Overview of Status of Analysis, Design, Fabrication, Tests, etc.
Determined System Layout, chose materials and fabrication methods (laser cutting, 3d printing, 8020 extrusions),
Accomplishments from Previous Week
Prototyped brewing module
Made plans to cut COTS grinder and interface to a water kettle with arduino control
Started developing new CAD for final design before proof of concept (Sebastian, Alec)
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Redesign brewing module, find and order parts, and assemble for proof of concept (Sebastian)
Create preliminary BOM (ALL)
Order water kettle, take it apart and interface with it (Phil)
Create system power supply (Alec)
Control pump with Arduino (Alec)
Finalize all components to order for heating module (Phil)
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Decided to stick with 1.6 L of water volume for heating module
Discussed quick disconnect vs. screw fro brewing module, feasibility of combining both
Discussed custom reservoir vs. kettle for use in heating module and accompanying pros / cons of each, decided to prototype a kettle / pump system
Decided to table PID control until after coffee can be made
Discussed cleaning issues, preventing machine from running when certain components were removed
Decided to build prototype for week 4 meeting using acrylic and 80/20
Brought up mixing concerns regarding filter placement and dilution issues, decided to make a custom filter by week 4
Action items: Install grinder, finalize kettle / heating / pumping design, create block diagram and build filter prototype
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
All of the following comments were made in person during week 2 presentations, Tuesday 1/15/2019
Solid state relay zero-crossing?
Use metric units along with english units
Use ‘inexpensive’, not cheap
Determine if you can find Temperature resistant tubing and fittings
Look at ebay for finding things like pumps for a short lead time (also made via email 1/16/2019)
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
‘Why not pump in water form the bottom?’ Because the coffee grounds would just float without being submerged. [In person during week 2 presentations, 1/15/2019]
Risks and Areas of Concern
Finding quick-detach fittings that can resist 95°C (200°F) is a challenge
Resources or Information Required but not Available
Schedule
Prototype design review Thursday week 3 (1/24/2019)
Finalize BOM by the end of week 3
Proof of Concept Prototype by Week 5 Friday
Budget (list amount spent and amount remaining)
Spent: $116.85
Remaining: $3,383.15
Progress of Report and Webpage
Completed Report sections:
Background
Review of Existing Solutions
Statement of Requirements
Deliverables
Title page
Appendix with Individual Component Reports
In progress:
Report "Impact on Society" chapter
Website
Home Page
Team page