BEST : Journal of Applied Electrical, Science, & Technology <p>a Journal that contain Applied Electrical, Science &amp; Technology. Published twice a year, in March and September.</p> <p><strong>P-ISSN:</strong> 2715-2871<strong>(print)</strong>;&nbsp; <strong>E</strong>-<strong>ISSN:</strong> 2714-5247 <strong>(online)</strong></p> <p>&nbsp;</p> en-US (Sagita Rochman) (Akhmad Solikin, ST.,M.Kom.) Fri, 22 Sep 2023 00:00:00 +0700 OJS 60 Four Digital Electronic Combination Key Using A 74HCT688 Comparator IC Accompanied with An Alarm as A Security <p><em>The development of science and technology is increasingly useful and has a positive impact on providing convenience in all areas of human life, so that various tools, books, information, facilities and others are increasingly new and developing more rapidly. In addition, the development of science and technology also has a negative or detrimental effect on human life, namely the occurrence of various rampant crimes, acts of theft, robbery, bank break-ins that often occur everywhere, for this the key role as a security device becomes very important. Various forms of locks are widely used, both mechanical and electronic, compared to electronic locks, mechanical locks are felt to be less secure for use as door security, a four-digit digital electronic combination lock is designed using a comparator IC 74HCT688 accompanied by an alarm as a door guard</em></p> Supriyono, Teguh Santoso Copyright (c) 2023 Supriyono, Teguh Santoso Fri, 22 Sep 2023 00:00:00 +0700 Automatic Door Lock Design with Arduino Mega 2560 Based Knocking Rhythm <p><em>As the development of knowledge and technology in the world of education is currently advancing rapidly, many provide ideas for new methods and innovations in the field of technological development, especially automatic door locks with a rhythm of knocking. Door locks are vulnerable to the risk of being left behind or lost, protection or security is needed to store them. This research is designed to build a private room door security by using the knock pattern of the process by performing a knock, identification to verification of each recognized knock pattern. The system will start working by doing the accuracy of the interval between knocks when the rhythm / rhythm of knocking based on previously stored data then the system is active, from that developed a tool that is used as a room door lock by knocking on the door with a rhythm / rhythm that has been adjusted to the knock. Using this tool is expected to help and maintain better room security.</em></p> Atmiasri, Melkior Baltasar Kasper Poso Copyright (c) 2023 Atmiasri, Melkior Baltasar Kasper Pos Fri, 22 Sep 2023 00:00:00 +0700 Designing a Surveillance System, Temperature and Humidity Detection based on Internet of Things (IoT) in the Server room University of PGRI Adi Buana Surabaya <p>University of PGRI Adi Buana Surabaya is a university located in Surabaya, East Java. All data management processes and academic information systems are connected to the server via a local network and the internet. Currently there are three server rooms owned by the University, namely: the main Server room in the PGSD Building, second floor; Backup Server room in the Postgraduate building, third floor; and network Server room in the Ngagel campus, building a, second floor. The server room accommodates network equipment and database servers require temperature and humidity that are always maintained and routinely need to be checked by officers. To avoid damage to the server and network devices in the server room, a temperature and humidity detection system based on the Internet of Things (IoT) is made. This system is built using Home Assistant as an application of Internet of Things (IoT) centralized control system and CCTV to display conditions in real-time in each server room. Sensor to detect temperature and humidity using the DHT11 Sensor, the ESP8266 Microcontroller acts as a link between the host and the sensor by utilizing a wireless network. This tool can provide benefits in the field of Information Technology and Data in terms of monitoring so that it officers can check anytime and anywhere through a Web Service.</p> Dwi Hastuti, Anggarda Saputra Wijaya Copyright (c) 2023 Dwi Hastuti, Anggarda Saputra Wijaya Fri, 22 Sep 2023 00:00:00 +0700 Design of Wireless Remotely Operated Mobile Robot "Line Botic" for Cleaning Solar Panels <p>In this research, we will design a wireless remotely operator mobile robot 'linesbotic' for cleaning solar panels, using the open loop method, simply an electric motor that works on the principle of two magnetic fields that produce movement. The aim is to be able to produce a force that drives torque. The motor is installed to carry out certain work that requires the right speed and direction of rotation, so that the speed and direction of rotation of the motor can be adjusted in such a way as to suit the intended use of the motor. The results of the design and software testing for each component can work well according to the list of programs that have been created, while for hardware testing with interference conditions from passing vehicles, road lampposts, trees and buildings with an average percentage of 47% can be achieved. running well, and while testing the joystick in the forward position at angular velocity (-0.0) and at linear velocity (1.0), the joystick in the backward position at angular velocity (-0.0) and at linear velocity (-1.0), the joystick in the right position at angular velocity (-1.0) and at linear velocity (-0.0), the joystick is positioned to the left at angular velocity (1.0) and at linear velocity (-0.0).