156B Week 3
Overview of Status of Analysis, Design, Fabrication, Tests, etc.
Tested pressure drops under varying valve conditions
Began designing cam valve and ordering parts in order to build and test
Accomplishments from Previous Week
Can control valve pressure readings using potentiometer and LCD screen eliminating need for computer
Verified viability of constriction valve method over needle valves
Ordered parts to build valves
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Finish designing valves and submit request for approval of additional parts (Basil, Josh)
Print and test valves (Josh)
Develop code and electronics behind the valve (Obed, Jeffrey)
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
All comments via Zoom meeting on 4/15
Future presentations should explain the aim of the project before diving into details
Likes a valve design of something that is modular so we can affect a wide range of tube lengths by simply swapping out parts
Keep things streamlined (avoid bulky design) and nearly indestructible
Received approval for ordering parts, provided a variety of options for his approval
Comfortable with either of our designs, left choice to us
Met with Steve Roberts and made our final decision
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
All comments from Zoom meeting on 4/10
Get inputs on types of motors
Posed question to Lasheras, Toni, and Steve Roberts
Settled on cam valve proposed by Prof Delson powered by servo
Risk Reduction of determining forces involved in deforming the tube
Tested and documented forces and utilized results to determine required motor torque
Should definitely be spending money, could be duplicating setups so all of us can do stuff from our homes
Get Toni's approval if we cannot get in contact with Lasheras
Meet with Steve Roberts
Met on 4/16 via Zoom
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
Comments via spreadsheet from Anem on 4/15
Slides are very text heavy
Good diagrams
Need to spend more time on issue of pressure drops because it's a complex problem
Overall seems like we did well but could do a better job explaining overall
Risks and Areas of Concern
Motors drawing too much current we might burn something out
Using second microcontroller solely for motors
Resources or Information Required but not Available
n/a
Schedule
Printing and testing valves
Integrating valves into device
Budget (list amount spent and amount remaining)
Spent ~$300 on filament, motors, power supply, tubing, etc
Progress on Report and Webpage
New reports on tubing, constriction valve, motor choice
Updated internal pages