Key milestones

Key milestones, main tasks, and outputs, including a comprehensive list of all completed tasks

1. Created a schedule and Gantt chart for the semester.

2. Presented the schedule to the class.

3. Created the backbone for the team's website, as well as periodic updates.

4. Replaced the 5V and 12V battery packs with DC-DC converters powered by the robot's 24V supply.

5. Determined requirements and specifications for the arm.

6. Ordered an arm that fit the specifications.

7. Assembled the arm (it came in parts).

8. Compiled a design review and presented it to the class.

9.  Designed a base to elevate the arm to reach the elevator buttons.

10. Assembled the base by cutting wood to length and attaching with screws.

Completed Tasks

Research, Requirements & Specifications, and Important Decisions

One of our very first tasks was to describe the requirements and specifications for the arm, so that we could ensure that we built/purchased the right one. We had to consider several factors. The most important requirement was that the arm had to be robust. This capstone project is a multi-year project, so whatever we create needs to last. The second consideration was that the arm should be strong enough to press the elevator button. Finally, the arm had to be long enough to reach the elevator button.

Once we had these requirements, we determined that buying an arm would be the most robust solution. NAU has some arms for robotics classes, so we decided to test one of these. We borrowed it from the robotics instructor and determined if it could press the elevator button. After successful research, we decided to move forward with the purchase.

The arm we purchased still needed a boost from the platform of the robot so we needed to build a taller platform. To determine the needed height, we measured the height of elevator buttons, robot platform, and length of the arm. After designing a simple rectangular platform, we built it out of wood and screws.