is an amputee and has a lot of experience working with different amputees across the United States. She provided us a lot of new insights that we had never considered prior to this meeting. She talked about how a relatively fixed ankle and curved heel of the prosthetic leg has contributed to the difficulties for amputees to keep balance. In this case, she suggests us to try to design a product that can allow some curved flexibility to the ankle but at the same time also prevents the ankle from “moving” horizontally (see video). In addition, she also suggests us to design a product with a flatter heel that can allow the amputee to have greater contact with the ground. She also brought up ballet prosthetics that has already existed in the market. We researched the ballet prosthetics and also found that the key to the balance of the ballet prosthetics was the different ankle design that ballet prosthetics have as compared to the normal prosthetics. Also, she mentioned that there would be different needs for different amputees due to the preferences of their prosthetic usage and what makes them feel secure. Therefore, we may be better off if we could talk to different types of amputees to gain what they think about the product so that we could bring customization to our designed product to meet users’ needs. Overall, we gained a lot of insights from the meetings with Milestone Labs and with the founder of Yoga for Amputees. From these insights, we will redesign our prototype and try to get to a more suitable solution.

We got our inspiration of the potential design of ankle from the 3D-Printed pangolins, which will only curve on one side, but will not curve if we turn it to the other side. We believe that this structure of ankle may provide more horizontal stability and prevent falling from ankle bending.
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New Resources: A Fabulous Lab

FAB-TASTIC.

This week, we got a formal introduction to the Fab Lab. The director of the Fab Lab had previously been a guest speaker in the class, but this time we had a chance to host the class there and use their facilities. We first started with a tour of the place and the different tools they had there. They first went through their policies for use, which was surprisingly accessible. Most tools were only priced at $1 for use, and they allowed people to use their own materials while also having some for sale.

In terms of the tools, the staff went through the multiple applications of the electric cutter, which could not only be used to cut vinyl stickers, but also precision paint things if the knife part was replaced. Next, they showed us the screen printing and embroidering/sewing areas. They also introduced us to the concept of 3D printing on top of meshed fabric, which has been used a lot in the fashion industry recently (seen green scales picture for an example). Next, they showed us the milling, soldering, and electronics area, where they showed some applications, such as milling your own circuit board or working with microcontrollers. Finally, they brought us to the 3D printing and laser engraving workstations. Overall, it was really inspiring to see all these different technologies consolidated in a single area as well as to hear about many of the different projects that have been created at the lab. I was shocked to find out about such an untapped resource that I had not known that I could take advantage of as a resident of the Champaign-Urbana area.

FABRICATION IN PROGRESS.

After our brief but thorough tour, we were split into two groups to attend workshops run by the staff of the Fab Lab. I attended the workshop relating to using the laser engraver as well as the program used to vector model what we want to engrave, Inkscape. Inkscape is an open source program which is quite similar to Adobe Illustrator and allows people to vector model their illustrations; I found it really fascinating that the Fab Lab intentionally uses a lot of open source software so that when they teach people how to use their programs, the skills will continue to be applicable outside of the Fab Lab.

Within Inkscape, we started modelling an exercise watch made out of wood which would be able to track if outpatients are performing their exercises correctly. There will be motion sensors inside the watch, where if the face is facing one way, it would detect bicep curls and facing another way, wrist twists. We first modelled the watch face together while the instructors introduced us to the program, and once we started to become more familiar with Inkscape, the staff released us to add our own designs to the watch. We were instructed to keep the user base in mind and make our unique designs while thinking of certain groups, such as children or elderly outpatients.

With the last 45 minutes of class, we started brainstorming prototypes for our team products. While brainstorming, our TA Mehmet wanted us to think of new ideas quickly, never spending too much time on a single idea. We were instructed to brainstorm in different rounds with different restrictions. For example, one round we had to think as if we had a $0 budget, another if we had an unlimited budget, and yet another if we had to think of our product with children in mind. In the end, we then had to decide which prototype we thought would be the most feasible, easiest to implement, and most effective and decide based on individual team members’ decisions which prototype to make a crude 3D prototype of. In the end, Solestice decided to go with a sole that is attachable by Velcro strips to a shoe, and we will be making this prototype before the next class.