Overview of Status of Analysis, Design, Fabrication, Tests, etc.
All tubing components ordered with the exception of 3-gate valve
Liquid container adapter 1st iteration performed
Fabrication of solid dispenser underway
Beginning design of stirrer / lid
Beginning integration of electronics
Accomplishments from Previous Week
1st print, assembly, and testing of liquid container adapter completed
Issues identified:
Improper fit (not sliding fit)
Incorrect internal threading on adapter cap
Successful facets:
O-ring dovetail groove
Correct spring chamber dimensions
Assembly of 1st iteration solid dispenser done
Issues identified:
Excessive friction from solids jamming
Proposed solution:
Using an intermediate material for sweeping
Pseudo-code for control algorithm written
Research into acrylic feasibility in lid / stirrer application
Master WBS created for next two weeks: prototype DUE (for StartR program)
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Finish liquid container adapter (Howard)
Finish base upon which liquid container adapter sits (Howard)
Includes attachment mechanism to aluminum extrusions
Test overall liquid container assembly (Howard)
Fix jamming problem in solid dispenser and ensure that both tea / masala dispensers are ready to go by next Monday (Michael)
Design and fabricate the stirring / lid mechanism by next Monday (Michael)
Implement idea for easy meshing between gears when inserting carafe
Test tubing assembly - does water really clean out the milk system (Edwin)
Create CAD of overall assembly including piping (Edwin)
Begin implementing Arudino code and electronics in parallel with all of the above developments (Pablo)
Keeping big picture in mind
Systems engineer role
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
No meeting last week (4/20-4/24)
Meeting on 4/27:
All components to be done by next week
Parallel work to be done
Pablo / Edwin on electronics and code
Howard on liquid mechanism / base
Michael on solid mechanism / stirrer
DEADLINE for prototype: 5/10
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Begin building as fast as possible
Every component current in the queue
Power strip is fine for prototype
Investigate the usage of stock component for liquid container valve
Decided to pursue our own design since there would still need to be design work done around other people's design
Not guaranteed to work and many measurements would need to be made since no information is readily available online
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
N/A - no comments made since last meeting
Risks and Areas of Concern
Greatly accelerated pacing now that a hard deadline has been set
Internal threads being correct fit on liquid adapter cap
Design for easy meshing between stirrer and main machine
Integration of electronics and code
Debugging
Jamming in current solid dispenser
Resources or Information Required but not Available
Talk to Chris Cassidy regarding extra acrylic for lid/stirrer and liquid container base
Schedule
Ultimate upcoming milestone:
Sponsors' StartR program requires finalized prototype in TWO WEEKS
WBS implemented
Daily log implemented
Daily meetings to be held from 4/28 until prototype finish
Budget (list amount spent and amount remaining)
Spent: $239.54
Remaining: $760.46
Progress on Report and Webpage
Compilation of information for first draft report to begin today (4/28)
Webpage weekly report updated
Further details to be added through this week (e.g. front page, members' profiles)
Budget document to be updated on the website this week
Separate google drive spreadsheet being updated instead of website's