P. U. SIAHAAN, A et al. Arduino Uno-based water turbidity meter using LDR and LED sensors. International Journal of Engineering & Technology, [S. l.], v. 7, n. 4, p. 2113–2117, 2018. DOI: 10.14419/ijet.v7i4.14020. Disponível em: https://www.sciencepubco.com/index.php/ijet/article/view/14020.. Acesso em: 27 apr. 2024.