This document presents our solution for the ASME pick-and-place design competition. In brief, the challenge is to collect balls from an arena and return them to a ‘home base’. The specifics of the competition are elaborated on within. The document walks through the design decisions that went into the prototype; the Goalkeeper concept that we ultimately landed on best solved the problems presented by the challenge statement as interpreted by our customer, Dr. James Jackson Potter. Several of the design choices were made by applying mathematical relationships, with the math and results included to illuminate our methods. We include a computer-aided design model that was used to plan construction, and an analysis of the device taking into account certain user impairments. We determine that the device is safe, and largely risk-free for even highly impaired users.
The final prototype is built out of plywood and PVC to minimize device weight. It has two drive motors and two servo actuators to enable the collection and deposition of the balls, powered by an Arduino Uno microcontroller. The operator uses a PlayStation 4 controller to remotely control the device, with a button assignment chosen to be intuitive to a firsttime user. Photographs of the prototype are included.
Mechanical Engineering Design Project (MEMS 411)
Self, Melanie; Tattersfield, Ben; and Emde, Joshua, "ASME Design Competition - Group H" (2018). Mechanical Engineering Design Project Class. 99.