AC-Duino Kit: Enhancing the Teaching and Learning Experience of Root-Mean-Square Current in Alternating Current through Arduino Microcontroller Application

Root-mean-square current in alternating current is an abstract concept that appears challenging to students in the absence of any hands-on experimental tool. Therefore, the AC-Duino Kit, utilising an Arduino Uno microcontroller and ACS712 current sensor, is developed and used in an experiential learning activity involving real-life household electrical appliances to enhance this topic's teaching and learning experience. Two-cycle action research was conducted on forty-six students undertaking a one-year matriculation program with data collected from document analysis, interview, and observation. The result shows that the students could relate root-mean-square current to power consumption, differentiate between heat and motor appliances, and relate peak current to electrical safety. The study confirmed that this activity could bridge the theoretical concept to real-life applications.