This paper describes the experiences and lessons learned from one of the PBL (Problem-based Learning) projects, a simple test-bed for building simulation study from modeling to control. A problem about how to enhance the understanding of building simulation skills and expertise, and hands-on experience from modeling to advanced control by using a simple test-bed is raised by a group of four graduate students. The aim of the project is to reduce the gap between textbook knowledge and real application. As the course progresses (offered with a weekly three hours), a simple prototype (rectangular EPS box) has been developed with a halogen lamp inside to emulate a convective/radiative heating system. The PBL case study consists of five steps: (1) mathematical modeling of the EPS box with lamps, (2) development of a state-space simulation model for the given EPS box in LabVIEW, (3) calibration of the simulation model if a significant gap between the simulation and measurement exists, (4) application of an advanced control to the box, (5) realization of web-based user control interface (either by a standard web browser or smart phone). In the paper, the aforementioned five steps are addressed with the lessons of modeling, simulation and control which are learned from this PBL case study.