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This master's thesis is dedicated to my parents, Amparo and Fernando, who, with their love, effort, and company, have given me enough strength to achieve this goal. I am infinitely grateful for their example of responsibility, perseverance, and fortitude in taking on new challenges.To my brother Leonardo for his advice and unconditional support; his example allowed me to discover engineering. Finally, I thank all my friends for their support, experience, and affection in difficult moments and for celebrating my small successes. A thousand thanks to all of you. v I want to express my deep gratitude to engineer Sebastian Guarin for his advice, contributions, and ideas that allowed me to complete this thesis. I want to sincerely thank my thesis director Eduardo Giraldo who, with his extensive knowledge and patience to explain me, allowed me to materialize this idea. To my thesis co-director engineer Alexander Molina, who believed in this project from the beginning, I wish to thank you a thousand times because I consider you as friends more than colleagues.Additionally, I want to thank my lab mates Francisco, Juan Carlos, and Seir, who, with their complete disposition, supported me in the construction of the prototype. Finally, I thank my friend Fernando Luna, who donated part of the used filament.

Technological developments have brought changes in the industry, the process that was originallydone by humans has turned to the automation system. In this paper the application of the automationsystem is carried out on the processing of palm oil. The system is made in the form of a simulation ofan automation system using the Programmable Logic Controller (PLC) and Human MachineInterface (HMI). Automation of palm oil processing using PLC with the help of Unity Pro XLsoftware, monitoring processes using HMI with the help of Vijeo Designer Basic software, and analoginput simulated using a potentiometer. PLC receives and processes data from both analog inputs andfrom HMI. The process of cooking and extracting palm oil carried out by the PLC is displayed on theHMI. From the test results, it is known that the PLC can communicate with HMI and HMI can displaythe processes that occur in palm oil processing.

The accumulation of electronic waste is starting to be in the spotlight throughout the world. Apart from these problems robotics activities are increasingly developing throughout the world. Many robotics competitions are held as a forum for the creativity of a community so that inevitably the use of electronic components is increasing. The use of electronic components can be a trigger for the accumulation of electronic waste. This cannot be avoided because in the process of developing the robot it is possible for the electronic modules that be used in the experiment are have some problems so they have to replaced with new electronic modules. To minimize the accumulation of electronic waste can be done by making a portable electronic module so that several components can be installed and removed easily. Portability of a good electronic module can minimize component replacement if there is damage to the module. In this study discussed about the design of Robot Line Follower which can be assembled in a portable manner in which there are several modules that can be easily installed and removed. The sensor used in this robot is a photodiode, involving the Arduino Nano controller as a control center, L298N motor driver as a motor driver, and a 12V DC motor as an actuator. Not forgetting also the robot body is designed using acrylic to support and combine all line follower robot modules. The design of line follower robots is portable so that each module can be installed and removed easily.

Through advances of Internet-of-Things (IoT) technologies, smart home concepts have become increasingly prevalent, and they are gradually being adapted in society. Apart from cost efficiency and user convenience, implementing monitoring and control in a smart home has the potential to also increase energy efficiency. In this paper, a web-based monitoring and temperature control for an air conditioning (AC) system is proposed. The long-ranged AC control system consists of three ZigBee devices that enable wireless communication between the temperature, remote, and router modules which sends data over the internet using ESP8266. A web-based interface was also developed to display room temperature, last temperature of the AC, and a button to activate/deactivate the AC. The results showed that the prototypical system fulfilled the expected functionality, and that ZigBee is a robust choice of communication protocol.