RAY, D.; CHAKRABORTI, B.; DAS, S.; SAMADDER, T. Remote Speed Control of DC Motor using DTMF Technology. The International Journal of Science & Technoledge, [S. l.], v. 3, n. 5, 2015. Disponível em: http://internationaljournalcorner.com/index.php/theijst/article/view/124169. Acesso em: 17 jul. 2024.