We started off this week by testing out our prototype from last week to make sure it achieved our design criteria. Our first test was precision, where we assured that our device could get consistent measurements through several tests. We compared the precision of our device to that of the currently used goniometer, and found that our design had a lower standard deviation than the goniometer.  Below is a photo of use measuring our rotation with the goniometer during our tests.

We also tested the torque required to turn our device because we want it to be easy for the patients to rotate. We found that the torque was far below our target threshold and it passed the test. We also conducted usability testing to using other SEED members to confirm that our device is both easy to use and comfortable to users. The only test we failed was durability. We conducted a drop test from table height onto carpet, and the model broke at a joint on the second drop.

After these tests we made a list of changes we wanted to make to the prototype and moved forward to build a final prototype for the program. Our goal is to finish by next Wednesday in the morning when we meet with our client and get some feedback. FOr this final prototype we are using the Fortus printer upstairs that prints ABS plastic in much higher resolution than the printrbots we have been using up to this point.

In addition to our usual work, we also had the opportunity to go to the zoo this week to give them our prototype anteater enrichment devices. They sent us videos of the anteaters using the toys afterwards, which was great to see after working on the projects. On Friday we also had the opportunity to screen print T-shirts and take a break from working on our main projects. Next week we will finish up our projects and unfortunately it will be the last week of the program.