Development of Arduino Uno-Based Doppler Effect Trainer with FC-04 Sensor and HCSR-04 Sensor in Senior High School

Students' understanding of learning materials will increase with the presence of teaching aids. This study aims to produce a product in the form of a Doppler effect demonstrator based on Arduino Uno with FC-04 and HC-SR04 sensors in high schools, as well as to assess the feasibility of the developed teaching aids and determine students' responses to the developed teaching aids. This research is a type of development research (RD) using the ADDIE development model. The research subjects consist of 2 physics education lecturers as media expert validators, 1 teacher at one of the high schools in Kota Bengkulu as a material expert validator, and 65 students from12th grade Science at one of the high schools in Bengkulu City. The research instruments used were needs analysis sheets, material expert and media expert validation sheets, and student response sheets. Data collection was carried out through questionnaires distributed to the validators and students. The results of media and material validation tests obtained average scores of 85% each, categorized as very feasible. Based on these results, it can be concluded that the Doppler effect practical demonstrator using FC-04 sensor and Arduino Uno is feasible. As for the student response results, the average score obtained was 85%, categorized as very good.