Sistemas y Telemática <p style="text-align: justify;">Sistemas y Telemática [SyT] (ISSN 1692-5238) is a scientific periodical publication quarterly edited by the Engineering Faculty of Universidad Icesi. SyT publishes full text in both, English and Spanish.&nbsp;Its mission is to contribute to the diffusion of innovation and knowledge through the publication of high-quality unpublished articles related to research activities in systems engineering –in its widest sense–, informatics, telematics, computing and other related sciences. Its target audience includes current and future engineers dedicated to researching, teaching or working for the "real" sector. S y T is part of the Open Access Initiative [OAI], its content can be used under CC BY license.</p> en-US (José Ignacio Claros V.) (José Ignacio Claros V.) Tue, 06 Mar 2018 15:02:52 -0500 OJS 60 Pulse oximeter with Internet data visualization <p class="Abstract">In this work, we describe the design and construction of a pulse oximeter for remote patient monitoring. The proposed device uses the ESP8266 microcontroller as the core component to establish the wireless connection and send information to a node.js server.&nbsp; Then, a web service shows the saturation of oxygen and the heart rate through a WebSocket connection. This paper describes the hardware and software designs, justifying the decision to select each component of the proposed device. Finally, some experimental results are shown to illustrate the performance of the developed prototype.&nbsp;</p> Gabriel Contreras Mota, Rafael Lemuz López, Cesar Bautista Ramos ##submission.copyrightStatement## Sun, 01 Apr 2018 00:00:00 -0500 Implementation of an OBD-II diagnostics tool over CAN-BUS with Arduino <p>Since its beginnings, the goal of On Board Diagnostics [OBD] standard has been to take control over gasses emission&nbsp; in automotives and its effects in the environment. This project implements a system based on OBD-II diagnostic protocol over a CAN bus, which allows both, displaying real time variables and diagnostic the vehicle status to get codes about its functioning, failures and energy efficiency. On board diagnostic systems allow to obtain failure codes stored and several relevant variables as: speed, gas level and CO<sub>2</sub> emission levels, in real time. An OBD-II system centered at the end of the bus, corresponding to the scanner or diagnostic unit, was implemented on an Arduino Mega 2560 board connected to a CAN transceiver-controller composite module. The scanner has a USB connection that makes it easy to view the data recovered in a versatile way on a PC through a graphical interface created in LabVIEW ™. &nbsp;</p> Armando Rodríguez Rodríguez, José Raúl Vento Álvarez, Ricardo Inouye Rodriguez ##submission.copyrightStatement## Sun, 01 Apr 2018 00:00:00 -0500 Help button for elderly people on the Arduino platform <p>The design and implementation of a system capable of providing elderly people with a fast track to ask for help, remotely, to the person in charge of their care, using the cellular network is reported t. The main functionality is a help button, through which the person in charge of the elderly care will receive a text message when the elder presses the button. Recognizing the little connection between the people of this age group with cellular technology, defining the number to which the messages will be sent (and writing them) is not their task. The system has other features of great value, as a group of automatic alarms, also operating via SMS, generated by a group of sensors included in the system, which facilitates remote decision making from caregivers.</p> Lázaro J. González Salgueiro, Ariosky Areces Gonzalez, Pablo A. Rueda Rodríguez ##submission.copyrightStatement## Sun, 01 Apr 2018 00:00:00 -0500 Towards smarter cities taking advantage of the Fog Computing paradigm <p>The fog computing term has achieved importance in the last years due to its effect in the latency reduction that the Internet of Things [IoT] applications have. These applications demand real-time (or nearly real-time) responses and they are characterized by low bandwidth consumption; hence, the fog computing is relevant in achieving these requests because part of the processing is done near the end user devices. For this reason, the cloud computing paradigm is not enough for some applications, since nowadays, the instant need of data and the decision-making process leverage –or somehow discover– a new horizon that demands a complementary variable. This article consists on an approach to the fog computing term, together with the requirements analysis for engineering solutions in the IoT field. Also, its impact in the smart cities and other fields plus its main challenges are addressed. We also present a guideline to implement a recommendation system for sightseeing places for tourists based in fog computing embraced in a large smart city project located in Havana.</p> Shouddy Tárano León, Tatiana Delgado Fernández, Alejandro Luar Pérez Colomé ##submission.copyrightStatement## Sun, 01 Apr 2018 00:00:00 -0500