156B Week 6
Overview of Status of Analysis, Design, Fabrication, Tests, etc.
Test socket received from Stephen at Hangar Clinic
Second iteration of design in progress
Accomplishments from Previous Week
Had design review for proof-of-concept arm (1st prototype)
Designed second iteration of fingers and palm (Erik)
Designed second iteration of wrist (Estelle)
Designed second iteration of elbow (Michael)
Designed second iteration of motor mounts (Maris)
Designed and ordered wireless joystick parts/controls/etc (Maris)
Ordered ball bearings, springs, motors, gears, pulleys, delrin,, step down voltage board (05/06)
Researched various tightening/fastening methods for socket (Estelle)
Soldered VR module and tested EasyVR shield using EasyVR Commander software and Arduino IDE (Andrew, Jess)
Made a no go decision on offline voice control option (All ECE)
Connected Raspberry Pi to Google Cloud Speech API demo (BongGeun, Patrick)
Building up the code to connect to servo motor (BongGeun, Patrick)
Researched how to connect the power button (All ECE)
Ordered Raspberry Zero and button
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Test fit socket on Gabby to determine optimal angle of rotation of elbow (Maris, Estelle, Michael)
Print second iteration of fingers and palm (Erik)
Print second iteration of wrist (Estelle)
Determine optimal fastening method for socket and start designing (Estelle)
Print/lasercamm/assemble second iteration of elbow (Michael)
Print second iteration of motor mounts (Maris)
Determine best option for battery (Maris)
If all necessary parts arrive, assemble and begin testing wireless button (Maris)
If time: Assemble all components together into semi-complete solution for test fit on Gabby -> either (05/11 or 05/18) (Estelle, Maris, Erik, Michael)
Test online Google Speech API option on Gabby (BongGeun, Patrick)
Connect Raspberry Pi to servo motors and establish a connection (BongGeun, Patrick)
Connect functioning power button to Raspberry Pi (Andrew, Jess)
Determine method to indicate battery level and order parts (Andrew, Jess)
Research portable wifi (All ECE)
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Mentioned it was nice to have all components be accessible through 3d printed files/components bought at Walmart/online (05/02)
This comment encouraged us to avoid custom machining components (i.e. wrist) and find alternative methods
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
How are you going to make sure the end solution won’t hurt her? ( in class, 04/30)
By testing, enclosing all moving components, being careful with the batteries
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
How are you going to make it durable? (in class, 04/30)
By making it out of strong ABS which is replacable, enclosing all moving components etc
How will she be able to rotate the wrist? (in class, 04/30)
By rotating the hand between her thighs (awaiting testing)
Risks and Areas of Concern
VR online testing -> will it pick up Gabby’s speech patterns?
Is the socket design optimal for Gabby?
i.e. will Gabby be able to “plop” into it or slip into it?
Is a harness needed?
Will elbow bend right?
Resources or Information Required but not Available
Schedule
Test fit socket and determine optimal angle of rotation of elbow (05/07)
Test fit 2nd prototype on Gabby asap (05/11 or 05/18)
Budget (list amount spent and amount remaining)
Spent: $676.81*
Remaining: $1523.19*
* = going to order a number of items tonight so this will likely change before the meeting on 5/7
Progress on Report and Webpage
Title page and team page updated with more info, sponsors, and visuals (05/04)
Report first draft completed (05/04)