P13321: Levitation Clock/public/MSD I/
Table of Contents
- Mapped customer needs to Engineering Specifications
- Picked preliminary team roles
- Developed customer needs and problem solved
- Worked on functional decomposition
- Worked on concept generation
- Fine-tuned Engineering Specs
- Created Team Values and Norms
- Updated EDGE
- Concept Selection from brainstorming session in Week 2
- Began high-level discussion of System Design
- Updated Values and Norms
- Updated Customer Needs/Eng. Specs
- Risk Management/Risk Assessment
- Developed Project Plan
- Began discussing architecture and systems interfacing
- Welcomed James to the team
- Evaluated new concept sketches from James
- Created Pugh matrix for concept drawings
- Selected base concept (binary clock implementation)
- Prepared for and Performed SDR
- Updated materials to reflect any changes suggested from SDR
- Discussed System Architecture
- Refined frame concept drawings
- Updated Project Plan and added in important dates
- Began preliminary coil testing
- Bench-marked Hall Effect Sensors
- Defined System Architecture
- Chose microcontroller
- Eliminated need for position feedback sensors
- Chose final frame design
- Bench-marked new coil (from 600 Ampere-turns to 1200 Ampere-turns). Benchmark was successful, levitation of 1 to 1.5 inches was achieved (height depended on size of object and amount of current through the coil).
- Began discussion of potential coil driving methods (IGBTs a likely option).
- Noted that a pulsed current could potentially achieve greater effective levitation height with the same or less power consumption. More testing needs to be done.
- Began work on all circuit design
- Began work on frame design
- Discussed mounting points for PCBs and other objects within frame
- Built new coil with more turns for benchmarking (resistive drift with temperature too great, decided less turns would be better at 700mA - 1.5 inch levitation height).
- Prototyped and verified operation of User Interface circuit
- Began PCB layout of User Interface circuit
- Began organizing User Interface BOM
- Created preliminary solenoid mechanical drawing
- Created wiring diagrams for all systems (needs some revision)
- Mock frame built out of foamcore.
- Opted to use all wood frame rather than worrying about concrete (allow more mounting options).
- Determined final size of frame to properly fit coil and all components.
- Created spreadsheet to assign and outline tasks needing completion by DDR.
- Began work on Minutes Display and Hours Display prototypes.
- SDR Navigation