Setyawarno, D. et al. 2025. Implementation of IoT-based STEM-Contextual learning with the MQTT protocol on the digital literacy skills of pre-service science teacher. LUMAT: International Journal on Math, Science and Technology Education. 12, 4 (Apr. 2025), 15. DOI:https://doi.org/10.31129/LUMAT.12.4.2277.