Customer Handoff & Final Project Documentation
Table of Contents
Team Vision for Final Demo and Handoff
During this phase we plan to...
- Complete entire system testing
- Incorporate Bluetooth controller into device successfully
- Complete final poster
- Complete final technical paper
- Aesthetically clean up the device for Imagine RIT
During this phase we accomplished to...
- Complete testing
- Completed final poster
- Completed 75% of technical paper
- Submitted final poster and video to ARM competition
- Rewired entire electrical subsystem to reduce connectors and issues with connectors coming apart
- Bluetooth is working to communicate between PWM controller, slide potentiometer, and motor.
- Successfully created Bluetooth controller
- Imagine RIT 10th Anniversary, 7th Annual RIT ARM Developer Day Student Design Contest 1st place finishers
- Cypress Maker of the Month selection for July
Updated Bill of MaterialsThe following image shows the amount our team spent this semester given our budget of $500.00. It also shows the total amount used in the production of our final device, which incorporates the cost of the materials used from P16007 such as the batteries, motor and gearbox. The ideal value was $1,500.00 with a marginal value of $3,000.00 so we are only slightly above the ideal value. Ideally this value would be less, but we had purchased extra material during the different phases.
Test Results Summary
As it can be seen in the image above, all of our test results floated right around the ideal value set during MSD I. Ideally we would like to have the cost and weight of the device to decrease even more, but in comparison to P16007, the weight, size and wiring has been significantly reduced. Cost, weight, and size were our three biggest requirements we needed to meet and based on our results we believe these requirements have been met successfully.
Risk and Problem Tracking
Many of our risks have been eliminated based on the successful completion of our device as well as ensuring excellent electrical connections. The remaining risks mainly deal with some sharp edges on the device as well as the batteries dying or not holding a charge after a long period of use.
Final Project Documentation
- Technical paper - To be updated come 5:00pm (5/11)
Recommendations for future work
- The 7:1 inline gearbox provided by team P16007 was not ideal and produced a slight tilt for our attachment, which we nearly eliminated from our welded frame and attachment bar. We would have ideally used a right-angle gearbox to eliminate this weight unbalance, but this wasn’t possible with the allotted budget.
- Satisfying the speed requirement was initially a concern we had based on weight of the device and user as well as the torque requirements that had been calculated, but after assembly and testing of the device, the speed was proven to be more than fast enough. This speed could have been reduced, therefore, increasing the gearbox ratio from a 7:1 inline to a more common 10:1 gearbox ratio.
- Improve the communication between the slide potentiometer and microcontroller. The microcontroller appears to notice some dead zones in the slide potentiometer and causes some slightly jerky motions during movement.
- Continue researching ways to reduce cost and weight of the device as well as eliminating the slight tilt in the device from the weight imbalance.
- Additional improvements could be regenerative braking in order to slow down the wheelchair at higher speeds by converting the kinetic energy of the wheelchair itself.
Functional Demo MaterialsCustomer Handoff and Final Project Documentation Review Notes
Plans for Wrap-up
For the remainder of the semester we plan to...
- Complete technical paper
- Update Edge with all final project documentation
- Hand off completed device to customer
- Revise User Manual, Service Manual, and Assembly Instructions