RIT will permanently shut down the RIT Wiki (Confluence wiki) on February 2, 2024. Review the Wiki Shut Down Overview for information on alternative tools, exporting content from the wiki, and other FAQs.
Team Vision for Final Demo and Hand Off
Our team's plan for this phase were:
Complete assembly of all electronic boards with proper components.
Have lightning talk slide finished and submitted to MyCourses.
Complete a team self-assessment with objective evaluation of successes and failures.
Have a completed wiki with all final products and testing results.
Be able to demo the hands-free board.
Decide on design for the trucks and have the material bought with the trucks manufactured.
Have board finished with coating.
Start and Finish technical paper for the project.
Finish poster with notes from draft submitted.
Test electronics for verification.
Our team accomplished during this phase:
- Completed lightning talk slide
- Manufactured the trucks
- Cut out a foam version of our board
- Finished technical paper for the project
- Revised and submitted our poster based on received feedback
- Finished code for motor controllers and started code for acceleration boards
- Assembled and welded the battery pack.
Final Project Documentation
This public Github repository contains the motor controller code, PCB files, electrical BOMs and various other software and electrical hardware related document.
| Project Management | Design Tools | Design Documentation | Implementation | Presentation & Dissemination |
|---|---|---|---|---|
PRP Schedule Risk Management |
Risk Management
Strike through - Items no longer applicable due to scope reduction
Found below is the risk assessment table from the integrated system phase. Risk should ideally be at zero given that this is the final phase, however due to the unique circumstances of this project and the lack of an operating final prototype that is not the case. A brief commentary of the listed risks is given below the table and what their current status is given the state of the project as if it were to continue past the completion of the Senior Design course.
| Risk Category | Risk | Cause | Effect | Risk Prevention | Contingency Plan | Period Until Switching to CP | Lead Time | Likelihood | Severity | Importance | Owner(s) |
| Technical | Deck can't fit all the Necessary Components | Too many large components in too thin of a body | Functions may have to be demonstrated on separate testbeds | Design subsystems with the intention of integration but on separate testbeds to prevent roadblocks | Subsystems stay on seperate testbeds | 7 weeks | N/A | 6 | 5 | 81 | Erik |
| Technical | Failure of Force Sensors | Damage to sensing surface or blocked transmission of force to sensing surface | Complete loss of motor control/unexpected motor response | Thoroughly test force sensor installation | Use remote to control motors | 2 weeks | 6 weeks | 3 | 9 | 27 | Matthew G. |
| Technical | 3D Printed Base Plate Failure | Does not meet stress/impact requirements | Does not meet stress/impact requirements | Simulate stress requirements using an FEA analysis in solidworks | Buying Trucks | 2 weeks | 2 weeks | Connor | |||
| Technical | Hanger Experiences Bending | Too much weight | Bending/Warping | Simulate stress requirements using an FEA analysis in solidworks | Buying Trucks | 2 weeks | 2 weeks | Connor | |||
| Technical | Truck design failure | Trucks don't work as designed | Danger to the rider of falling and hurting themselves | Conduct tests of trucks over full range of speeds with differing loads. Redesign Truck Assembly | Buying trucks that are stable | 2 weeks | 2 weeks | 3 | 9 | 27 | Tanvir M. Connor F. |
| Resource | PCB design does not work | Lack of experience with PCB design. | Non-functioning PCB. | Get Eric's friend to verify design and make sure design follows general design of VESC | Purchase a second turn of a new PCB design. | 2 weeks | 6 weeks | 3 | 9 | 27 | Matthew G |
| Technical | Product failure or part malfunctions | Miscalculations during design process | A non-functioning product | Mechanical Design Leads must be consulting each other | Consult with Mechanical Engineering Professor. | 2 weeks | N/A | 3 | 9 | 27 | Tanvir M. Connor F. Erik L. |
| Technical | Control system causing unexpected outputs (malfunction) | Incorrect inputs were put in the system | Incorrect Outputs/System Failure | Follow microchip whitepaper exactly and verify code on controller func | Have a micro-controller system expert look over the system | 0 weeks | N/A | 1 | 9 | 9 | Matthew G. |
| Technical | Electronic components protection | Exposure to external environmental factors (water,rocks, etc.) | Damage to the battery and other components | Ensure proper location and protection of electrical components. | Have a guide for a particular environment that must | 0 weeks | N/A | 1 | 3 | 3 | Kristin O. |
| Safety | Pinch points in the mechanism | Folding Mechanism | Damage to hands and fingers of riders. | Proper outlined guide for Hand Placement | Wear protection gloves | 0 weeks | N/A | 1 | 3 | 3 | Tanvir M. Connor F. Erik L. |
| Resource | Lack of additional funding (Budget) | The budget we were given was too low from the outset | Unable to finish design or a low quality product | Get budget increase | Cut costs where necessary and/or fund with personal funds | 3 weeks | N/A | 0 | 3 | 9 | Deirdre A. |
| Resource | Team Members Being Absent | Exceptional Circumstances (Sickness, etc.) | Falling behind on deadlines and not being able to create longboard. | Make sure at least one person on the team has a good understanding of what the abstentee was doing, | Assign the another person the absentee's task depending on how important the task is | 3 weeks | N/A | 9 | 3 | 9 | All |
| Identified Risks from Integrated System Build and Test | Current Status of risks as of December 10th, 2019 |
|---|---|
| Deck is unable to fit all of the necessary components. | Risk is still present, foam board is unable to fit all parts and wood board is not manufactured to verify components fit. |
| Failure of Force Sensors | Risk is still present, testing of force sensors was not completed. |
3D Printed Base Plate Failure - Does not meet stress/impact requirements. | Risk mitigated, base plate and trucks have been assembled and tested on another longboard. |
| Hanger Experiences Bending | Risk mitigated, base plate and trucks have been assembled and tested on another longboard. |
| Truck Design Failure | Risk mitigated, base plate and trucks have been assembled and tested on another longboard. |
| PCB Design Failure | Risk is still present, testing of PCB was not completed. |
| Product/Part Malfunctions | Risk is still present, fully assembled/integrated subsystems were not achieved. |
| Control System causing unexpected outputs. | Risk is still present, fully assembled/integrated subsystems were not achieved. |
| Electronic Components Protection | Risk is still present, fully assembled/integrated subsystems were not achieved. Therefore testing of board under various environmental factors was not possible. |
| Pinch Points in Mechanism | Risk is mitigated due to the simplification of design resulting in a lack of the collapsible feature. |
| Lack of Funding | Risk mitigated, budget increase was approved and all necessary components were purchased. |
| Team Members Being Absent | Risk mitigated via team discussions of expectations prior to completion of semester, also mitigated due to lack of further meetings at this point. |
Remaining Work:
- Assemble a board out of wood
- Finish code for the acceleration board
- Reorder motor controller boards with a more appropriate copper thickness (3oz) and then reassemble them.
- Rebuild the battery pack so that the connections between segments are nickle bus bars of an appropriate thickness for the current they'll take
- Wire all electrical systems together
- Iterative testing of the full electrical system to determine proper values for control parameters, FSR calibration,
speed reference generation, communications, hardware and software fault handling
Plans for Wrap-up
Finish up all documentation on confluence and assemble as much of the board as can be done before the final phase and gate reviews.
3 Week Plans
Deirdre Arcand Final 3 Week Plan