Three-Dimensional Volumetric Coordinate System Through the use of Light-Emitting-Diodes (LEDs) and Microcontrollers. Acta Universitaria [Internet]. 2016 Mar. 3 [cited 2026 Apr. 28];26:35-8. Available from: https://www.actauniversitaria.ugto.mx/index.php/acta/article/view/931