Build & Test Prep
Build & Test Prep Phase Review and Agenda
MSD 1 Post-mortemTake aways from MDS1: This was mostly covered in MSD 1.
- Asana very useful, Gantt process not
- Communication within team of primary importance
- Need to regulate when some talk too much or too little
What we plan to do differently this semester to improve:
- Cut out the Gantt Charts, shift to list and block
- saves on project manager's time and gives all team members easier access to plans
- Use Asana more heavily for task assignment
- Take more seriously the role of gatekeeper
- Switch review style to be more like DDR and less like MSD1 phases 1-3
- Be more aggressive in scheduling to finish before motivation loss
Design UpdateHopper Subassembly simplified, combined 3 parts into 1 simpler part:
Parts Received and Additional Purchasing
- Additional Purchasing:
- 3 more Arduinos
- 3 new relays
Waterjet UpdateWater jetted first set of parts:
- Upper Bracket
- Hopper Bracket
- "Octopus" (Water Jetting error, will be redone)
These parts still need some post-processing (Holes drilled, sharp edges broken, bends made), some of which has already been done.
Other Part Manufacturing Updates
- Roller sleeve: An adapter to connect motor to feed roller. Completed (see feeder sub-assy)
- Funnels: Planned for CNC Lathe by Josh Hilton.
- Feed Tubes: Planned for manual mill by Josh Hilton.
- 3D printed parts:
- Motor Cowl: Safety feature for agitator.
- Counting Rig: A device for validation, see test plans. Planned for Phase 2.
- Final Feed Block: To be done after feeder testing validation.
- Electronics Housing: To be done after electronics completed.
- Hopper Tube: Conduit cut to length. Completed.
- 80/20: Channel to be cut to length and assembled. Completed.
Assembly, Testing, and Prototyping
- Cardboard cut-out fit-test for mounting bracket
- Feeder system sub-assembly / testing: We have assembled the first iteration of the feeder sub-system and are preparing to test it.
- Electrical Assembly and Testing: Began assembly of electrical sub-system and testing components. All inputs (sensors) worked well, however when we were testing the motors the arduino broke (likely from drawing too much current). Just in case, we had already purchased additional arduinos, which are currently on order.
- ANSYS: Prepping for potential measurement, speaking with Dr. Ghoneim. However, it may be easier to determine agitator frequency empirically. Team will make this decision prior to the Phase 2 Review.
Test Plan SummaryThe test plans were completed in MSD 1. Full Test Matrix:
The live document is here.
Test Plan 1: Tests all primary requirements. Under each rod condition, run the device for 10 minutes 10 times. The counting rig shown below will create a time series, allowing us to measure both the average feed rate over a long period, and the distribution of delays between individual rods. It also confirms that the device stores sufficient rods and operates under that condition.
Test Plan 2: Confirms that device will stop and start under required conditions (RS422 signal from Vader level sensor)
Test Plan 3: Confirms that the device can be cold started in a reasonable amount of time.
Week 6 Subsystem DemoDemonstrate each subsystem working separately (not integrated)
- Demonstrate hopper and agitator dropping rods
- Demonstrate feeder subassembly feeding when hand-fed
- Demonstrate Mounting sub assembly complete and compatible
- Demonstrate Electrical sub assembly working proof of concept (not necessarily integrated yet)
Risk and Problem Tracking
Risk Assessment Update:
The team will use the MSD provided process and template.
There are no problems identified at this time.
MSD 2 plan:
Phase 2 plan: