DESIGN AND DEVELOPMENT OF AN OPEN-SOURCE HARDWARE DIGITAL OXYGEN FLOW CONTROLLER FOR RESPIRATORY THERAPY. Quantum Journal of Engineering, Science and Technology, [S. l.], v. 7, n. 1, p. 92–107, 2026. DOI: 10.55197/qjoest.v7i1.276. Disponível em: https://qjoest.com/index.php/qjoest/article/view/276. Acesso em: 17 apr. 2026.