Abstract:This study developed and evaluated a standalone, non-intrusive radio frequency identification (RFID)-based elevator access control system for a four-story residential building. The system used an Arduino Uno, an MFRC522…
RFID reader, and relay interfaces to regulate access to Floors 2, 3, and 4. Authorized card identifiers and floor permissions were stored locally, enabling offline operation without an external database or network connection. The relays interfaced only with the elevator push-button circuits and did not modify the original controller, motor drive, door mechanism, or safety system. Performance was evaluated using 47 registered cards and three unregistered cards, with each card tested 50 times, producing 2,500 authentication trials. Under the tested conditions, all registered cards were correctly authenticated according to their assigned floor permissions, while all unregistered cards were rejected. The system achieved 100% authentication accuracy, 100% correct relay activation, and 100% unauthorized-card rejection. Stable card detection was obtained at distances of up to approximately 1 cm. The first-floor button remained independent of the RFID module to preserve minimum accessibility during module failure. The proposed system provides a practical and low-cost retrofit solution for floor-specific elevator access control in small residential buildings.
Abstract:This study proposes a linear regression-based intelligent calibration approach to improve the accuracy of water turbidity sensor readings in an Arduino microcontroller-based embedded system. The primary objective of this…
research is to develop a mathematical model capable of converting analog values from the Analog-to-Digital Converter (ADC) into a numerical representation that reflects the actual water turbidity level in Nephelometric Turbidity Units (NTU). The calibration process was performed using a standard Hanna Turbidity Meter with water samples ranging from 0.56 NTU to 500 NTU. Measurement results demonstrated a strong linear relationship between the ADC value (495–686) and NTU, with an average system accuracy level above 90%. Comparison of sensor measurements with the standard instrument showed an error margin below 5%, confirming the reliability of the linear regression model in compensating for optical sensor nonlinearities.
Abstract:A fuzzy logic-based control system in household split-type air conditioners (AC) offers an alternative approach to reducing excess energy consumption without compromising thermal comfort. This study aims to test the effectiveness…
ctiveness of three types of membership functions (MF), namely triangular, trapezoidal, and Gaussian, in improving energy efficiency and the stability of room temperature and humidity control. Simulations were performed using MATLAB software with the Mamdani fuzzy inference method and centroid defuzzification technique. The three MF were tested using 30 sets of temperature and humidity data to analyze their effect on fan speed and power consumption. The simulation results show that the trapezoidal MF provides the highest energy efficiency of 57.24%, followed by the Gaussian MF at 56.80% and the triangular MF at 53.71%. These findings indicate that fuzzy systems can significantly reduce energy consumption compared to conventional air conditioner controllers. This research is expected to serve as a reference in the development of more energy-efficient intelligent control systems.
Abstract:Educational program evaluation serves as a strategic element to ensure the improvement of learning quality at the elementary school level, particularly as schools are required to be adaptive to students’ diverse learning…
ng needs. A major issue frequently encountered is teachers’ limited capacity to implement evaluation models that are simple, sustainable, and relevant as a basis for instructional decision-making. This study aims to analyze the application of simple evaluation through formative and summative approaches as a systematic effort to enhance the quality of learning in elementary schools. The formative approach is employed throughout the instructional process to provide immediate feedback, identify students’ learning difficulties, and adjust teaching strategies in real time, while the summative approach is applied at the end of the instructional period to assess the level of goal attainment and the overall effectiveness of the program. The findings indicate that a balanced implementation of both approaches enables teachers to design learning activities that are more responsive, measurable, and oriented toward continuous improvement. Practically designed simple evaluations also encourage teachers to take an active role as controllers of learning quality rather than merely as curriculum implementers. The conclusion of this study confirms that the integration of formative and summative evaluation in a simple yet systematic manner effectively improves learning quality while strengthening a reflective culture in elementary school settings. The novelty of this study lies in its emphasis on an evaluation model that is easy to apply, contextual, and oriented toward teachers’ daily pedagogical decision-making, thereby offering a practical alternative for elementary schools with limited formal evaluation resources.
