156B Week 9

156B Week 9

Overview of Status of Analysis, Design, Fabrication, Tests, etc.

• New enclosure CADs have been created and printed out.

• New web interface that can read 2 finger pressure sensors simultaneously.

• Slight delays because one of the ESP32 boards burnt out.

• Might need to redesign PCB, some pins require more space than initially thought

• Better 10pin Connectors have been ordered

Accomplishments from Previous Week

• Dr. Chang brought a co-worker to test out the glove. Not functional because the esp32 burnt out.

• However, he did like the overall wear and feel of it

• Interface has two sensors and can saved as a file with a simple change of web address

• Improved Calibration rig enclosure created

• More than one sensor can be read through the Raspberry Pi

Goals for Next Week (list names after each item). Use specific and measurable objectives.

• Calibration of the sensor onto the Raspberry pi (Euan and Michael by the end of Thursday)

• Order new ESP32 and re-design PCB (possibly) (Kyle)

• Create better wire routing for wrist enclosure and better sizing for the arm enclosure (John)

• IMU integration, we were trying to figure the best way to visually represent this, (Michael)

Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)

• Make sure that we saved the data as graphs though the new UI is nice

• Wants a way in the UI to turn off haptic feedback to get an understanding of how people perform without correction

• For the wrist angle, understanding the angle of extension is most important versus the other 3 angles (though supination might be good)

  • There's one study on wrist angles that Dr. Chang is sending to us so we can quote the data he's basing the pressure force thresholds on

• COWORKER COMMENTS:

  • Wire and sensor positioning was bad in one of the finger cots (likely was positioned incorrectly during setup)

  • Velcro strap might not be tight enough on the forearm though they might wrap a towel under it to increase tension and comfort)

  • The overall feeling of wearing the glove is good, it's not super obstructive and it doesn't remove touch sensitivity

  • Was very skeptical about it working since he couldn't try it out but is excited for the future

Instructor Comments from Last Meeting and Actions Taken to Address these Comments  (indicate date of comments and if via email or in person)

•  Can we run two different data feeds from the gloves? (We can run one, but two is iffy and we may change the scope to have only one glove)

• The module on the forearm has a lot of dead space that can be reduced (The modules have been redesigned to be more efficient with space)

• Buy a wire connector (A Hirose wire connector and receptacle has been ordered and should arrive soon)

Comments from Other Students in the Class (indicate date of comments and if via email or in person)

• N/A

Risks and Areas of Concern

• PCB has a few mistakes on it, might be okay to operate for now, but definitely needs a redesign for future use

Resources or Information Required but not Available

• N/A

Schedule

• We are either going to present to Dr. Chang Friday of week 10 or Finals week BEFORE the poster presentation

• Theres a bit of scheduling conflicts because Dr. Chang is going to a conference next week

Budget (list amount spent and amount remaining)

• Budget is around $900. Theres a chance of going over due to the mishaps with the PCB and ESP32

Progress on Report and Webpage

·       Report has been heavily edited but will need more once we get a polished finished product

·       Webpage was slightly updated but will need a huge over-haul before end of week 10