156B Week 4
Overview of Status of Analysis, Design, Fabrication, Tests, etc.
Initial mechanical design-->nearly complete
Myoelectric testing-->complete
Accomplishments from Previous Week
Met with Steve the prostheticist and got a cast of Gabby's arm (MAE team)
Met with family, tested MyoWare sensors, and presented our design (MAE+EE)
Reorganized tasks to better use our time (MAE)
This update (Maris)
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Order ECE voice recognition items (Maris)
Finish CAD of hand + printing (Erik)
Finish CAD of elbow + printing + lasercutting (Mike)
Finish CAD of socket/cast (Estelle)
Finish CAD of basic forearm section with pulley routing and electrical components + printing (Maris)
Finish CAD of wrist + printing (Estelle + Maris)
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Feb (Gabby's mom) definitely seemed interested in having a movable wrist (4/18) so we are now designing a two position wrist
Steve indicated that our approach is very similar to what he would have done and made clear he would be happy to help us in any way (including making the positive mold and socket and possibly providing nicer, prosthetic grade myoelectric sensors and electrodes) (4/18)
James (dad) liked the design cleared up that utility is more important than her ability to put it on herself but would still prefer it be as easy for her to put on as possible, also mentioned waterproofing (4/20)
Mark suggested that having a motor controlled elbow may be better as she has very limited musculature even if we were to make a positive feedback elbow assist (4/20) as such we are designing both a basic elbow assist using springs and a mechatronic design with motors
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Shoot for the moon so we are now doing the hand, wrist, and elbow
Time is more important than money and buy backups so we bought more motors (including a backup motor) and will be paying more money to get the ECE stuff shipped faster
Myoelectrics will probably fail so focus on voice control; Professor Tustaniwskyj was 100% right, they failed so we are focusing on voice control
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
Risks and Areas of Concern
Voice Recognition (particularly bulkiness and issues of others interfering)
Controls (aka bulkiness/weight vs ease of use)
Wrist (how do we make it both easy for her to move and make sure it locks in place)
Waterproofing/ease of cleaning
Resources or Information Required but not Available
Are the Otto Bock myoelectric sensors able to pick up Gabby's signals (we know they'll be significantly better but not sure if that will be enough to work for Gabby)
Schedule
Order ECE voice control stuff (4/23)
Meet with Steve again (4/27) to get positive mold and begin the process of getting a test socket (MAE)
Initial prototype complete (4/30)
Budget (list amount spent and amount remaining)
Initial budget: $2200
Total spent: $248.84
Budget remaining: $1951.16
Progress on Report and Webpage
Report:
Webpage:
Got an actual picture of Gabriella