Abstract:Penelitian ini bertujuan untuk merancang dan mengimplementasikan jam digital berbasis pengontrol HUIDU HD-W00 Wi-Fi dengan konektivitas Wi-Fi. Sistem ini menggunakan modul tampilan LED yang dikendalikan oleh pengontrol…
HUIDU HD-W00 Wi-Fi untuk menampilkan waktu secara real time. Pengaturan waktu dan tampilan konten dilakukan menggunakan perangkat lunak HUIDU, memungkinkan sinkronisasi otomatis melalui jaringan Wi-Fi. Selain itu, pengguna dapat mengakses dan mengkonfigurasi jam digital dari jarak jauh melalui perangkat celular yang terhubung dengan Wi-Fi, sehingga memudahkan penyesuaian waktu dan format tampilan. Penerapan sistem ini diharapkan dapat memberikan solusi praktis terhadap kebutuhan tampilan waktu di berbagai tempat umum seperti sekolah, kantor, dan ruang publik. Penelitian ini juga membuka peluang untuk mengembangkan fitur tambahan seperti menampilkan tanggal, suhu atau informasi dinamis lainnya.
Abstract:Abstract: This research discusses the design and development of a plant-watering robot at a 1:30 scale controlled via an Android application and an embedded system based on an Arduino microcontroller. The purpose of this…
study is to produce an automatic plant-watering robot that is efficient, energy-saving, and easy to operate to support agricultural automation. The research method used is Research and Development (R&D), which includes stages of requirement identification, design, construction, testing, and system evaluation. The main components used include an Arduino Uno, HC-05 Bluetooth module, L298N motor driver, HC-SR04 ultrasonic sensor, 12V DC water pump, and a 25W solar panel as an alternative power source. The test results show that the robot can operate automatically with a success rate of 90%, battery endurance of approximately 1 hour and 13 minutes, charging time of about 5 hours and 38 minutes, and the water pump operates effectively for up to 5 hours. The integration of Android control, embedded systems, and solar power makes this robot an innovative solution for environmentally friendly and efficient agricultural automation.
Keywords: plant-watering robot; Android; embedded system; Arduino; solar panel
Abstrak: Penelitian ini membahas perancangan dan pengembangan robot penyiram tanaman skala 1:30 yang dikendalikan melalui aplikasi Android dan sistem embedded berbasis mikrokontroler Arduino. Tujuan penelitian ini adalah menghasilkan robot penyiram tanaman otomatis yang efisien, hemat energi, dan mudah dioperasikan untuk mendukung otomasi pertanian. Metode yang digunakan adalah Research and Development (R&D) dengan tahapan identifikasi kebutuhan, perancangan, pembuatan, pengujian, dan evaluasi sistem. Komponen utama yang digunakan meliputi Arduino Uno, modul Bluetooth HC-05, driver motor L298N, sensor ultrasonik HC-SR04, pompa air DC, dan panel surya 25 W sebagai sumber energi alternatif. Hasil pengujian menunjukkan bahwa robot mampu beroperasi secara otomatis dengan tingkat keberhasilan 90%, ketahanan baterai selama ±1 jam 13 menit, lama pengisian daya sekitar 5 jam 38 menit, serta pompa air bekerja efektif hingga 5 jam. Integrasi antara kendali Android, sistem embedded, dan tenaga surya menjadikan robot ini solusi inovatif untuk otomatisasi penyiraman tanaman yang ramah lingkungan dan berpotensi diterapkan pada lahan pertanian sesungguhnya.
Kata kunci: robot penyiram tanaman; Android; embedded system; arduino; panel surya
Abstract:Abstract : A mosque is a building used by Muslims to get closer to the creator by worshiping and observing Islamic law. Efficient water management in mosques is essential to support the sustainability and efficiency of natural…
atural resources. This study proposes an automatic water reservoir filling system in mosques using microcontroller technology. The fuzzy method is useful in filling automatic water reservoirs with microcontroller technology as an optimization and regulating the water filling process automatically. This system is to automate the process of filling water reservoirs by utilizing intelligent water level sensors and microcontrollers. In this research, I created a system that is able to detect the water level in the reservoir and regulate the filling process automatically. The use of a water level sensor allows accurate measurement of the water level, while the microcontroller controls the water pump according to the detected needs. The test results show that the implementation of microcontroller technology in filling automatic water reservoirs in mosques can increase water use efficiency and reduce waste. The system provides an effective and environmentally friendly solution for managing the mosque's water needs, contributing significantly to water conservation and maintenance of natural resources.
