The temperature control lab (TCLab) reinforces process feedback control with real data. The TCLab hardware consists of an Arduino® shield that fits onto a standard Arduino Leonardo microcontroller. This video highlights a few examples of how the TCLab can be interfaced with and run from Python, Java, and MATLAB® / Simulink. The interactive modules reinforce conceptual understanding of feedback control. The TCLab module demonstrates many process control basics such as On/Off Control (similar to a home thermostat) and Proportional, Integral, and Derivative (PID) Control (similar to a car cruise control). The lab is inexpensive and small enough to give one to each student in the class for active learning exercises.