ABIGAIL N. GONZALES, Engr.; B. MUYOT, Dr. Norma. Portable Solar Powered Outdoor Charging Station With The Application Of Servo Motor In Sunlight Tracking System With Light Detection Relay Sensor. International Journal of Science, Technology & Management, [S. l.], v. 3, n. 4, p. 950–958, 2022. DOI: 10.46729/ijstm.v3i4.563. Disponível em: https://ijstm.inarah.co.id/index.php/ijstm/article/view/563. Acesso em: 27 mar. 2026.