ZAGHLOOL MAHMOOD, Riyadh. High Accurate Automatic School Bell Controller Based On ESP-32 Wi-Fi. Technium: Romanian Journal of Applied Sciences and Technology, Constanta, Romania, v. 4, n. 10, p. 126–144, 2022. DOI: 10.47577/technium.v4i10.7929. Disponível em: https://www.techniumscience.com.techniumscience.pluscommunication.eu/index.php/technium/article/view/7929. Acesso em: 17 apr. 2026.