</p> Ilmirizki Imaduddin, Ryoga Lybraocta Putra Wandanny, Moh Agung Amir Faruq, Thoriq Tuzani Copyright (c) 2023 Ilmirizki Imaduddin, Ryoga Lybraocta Putra Wandanny, Moh Agung Amir Faruq, Thoriq Tuzani Fri, 22 Sep 2023 00:00:00 +0700 Smart Home Remote Control System Prototype Using Internet of Things (IoT) Based ESP8266 Microcontroller <p><em>Technology is developing very rapidly in the current era, there will be several impacts that will result from the development of technology. Electronic equipment control can be done remotely in real time using the IoT system. The problem faced is the concern when leaving home. Because when leaving the house, homeowners sometimes often forget about electronic devices whether they are turned off or still on. IoT can be utilized at home as a smart home system by connecting an electronic device to an android application. This IoT-based smart home system uses an ESP8266 microcontroller which is used to connect between hardware and software that is controlled through the Blynk application. Blynk application is used as an interface that functions to provide input and produce output. This system consists of four sensors, namely the MQ2 sensor to detect gas leaks in the kitchen, the DHT11 sensor to determine the level of humidity and temperature in the bedroom, the PIR sensor to detect human movement at the front entrance, the ULTRASONIC sensor as a detector of the water level in the water reservoir and using three relays as a connector for lights and other electronic components. And using the Blynk application as a control system on the ESP8266 microcontroller.</em></p> Adi Winarno, Widodo, Mochamad Kevin Nurcahyo Copyright (c) 2023 Adi Winarno, Widodo, Mochamad Kevin Nurcahyo Fri, 22 Sep 2023 00:00:00 +0700 Design and Construction of A Self Balancing Robot using Long Range Control Based on NRF24L01 <p class="Abstract"><span lang="EN-US">At first, robots were created to replace routine human work, requiring a high level of precision, and also to replace humans in dangerous situations. Robots that have the ability to maintain self-balance are called Self Balancing Robots. The Self Balancing Robot is the result of the development of an inverted pendulum model which is positioned on top of a wheeled train. The robot is controlled using a remote control using NRF 24L01 which can be controlled remotely. And to find out the situation in running the robot which is controlled from the remote using To detect the tilt angle of the robot, the MPU6050 sensor is used which is a module that integrates three sensors, namely the gyroscope and accelerometer on three different axes.</span></p> Akbar Sujiwa, Suhadata Copyright (c) 2023 Akbar Sujiwa, Suhadata Fri, 22 Sep 2023 00:00:00 +0700 User Experience Analysis of Neobank Application Using Heart Metrics <p><strong>Based on the accumulated reviews, it is known that the symptoms of disrupted user experience are supported by several reviews which show dissatisfaction in operating the Neobank application, which may have an effect on decreasing user satisfaction. This problem is something that must be monitored by PT. Neo Commerce Bank so that the Neobank application remains sustainable. This research has a mission to find out what will be emphasized for the development of the Neobank application based on the HEART Metrics measurement tool with the Importance Performance Analysis method implemented. Determining the number of respondents in this study implemented the formula created by Slovin and obtained a population of 99 respondents who are residents of the island of Java who use the Neobank application. Until the results of the importance and performance elaboration, there are several statement items that need to be evaluated, but there are items that need to be evaluated and prioritized immediately based on the results of the calculation of the suitability level and Cartesian diagram, namely the user experience that it is not uncommon to experience errors when operating a Neobank with a level conformity 91.91%. The items in the aforementioned statement have the potential to divert the user experience in using the Neobank application.</strong></p> Ratih Aisyah, Annisa Lusyani Zahra, Wafi Hidayatullah , Dwi Shahita Copyright (c) 2023 Ratih Aisyah, Annisa Lusyani Zahra, Wafi Hidayatullah , Dwi Shahita Fri, 22 Sep 2023 00:00:00 +0700 Effectiveness of Wavelet and Fourier Transform Methods for Denoising ECG Apnea Signals <p><strong>An Electrocardiogram (ECG) signal results from recording the heart's electrical activity. Currently, diseases originating from heart abnormalities still dominate the world. Therefore, doctors need to find an ECG signal that is free from noise, this cleaning process is called denoising. The denoising methods commonly used are the wavelet transform method, and the Fourier transform method. Testing was conducted on ECG signal data with abnormalities in Apnea with RR intervals filled with noise, making the QRS complex difficult to identify. As a result, the Discrete Wavelet Transform (DWT) method produces the best form of reconstruction, resembling the initial ECG signal, while the Fast Fourier transform (FFT) method produces the best signal-to-noise ratio (SNR) for the denoising process. So, we get a superior FFT method in the ECG signal denoising process.</strong></p> Rasyida Shabihah Zukro Aini, Elsa Sari Hayunah Nurdiniyah Copyright (c) 2024 Rasyida Shabihah Zukro Aini, Elsa Sari Hayunah Nurdiniyah Fri, 22 Sep 2023 00:00:00 +0700