156B Week 3

Overview of Status of Analysis, Design, Fabrication, Tests, etc.

• • Continuing on path of new design

    • separate heating containers for milk and water

    • separate heating components for brewing container

    • trying magnetic stirring 

      • also trying the pot minder

    • Shielding gate valve

    • no powder delivery or milk delivery system (user inputted)

Accomplishments from Previous Week

• • Off-the-shelf components purchased (containers, filters, heating, coffee makers)

  • looking into and purchasing necessary heating elements

    • testing current heating element

  • water flow testing (temperature at outlet tests)

Goals for Next Week (list names after each item). Use specific and measurable objectives.

• • Re-testing flow rate with new parts

    • re-confirm whether it is hot enough, and what the temperature will be from heating

  • assemble a magnetic stirrer 

    • using motor and a magnet

  • calculate and test the strength of the solenoid

    • necessary for opening and closing gate valve (prevent oversteeping)

Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)

• • 1/9/2016

    • Design solution has changed to more of a coffee maker-type product

    • not using milk or spice dispensers anymore

    • user inputs desired amount of milk and spice as opposed to everything automatic

  • 1/9/2016 actions taken

    • started researching into new design/finding proper components

    • still using gate valve to prevent oversteeping

    • user will have measuring cup for their milk included in product, user can use their own measuring cups for spice and tea (usually one teaspoon each)

  • 1/16/16

    • what components to buy for testing

    • sponsors worried about time left over because the first prototype (the previous 156b group) took about 4 weeks just troubleshooting

  • 1/16/16 actions taken

    • already sent first round of purchases to project manager (Anand), he has amazon prime and all our parts are prime eligible so we should get it soon

    • on track for our gantt chart, will be able to devote a lot of time when the parts arrive (in about two days)

Instructor Comments from Last Meeting and Actions Taken to Address these Comments  (indicate date of comments and if via email or in person)

• • Professor says to communicate clearly and explicitly with the sponsors, document all scope changes

    • all changes are made to gantt chart and are approved by their project manager to make sure that we are all on the same page

    • constant communication over whatsapp group message with their team (they recently added their electrical engineers on the group message so we can communicate with them as well)

Comments from Other Students in the Class (indicate date of comments and if via email or in person)

Risks and Areas of Concern

• • may need to allocate more time for construction and trouble shooting (sponsors are very concerned)

Resources or Information Required but not Available

• • will call manufacturers of coffee makers we bought to find proper power ratings and other necessary information

Schedule

• • Upcoming Milestones

    • starting disassembling and re-engineering of bought off-the-shelf products

    • validating stainless steel vs plastic brewing container

    • designing and assembling heating element for brewing container

  • Gantt Chart: Red area shows current step

Budget (list amount spent and amount remaining)

• • $1000 total

  • Spent: $67

Progress on Report and Webpage

• • Rough draft of report complete