156A Week 10

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

• • Selected individual components to analyze

    • Marcos - Motor

    • Cory - Material (look into NinjaFlex material)

    • Jose - Sensors 

    • Ethan - Battery  (look into using 7.1V)

  • Generated design concepts on standardized template

  • Fabricated test bed from combination of bearings and 3D filament (ABS)

Accomplishments from Previous Week

• • Contacted developer of similar project (Bodo Hoenen)

  • CAD design of test bed

  • Printing of test bed

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

• • Continue research into components (according to names listed above for individual component analysis)

  • Fine-tune testbed

    • Find stand to hold arm in vertical position 

  • Prepare risk-reduction presentation (All 4 members)

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

• • Ensure device doesn't harm child (5/3, in-person)

    • Look into using linear motor which does not extend beyond a certain point 

  • Make device easier to put on (5/3, in-person)

    • Consider use of flexible 3D printed filament

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

• • Test bed is a wise idea. (5/5, in-person)

    • Followed through with development of test bed

  • Standardize design concepts (5/5, in-person)

    • Ideas for machine drawn on background of arm template

  • Find out where child's arm fractured (5/5, in-person)

    • Fractured on mid-shaft of humerus bone

    • This area is now the strongest area of his arm, so there is little risk of the device causing a fracture on his arm

risk of arms breaking when at 90 degrees

max will learn fast

shoulder pads 

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

• • None

Risks and Areas of Concern

• • Test bed accuracy

  • Keeping child engaged with project

    • Don't want him to lose interest

  • Keep range of motion confined within limits to prevent overextension

  • Ensure device does not cause skin irritation

Resources or Information Required but not Available

• • https://www.dev4x.com/myoelectric-robotic-assistive-arm

Schedule

• • Describe upcoming milestone

  • Update Gantt chart.

Budget (list amount spent and amount remaining)

• • Spent: $8.00 (bearings)

  • Remaining: $1,492.00

Progress on Report and Webpage

• • Report: Good

  • Webpage: Needs work (will add items when more is completed with project)