Parts List

As a team, we operated with the bounds of our budget very successfully, making the most of what we were allocated without having to dip into our own pockets. A final parts list including the quantity, brand, model, description, and cost of each part is provided at the bottom of this page. Below is summary budget table broken down by subsystem.

Budget Table

Subsystem Purchase Cost

Adhesion $394.46

Stepping $248.14

Locomotion $180.00

Cleaning $48.68

Electronics/ Controls $272.40

For our window washing robot, our total project cost came out to $1143.68. We were quite happy that we were able to stay under the $1250 budget while also being able to purchase everything for the system. In the above table, broken down by subsystem, our robot’s adhesive system proved to be the most costly with our eight high end vacuum cups being responsible for the bulk of that cost. When we started this project, we were able to use several vacuum cups for past projects that worked adequately for simple, light iterations of our window cleaner. However, when our robot became a heaver, more complex system, some of the past projects’ poorer grade vacuum cups began to prevent the entire system from functioning properly. This meant our team had to purchase five more high end cups to accompany the three we already had. A unexpected cost, this desperately needed upgrade took a large chunk out of our remaining budget, something we had to account for in future design decisions and purchase planning.

In the final weeks of the semester, we were aware that we were closing in on the budget cap for the project which caused us to make some informed materials decisions. In continually testing our robot for the final demos and public presentation, we were breaking many acrylic components, leading us to consider buying several fresh sheets to ensure we always had the material we needed on hand. We did, however, restrain from making this purchase, knowing we only had a small amount of budget remaining that we wanted to keep in reserve for emergency purchases and the expected high shipping prices. To protect our safety net budget and fulfill our acrylic needs, we utilized the numerous scrap piles in the MakerSpace that were able to provide the material we needed to keep testing.

Final Parts List