P19305 Build & Test Prep

Your website should document your journey through MSD, so include work-in-progress as well as latest results. Use pdf's for display whenever possible so that information is easily viewable without the need to download files and open applications. (Your EDGE file repository should still contain original editable files).

All template text must be removed prior to your Build & Test Prep Review

Team Vision for Build & Test Prep Phase

During this phase we planned to evaluate where things stood after the summer and establish what components still needed attention before production. We planned to meet with various outside parties to get further insight on the tasks ahead so we could have a better idea of how to plan.

This past week we met with Mike Bufflin as well as our industrial design member Sam for suggestions on board design and manufacturing. Sam, our industrial design major cleaned up the model from before the summer break. Matt met with Mike Bufflin and he suggested that we talk to the EVT club for suggestions on building custom battery packs as they have done this in the past. Additionally the stock for the rails for the folding mechanism was ordered as well as the bearings needed for a prototype.

The picture below is the state of the model at the end of last semester

The image below is the current state of the same model after revisions by Sam

Recess in tail for eventual LED installation

Bottom rail of folding mechanism added to current model

Pictured below are the top and bottom of the Motor Control board PCB that was designed over the summer and that is currently awaiting verification:

Top view:

Bottom view:

Test Plan Summary

Use your test plan to summarize test results and assess effectiveness of test plans to unambiguously demonstrate satisfaction of the engineering requirements

Instructions

Ensure test plans are in place
Ensure that all applicable test standards have been cited (e.g., ASTM)
Ensure all ordered materials have been received
Ensure team has space and equipment necessary to begin building and testing

Risk and Problem Tracking

Risk Category	Risk	Cause	Effect	Risk Prevention	Contingency Plan	Period Until Switching to CP	Lead Time	Likelihood	Severity	Importance	Owner(s)
Technical	Folding Mechanism Roadblock	Complexity in Design and Material Scarcity	Can't integrate all essential parts and can't proceed with the design.	We build a functioning prototype without a folding mechanism (mule).	We design a different folding mechanism into our mule based on hinges.	2 weeks	6 weeks	9	9	81	All
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		Buying Trucks	2 weeks	6 weeks
Technical	Hanger Experiences Bending	Too much weight	Bending/Warping		Buying Trucks	2 weeks	6 weeks
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	6 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	No contingency available at this time.	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	3 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	3 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	3 weeks	N/A	1	3	3	Tanvir M. Connor F. Erik L.
Safety	Overall integrity of collapsible parts	Weak focal point	Collapsible mechanism does not have a long life span and the board is damaged after few uses	Determine the best and most applicable collapsible mechanism.	Hinge system	3 weeks	N/A	1	9	9	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	3	3	9	Deirdre A.
Resource	Customer manufacturer quality and accuracy risk	Bad quality deliver	Low quality product	Make sure to order from reputable manufacturers.	Change suppliers	3 weeks	6 weeks	1	9	9	All
Resource	Lack of experienced riders to test prototypes or data collection	Lack of exposure to longboard riding	Lack of essential knowledge on the design of the longboard	Have a team meeting for instruction on how to ride the longboard	Interview experienced riders	3 weeks	N/A	1	1	1	Erik L.
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	3	3	9	All

If you have risks that have manifested themselves as problems, begin problem tracking.

Design Review Materials

Include links to:

Pre-read
Presentation and/or handouts
Notes from review
Action Items
Budget/BOM - https://docs.google.com/spreadsheets/d/1lo3krKenbHWY07klsBIli68aJ11JaUqpJNBVPPbh9EY/edit#gid=2026222267

Plans for next phase

https://wiki.rit.edu/download/attachments/184255715/MSD2%20Schedule%2009-12-2019.pdf?api=v2

By next phase we want to have all PCBs designed and sent out quotes. Battery pack designed and in production. Semi-functional prototype of deck design under construction. Full integration of electrical components in board assembly model. Truck design sent out for quote.