Build & Test Prep
Table of Contents
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 PhaseSummarize:
- What did your team plan to do during this phase?
- What did your team actually accomplish during this phase?
Test Plan Summary
Motor CurrentThe stall current of the DC motors needed to be determined in order to purchase proper circuit breakers. In order to achieve this one of the three motors was stalled at a low voltage. The voltage and amperage obtained was plugged into the following equation.
Operating Stall Current = Operating DC voltage x Measured Stall Current / Measured Stall Voltage
With a measured stall current of 2.3A at 1.2V and an operating voltage of 12V, this produces a stall current of approximately 23A. Using this value it was determined that two 15A circuit breakers were needed for the two auger motors and one 20A circuit breaker for the grinder motor.
After discovering the maximal current on the motors the following chart was used to find the appropriate gauge wire for the motors. Using the graph, the current of the motors (20A), and assuming that the length of the wire will be ~2 feet, a 14 gauge wire was deemed appropriate.
Grinder QualityThe grinder is on of the main subsystems in the Robocomposter. To achieve high grind quality and assurance of throughput a test procedure must be developed. The following document provides a detailed performance evaluation of the grinder. Grinder Test Procedure
GUI (RPI) FunctionalityThe Graphical User Interface (GUI) will need to be tested on functionality. To be able to, when used, control every subsystem in the Robocomposter is based off of the Raspberry Pi, which is where the GUI will be held. This however is planned during the latest stages of testing; when the Robocomposter is built. The test procedures are as follows. GUI RPI Test Procedure
Auger FunctionalityThe Augers will be moving various materials through the Robocomposter. To test this thoroughly one must use a matrix of different materials that are the result of the grinding process. Different loads will be input to give how much the augers can move and during testing motor current will be watched for safe current pull. The test will follow as shown in this document. Auger Test Procedure
Risk and Problem Tracking
Risk Management here
Design Review MaterialsInclude links to:
- Presentation and/or handouts
- Notes from review
- Action Items