Overview of Status of Analysis, Design, Fabrication, Tests, etc.
Major components designed and CAD created
Size reduced and design made more compact
Ready to fabricate "wedding cake" structure
piston issue resolved.
Reconsidering Sparkfun board
Accomplishments from Previous Week
Designed and 3D printed battery enclosure
Designed piston-actuator connection
Decided to reuse Scripps dynamic o-ring piston structure (no need to design dynamic double o-ring seal again)
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Assemble acrylic housing - Doris
Manufacture inner "wedding cake" structure - Duncan
Manufacture the piston - Zach
Decide on chip options and order - Hugo/Michael
Proof of concept experiments
Actuator force test - Zach/Duncan
O-ring test - Hugo
Waterproof housing pressure test - Doris
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Reconsidered chip option, recommended Arduino Zero (4/25, person)
Arduino Zero researched as potential component
Discussed piston placement and waterproofing (4/25, person)
Designed piston to press fit onto actuator, decided to repurpose the o-ring system from the old project for piston waterproofing
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Concerns about piston o-ring, suggested (4/19, person)
Decided to adopt the o-ring system from the old design due to ease of implementation, proof of success, and affordability
Limiting the lateral motion of the piston (4/19, person)
Press fitting a specially designed piston to the actuator and securing with a bolt through the holes on the actuator
Allowing for slight adjustment of piston position to align with the hole in the housing (4/19, person)
Using slots or larger holes to attach the actuator to the "wedding cake" to allow for alignment, then lock down with washers
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
None
Risks and Areas of Concern
Ordering problems - unable to process certain orders
Need to contact Scripps fiscal manager
Waiting on parts will limit time to spend on Proof of Concept presentation
2 orders went through Roxanne but Ian brought up some concerns
Running behind schedule for Ghantt Chart
Resources or Information Required but not Available
Large number of our orders
Schedule
Testing water tight enclosure and ALL components on expedited schedule once they come in
Start coding once the controller comes in
Updated Gantt chart.
Budget (list amount spent and amount remaining)
Spent: $1,663
Remaining: $337
Progress on Report and Webpage
Completed Impact on Society portion
organized website resources and files so they are in corresponding sections.