An Arduino-Based Experimental Setup for Teaching Light Color Mixing, Light Intensity Detection, and Ambient Temperature Sensing.

This article focuses on an Arduino microcontroller-based multifunctional experimental setup designed for teaching light color mixing, light intensity detection, and ambient temperature sensing using a tricolor red-green-blue (RGB) LED, a photoresistor, and a thermistor. The system integrates these three topics into one portable platform with intuitive controls and real-time digital displays, making it suitable for high school and college physics education. Compared to previous single-purpose Arduino experiments, this setup allows simultaneous exploration of multiple sensor-related physics concepts and provides detailed guidance on circuit design and measurement interpretation. The study highlights the setup's expandability for additional sensors and applications, and notes positive feedback from its use in high school courses over three years.