This research aims to investigate the effect of STEM learning on STEM literacy in learning electricity concept. The method used in this research was Weak Experimental method. The quantitative data of this research is gained through objective test, while the qualitative data was gained by observation sheet. According to the analysis of the study, it is obtained an improvement in students' STEM literacy, especially in technology, engineering, and mathematics literacy while students' scientific literacy shows negative improvement. The increase of students' science, technology, engineering, and mathematics literacy obtained through normalized gain systematically by-0.02, 0.22, 0.12, and 0.03 categorized as low improvement. Even though students cannot relate the scientific concept occurs during the experiment, students are excited to conduct the project using Arduino-Protoboard experiment since they had the experience to use the latest kind of technology.