Low-Cost Arduino-Based Counter System. JOURNAL UGC-CARE IJCRT (2349-3194) | ISSN Approved Journal, [S. l.], v. 14, n. 4, p. 50293–50297, 2024. DOI: 10.61359/2024050035. Disponível em: https://ijcrt.org.in/index.php/ijcrt/article/view/39. Acesso em: 30 apr. 2026.