Keywords : water reservoir; mosque; microcontroller; fuzzy method; water level sensor
Abstrak : Masjid adalah sebuah bangunan yang digunakan umat muslim untuk mendekatkan diri kepada sang pencipta dengan beribadah dan menjalankan syariat agama Islam. Pengelohan air yang efisien di masjid sangat penting untuk mendukung keberlanjutan dan efisiensi sumber daya alam. Penelitian ini mengusulkan sebuah sistem pengisian tandon air otomatis di masjid menggunakan teknologi microcontroller. Metode fuzzy berguna dalam pengisian tandon air otomatis dengan teknologi microcontroller sebagai pengoptimalkan dan mengatur proses pengisian air dengan secara otomatis. Sistem ini untuk mengotomatiskan proses pengisian tandon air dengan memanfaatkan sensor water level dan microcontroller yang cerdas. Dalam penelitian ini, dibuat sistem yang mampu mendeteksi tingkat air dalam tandon dan mengatur proses pengisian secara otomatis. Penggunaan sensor water level memungkinkan pengukuran yang akurat terhadap tingkat air, sementara microcontroller mengontrol pompa air sesuai dengan kebutuhan yang terdeteksi. Hasil pengujian menunjukkan bahwa implementasi teknologi microcontroller dalam pengisian tandon air otomatis di masjid dapat meningkatkan efisiensi penggunaan air dan mengurangi pemborosan. Sistem ini memberikan solusi yang efektif dan ramah lingkungan untuk mengelola kebutuhan air masjid, memberikan kontribusi signifikan terhadap konservasi air dan pemeliharaan sumber daya alam.
Kata kunci: tandon air; masjid; microcontroller; metode fuzzy; sensor water level
Abstract:Abstract: Most of the braking systems used still use the drum system so that an automatic braking system is needed so that collisions rarely occur due to sudden braking which results in many accidents that claimed lives.…
This automatic brake control system is a device that functions as an automatic braking controller on four-wheeled vehicles without the driver having to press the brake pedal or brake manually. This system uses ultrasonic sensors to detect the distance of the car to objects that are in the way both in front and behind the car. Controlled by Arduino Uno microcontroller which is connected to servo motor and buzzer. The system can control the speed of vehicles and parking cars in the parking lot by designing and making a braking and parking system that works using ultrasonic sensors so that it can notify objects or things that are blocking both in front and behind the car. The car can stop quickly and accurately so it doesn't touch the object in front of it and the car can also park properly in the designated parking space.
Keyword: Ultrasonic Sensor; Microcontroller; Arduino Uno; Servo Motor; Buzzer
Abstrak: Sistem Pengereman kebanyakan digunakan masih menggunakan sistem tromol sehingga dibutuhkan system pengereman otomatis sehingga jarang terjadi tabrakan karena pngereman yang tiba-tiba yang mengakibatkan banyaknya kecelakaan yang menelan korban jiwa. Sistem kendali rem otomatis ini adalah sebuat alat yang mempunyai fungsi sebagai pengendali pengereman otomatis pada kendaraan roda empat tanpa si pengemudi harus menekan pedal rem atau pengereman secara manual. Sistem ini menggunakan sensor ultrasonik untuk mendeteksi jarak mobil terhadap benda yang mengahalangi baik di depan maupun di belakang mobil. Dikendalikan oleh mikrokontroler Arduino Uno yang terhubung ke motor servo dan buzzer. Sistem dapat mengendalikan laju kendaraan dan pemakiran mobil pada tempat parkir dengan merancang dan membuat sistem pengereman dan parkir yang bekerja dengan menggunakan sensor ultrasonic sehingga dapat memberitahukan benda atau sesuatu yang menghalangi baik di depan maupun di belakang mobil. Mobil dapat berhenti dengan cepat dan akurat sehingga tidak menyentuh benda did depannya dan mobil juga dapat parkir dengan tepat di tempat parkir yang telah ditentukan.
Kata kunci: Sensor Ultrasonik; Mikrokontroler; Arduino Uno; Motor Servo; Buzzer
Abstract:Abstract: At STMIK Royal Kisaran, research has been carried out for the manufacture of an electric motor prototype which is still in the development stage so that it requires the application of an automatic system that…
helps the work of the desired electric car system according to the needs of the user. At this time the prototype that has been designed has not used a car speed meter. Where digital measuring instruments have advantages over analog measuring instruments, where the readings of digital measuring instruments are clearer and more accurate and digital measuring instruments when viewed from an aesthetic point of view, digital measuring instruments are more attractive, and in motor vehicles digital speedometers are very rarely used, mostly motorized vehicles. still using an analog speedometer. It is necessary to apply a sensor system to detect the speed of the wheel mechanics of the electric car and connect it to the Arduino Uno microcontroller to control the value of the vehicle and display it on the LCD. By using this tool, it can determine the speed of the electric car vehicle so that the driver can calculate the speed of the vehicle and can be a reference for safety in driving.
