Automation of Orchid Soil pH Using IoT-Based Soil pH Sensor (SKJ-001). Journal of the Physical Society of Indonesia, [S. l.], v. 1, n. 2, p. 98–115, 2025. DOI: 10.35895/jpsi.1.2.98-115.2025. Disponível em: https://journal.fisika.or.id/index.php/jpsi/article/view/47. Acesso em: 20 oct. 2025.