The world is experiencing a new stage, the Fourth Industrial Revolution or also called Industry 4.0, which promotes the digital revolution of industries through the use of artificial intelligence and the internet of things; this revolution will generate new jobs. This work proposes the creation of Educational Mechatronics, which is an educational methodology that aims to develop the skills and abilities requiredby the jobs of the new industrial era by promoting the analytical thinking as a previous step for wardcritical thinking competence, allowing to generate solutions and innovative proposals for problems of industrial automation and automatic process control that companies from the industrial sector experience nowadays. The educational mechatronics integrates the Educational Model of the University, resourcesand existing academic spaces, practical activities and mechatronic prototypes focused on promoting the critical thinking of Mechatronic Engineering students through active learning. In addition, it is sought that with the inclusion of the Educational Mechatronics the levelof attraction of the students for their career will be increased by having an intensive active participation in experimental sessions and thus reduce the percentage of student desertion. The fore coming engineers need tobe trained with an innovative educational methodology since they will be in charge of strengthening and promoting the next technological revolution Industry 4.0, promoting new business and the social and economic development of the countries.

Industry 4.0 involves various areas of engineering such as advanced robotics, Internet of Things, simulation, and augmented reality, which are focused on the development of smart factories. The present work presents the design and application of the methodology for the development of augmented reality applications (MeDARA) using a concrete, pictorial, and abstract approach with the intention of promoting the knowledge, skills, and attitudes of the students within the conceptual framework of educational mechatronics (EMCF). The flight of a drone is presented as a case study, where the concrete level involves the manipulation of the drone in a simulation; the graphic level requires the elaboration of an experiential storyboard that shows the scenes of the student’s interaction with the drone in the concrete level; and finally, the abstract level involves the planning of user stories and acceptance criteria, the computer design of the drone, the mock-ups of the application, the coding in Unity and Android Studio, and its integration to perform unit and acceptance tests. Finally, evidence of the tests is shown to demonstrate the results of the application of the MeDARA.

The aim of using electromechanical air conditioning in buildings is to maintain thermal comfort for its occupants; however, this type of air conditioning represents 40% of the total energy consumption of a building, generating economic and environmental impacts, because fossil fuels are the main source of energy. To reduce the use of electromechanical conditioning, it is possible to take advantage of the climatic conditions of the region to improve its performance. Due to the small number of works that quantitatively support measures aimed at improving the thermal behavior of houses in an integral way and the growth of mass construction in Mexico, in the present work, a solar chimney is incorporated in a typical type of social interest housing in Guanajuato. The incorporation of the solar chimney was simulated by using computational fluid dynamics (CFD) using ANSYS and evaluated by ASHRAE Standard 55-2017. The selected arrangement induces air flow inside without the need for external flow and obtains speeds of 0.2 m/s; thus, it could be considered for rooms within comfort zones up to an operating temperature of 29 °C according to the ASHRAE Standard 55-2017, PMV method.

Biofuel production has increased significantly in several countries in recent decades. Different evaluation techniques are required for their characterization. The study measures the properties of the obtained biodiesel and a commercial diesel sample, using the techniques of open circuit potential, linear scanning voltammetry and electrochemical impedance spectroscopy. The transesterification reaction between sunflower oil and methanol was carried out with ultrasound as the energy source. The determination of triglyceride conversion to biodiesel is performed by high performance liquid chromatography (HPLC), obtaining up to 99.79% with a yield of 93.40% at a transesterification temperature of 50 ${}^{\circ }$C for 60 min with a methanol/oil molar ratio of 6:1. The potassium hydroxide catalyst concentration was 1.0 g catalyst/100 g oil. The biodiesel samples generally showed open circuit potential (OCP) values less than 790 mV and stabilization time less than 120 s, Linear sweep voltammograms (LSV) show no reaction peaks with current densities on the order of NanoAmpere, Electrochemical impedance spectroscopy (EIS) showed a capacitive system with impedances on the order of MΩ cm${}^2$ at low frequency; This information could help characterize biofuels and other similar materials.

This research is focused on the influence of carbonate minerals on the properties of ceramic blocks as a replacement for commercial stabilizers, using three types of clays and sawdust as raw materials extracted from Chiapas, Mexico, for their application in thermal insulation on lightweight construction systems of local buildings. The effective thermal conductivity of each sample was tested by the guarded hot plate method in a permanent state, and their physical and chemical properties were determined by water absorption, X-ray powder diffraction, and X-ray fluorescence spectroscopy techniques. The results directed attention toward the knowledge of the role of the parameters in improving the thermal insulation properties, highlighting calcite as a favorable stabilizer in the manufacture of such blocks. Furthermore, the parameter affecting the thermal conductivity of the samples is the mass percentage of magnesium oxide (MgO) in a positive linear trend. Finally, the volumetric proportions of the sawdust as a pore-forming aggregate influence the decrease in the bulk density in the ceramic blocks and, thus, the reduction in the thermal conductivity.

This study introduces a metrological approach to measure the aerodynamic shape and the twist of a wind turbine blade. The optical profilometer measurement technique used is laser triangulation. A camera records the image of a line projected onto a section of the blade and, by reconstructing the airfoil shape, the twist angular position of the profile with respect to the axial line of the blade is determined. This methodology is applied to test different sections of a Wortmann FX 63-137 airfoil with a length of 1700 mm. The results of the aerodynamic shape and twist angle are quantitatively verified by comparing them with the ideal or design values. The reconstruction process achieved a resolution of 0.06 mm, and measurement errors in the twist angular position were less than 0.1°. The presented method is efficient, accurate, and low cost to evaluate the blade profiles of low-power wind turbines. However, due to its easy implementation, it is expected to be able to measure any full-scale wind blade profile up to several meters in length.