MICROCONTROLLER BASED AUTOMATIC CONTROL FOR WATER PUMPING MACHINE WITH WATER LEVEL INDICATORS USING ULTRASONIC SENSOR. Nigerian Journal of Technology, [S. l.], v. 35, n. 3, p. 579–583, 2016. DOI: 10.4314/njt.353.1136. Disponível em: https://www.nijotech.com/index.php/nijotech/article/view/1136. Acesso em: 27 apr. 2026.