PLC Escape Puzzle Game Kelly Roswell Project Mentor(s): Lad Holden
This senior project focuses on the design and implementation of an interactive, PLC-based gaming system built into a fully functional PLC cabinet. The system brings together six pushbuttons, four toggle switches, and four indicator lights to create an engaging, time-based user game experience. Programmed using Rockwell Studio 5000, the project highlights how control and logic systems can be applied in a creative, user-focused way. A key feature of the system is the light-sensing circuit, which uses a photodiode paired with an NPN transistor to detect changes in light. The circuit was first developed and tested on a solderless breadboard to confirm proper operation. After successful testing, it was redesigned and transferred to a printed circuit board (PCB), improving reliability, durability, and overall efficiency. The completed PCB is mounted directly on the front panel of the PLC cabinet, allowing it to integrate smoothly with the gameplay. The design process was guided by knowledge gained from electrical engineering coursework, such as PLC Applications and Instrumentation. These principles and concepts helped ensure reliable logic, efficient circuit design, and seamless communication between hardware and software. The final game challenges users to react to visual and physical inputs under time pressure, creating an engaging experience that tests quick thinking and coordination. Overall, this project demonstrates a creative application of PLC-based control systems beyond traditional uses in industrial systems. Presentation Type: Poster Presentation (May 21, 9:30am–3:00pm) Keywords: Electrical Engineering Technology, Programmable Logic Controller (PLC), Interactive, With the diversity of tools for automating circuit board production ever expanding, Central Washington University’s Electrical Engineering Technology Department needed access to a new tool: a Surface Mounted Technology (SMT) pick-and-place (PNP) machine. This project retrofitted a Creality CR-10 Pro V2 3D printer and followed a similar modular design philosophy to the department’s prior ATLAS robot retrofits completed in 2020. Controlling the machine is a National Instruments (NI) MyRio, which ensures compa tibility with current curriculum and ease of use for future students. The design uses four NEMA 18 stepper motors to the X, Y, and Z axes, and one NEMA 11 motor to control the theta axis, which enables precise part placement on a printed circuit board (PCB). Motion is controlled through a hybrid backend consisting of gcode and a custom LabVIEW program with a dedicated frontpanel interface, which allows students to control the placement of parts placement. The machine’s design and performance targets are in accordance with IPC9850, the industry standard for Surface Mount Placement Equipment Characterization, which ensures that the prototype is consistent with current industrial regulations, standards, and practices. In contrast to industry standard machines that use both feeders and matrix trays, this prototype relies exclusively on matrix trays. This choice intends to simplify the design while keeping functional capability. The final product resulted in a cost effective prototyping platform that will aid future students in their projects. Presentation Type: Poster Presentation (May 21, 9:30am–3:00pm) Keywords: Electrical Engineering, Robotics, SMT SOURCE Form ID: 88 Creative, Control System SOURCE Form ID: 81 SMT Pick and Place Machine Elliot Stern Project Mentor(s): Lad Holden, Jeff Wilcox, Greg Lyman, Peter Zencak
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