Keywords: Microcontroller; Arduino Uno; Sensor; Electric Car Prototype
Abstrak: Pada STMIK Royal Kisaran telah dilakukan penelitian untuk pembuatan Protipe motor listrik yang masih dalam tahap pengembangan sehingga memerlukan penerapan sistem otomatis yang membantu kerja dari sistem mobil listrik yang diinginkan sesuai dengan kebutuhan pemakai. Pada saat ini untuk prototipe yang telah dirancang belum menggunakan alat pengukur kecepatan mobil. Dimana alat ukur digital mempunyai keunggulan dibanding alat ukur analog, dimana pembacaan alat ukur digital lebih jelas dan lebih teliti serta alat ukur digital jika dipandang dari segi estetika maka alat ukur digital lebih menarik, dan dalam kendaraan bermotor speedometer digital sangat jarang digunakan, kebanyakan kendaraan bermotor masih menggukan speedometer analog. Perlu dilakukanpenerapan dari sistem sensor untuk mendeteksi kecepatan dari mekanika roda dari mobil listrik tersebut dan dihubungkan ke mikrokontroler Arduino Uno untuk mengendalikan besar nilai dari kendaraannya dan ditampilkan pada LCD. Dengan menggunakan alat ini dapat mengetahui kecepatan kendaraan mobil listrik sehingga pengendara dapat memperhitungkan laju kendaraan serta dapat menjadi acuan keamanan dalam berkendaran.
Kata Kunci: Mikrokontroler; Arduino Uno; Sensor; Prototipe Mobil Listrik.
Abstract:Abstract: Nowadays, almost all of them use a dispenser, because of its practicality. But behind that there are several things that make the dispenser less efficient when taking drinking water from the glass, because the…
user has to press or turn the water tap in the dispenser. The working system of this tool is where the machine will run according to the commands obtained from the laser diode and the LDR sensor, the laser diode will reflect light that leads to the LDR. when the light reflected by the laser diode to the LDR is cut, it can be interpreted that the LDR and the laser diode detect or read the presence of an object in the form of a glass, automatically the two sensors instruct the controller to activate the water pump and the water pump will work to remove the water which will be filled in the glass that is placed in the dispenser with the volume of the glass used, the filling process and the end of filling will be displayed by the LCD and when filling the water the glass is full there will be a warning from the buzzer in the form of a sound. Users no longer need to press or turn the water tap when taking water from the dispenser using a glass.
Keywords: Dispensers;LDR Sensor;Diode Laser and Tools
Abstrak: Pada saat ini masyarakat sekarang sudah hampir semuanya menggunakan dispenser, karena kepraktisan. Namun dibalik itu semua ada beberapa hal yang membuat dispenser kurang efisien saat mengambil air minum pada gelas, karena pengguna harus menekan atau memutar keran air yang ada pada dispenser. Sistem kerja dari alat ini ialah dimana mesin akan berjalan sesuai dengan perintah yang didapat dari Dioda laser dan sensor LDR, Dioda laser akan memantulkan cahaya yang mengarah pada LDR, pada saat cahaya yang dipantulkan Dioda laser ke LDR terpotong maka dapat diartikan LDR dan Dioda laser mendeteksi atau membaca adanya benda berupa gelas, secara otomatis kedua sensor tersebut memerintahkan controller mengaktifkan pompa air dan pompa air akan bekerja mengeluarkan air yang akan diisikan pada gelas yang diletakkan pada dispenser dengan volume gelas yang digunakan, proses pengisian dan akhir pengisian akan ditampilkan oleh LCD dan saat pengisian air pada gelas penuh akan ada peringatan dari buzzer berupa bunyi. Pengguna tidak perlu lagi menekan atau memutar keran air saat mengambil air pada dispenser menggunakan gelas.
Kata Kunci : Dispenser;Sensor LDR;Dioda Laser dan Alat