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This research successfully designed and built a CNC drawing machine based on Arduino. The system utilizes NEMA stepper motors to move the X and Y axes, as well as a servo motor to control the Z axis. The Arduino Uno, supported by GRBL firmware, acts as the central controller that processes commands from the Inkscape software. The results of the research demonstrate that the developed CNC machine is capable of producing images with satisfactory accuracy. The appropriate selection of components and optimal parameter settings have contributed to the machine's reliable performance.

This research aims to design a HFO Settling Tank monitoring simulation tool using an ultrasonic sensor that displays the fuel level in real time and accurately. The research that will be carried out is by utilizing Arduino Uno microcontroller technology and utilizing ultrasonic waves from ultrasonic sensors to determine a height in a tube container. These sensors as inputs will be received by Arduino Uno and the data results from the sensor will be displayed on the LCD and notification from the buzzer. In this study the authors used a research method in the form of the Rnd (Research and Development) method, which begins by analyzing and conducting in-depth research on an object or tool. Then the author designs a tool design which will then validate the design design, and revise the product if the design is deemed insufficient. For the last stage, testing the product, if the tool does not work according to the expected function, a redesign will be carried out. The result of this research is that the ultrasonic sensor is able to detect the height of the simulated container. The results of the detection are processed through Arduino and displayed on the LCD so that all parties can know the water level in the tube container.

The importance of innovation in waste management is increasingly felt in this modern era. This research introduces an automated waste handling system utilizing Arduino Uno-based sensors. Arduino Uno, as a versatile microcontroller, is employed to control the automation process in waste bins. Integrated ultrasonic and load cell sensors assist in identifying the presence of individuals disposing of trash and monitoring the weight of the waste, triggering the automatic disposal mechanism. This implementation not only enhances the efficiency of waste management but also provides convenience for sanitation workers. The study details the design, implementation, and performance evaluation of the automated waste bin system, showcasing the potential utilization of Arduino Uno technology in creating intelligent and sustainable solutions for waste management.

Sea water pollution is an increasingly urgent global issue, caused by various factors such as industrial waste, household waste, and ship activities. One of the solutions needed to overcome this pollution is the development of a detection system that is able to monitor polluting substances quickly, accurately, and efficiently. This research aims to design and build a microcontroller-based seawater pollution detection system, which can identify various pollution parameters in real-time. This research uses the Research and Development (R&D) method to develop a system consisting of several main components, including a pH sensor, turbidity sensor, Arduino Uno, GPS module, Raspberry Pi 4, USB camera, LiPo battery, and step-down converter. Each component is tested individually before being integrated into the overall system. The results of testing in a real environment show that the system is able to detect seawater pollution parameters with high accuracy. However, there are some errors in data collection, especially in the camera sensor with a percentage error of 32%, turbidity sensor 20%, and pH sensor 24%. Further improvements and developments were made based on the evaluation results to enhance system performance. The resulting system is considered accurate, reliable and easy to use, making an important contribution to efforts to protect seawater quality and mitigate the negative impacts of pollution on the environment and human health.

To enhance awareness of environmental cleanliness and prevent the spread of diseases or viruses, it is sometimes necessary to employ unique methods to attract people's interest, thereby encouraging them to dispose of waste properly. Traditional trash bins generally require manual operation to open and close, which can be inconvenient for users and increase interaction between people and the trash bin. Moreover, manual trash bins often struggle to manage waste when they are full. This research, conducted by Institut Teknologi Nasional, offers a solution by designing a smart trash bin based on Arduino Uno, utilizing the HC-SR04 or ultrasonic sensors, a servo motor, and a buzzer or speaker. In this smart trash bin, the HC-SR04 ultrasonic sensor is used to detect distance, while the servo motor functions to open and close the lid. The buzzer or speaker provides notifications when the lid is about to open or when the trash bin is full.

Sebagian besar Panti Asuhan di Indonesia memiliki kebun pribadi untuk dimanfaatkan sebagai bahan masakan internal Panti Asuhan dan masih melakukan perawatan dan pemeliharaan tanaman secara konvensional. Mikrokontroler arduino UNO dan sensor kelembaban tanah dinilai mampu membantu pekerjaan perawatan kebun dalam mengatur kadar air tanah. Oleh karena itu akan dilakukan pengabdian pada Panti Asuhan Al-Husna Kabupaten malang yang memiliki kebun sayur yang lumayan luas sehingga pengabdian ini bisa membantu perawatan. Pengabdian ini ditujukan untuk Mengetahui cara pemanfaatan mikrokontroler arduino dalam meningkatkan pertumbuhan kebun cabai. Mengetahui pengaruh beberapa level kadar air yang berbeda terhadap pertumbuhan tanaman cabai yang diatur secara presisi menggunakan mikrokontroler Arduino. Menentukan kadar air yang optimal pada pertumbuhan cabai. Diharapkan dari pengabdian ini bisa membantu kelayakan dan kualitas makanan pada Panti Asuhan Al-Husna Malang Kabupaten Malang.

The aviation industry is one of the service sectors. Due to its large number of users, safety is the primary concern in this industry. To ensure this safety, routine maintenance of operating aircraft is crucial, leading to the emergence of the aircraft maintenance industry. Due to the safety factors of the workpiece, installing ladders requires a significant workforce to supervise the workpiece, namely the aircraft itself, to prevent the ladder from hitting the aircraft body, which can result in COPQ (Cost Of Poor Quality). However, the use of many workers for ladder installation is considered inefficient because the maintenance process could be expedited if these workers could be utilized to install ladders on other parts of the aircraft. Therefore, if maintenance can be completed more quickly, the aircraft can return to flight sooner, meeting the airline's flight demands. Addressing this issue, this study aims to facilitate the ladder installation and removal process, thereby reducing the potential for collisions and ensuring the ladder is positioned at the required distance. This is achieved through ultrasonic sensors mounted on the work ladder, connected to a motor via Arduino Uno. The motor will stop when the input from the ultrasonic sensor reaches the predetermined distance. Additionally, if the aircraft tail moves while the ladder is installed, the system will automatically adjust the ladder's position to maintain the necessary distance, thus minimizing losses during aircraft maintenance.    

Truckloader (TL) is a tool that functions to move Fertilizer from the weigher (where the weighing and bagging process is) to the place of the pallet or to the place of the truck bed. Broadly speaking, this tool is in the Bagging 1B unit area. This truckloader has a digital counter, namely a counter which has the function of calculating fertilizer from the weigher to the truckloader. From this counter, this will later be used as a reference or comparison. In order to find out the amount of fertilizer on the pallet or entering the truck body, on the other hand it is also use it for the technician team as a reference for preventive maintenance and replacement of spare parts. So far, counter checking is done manually by visiting the field and seeing it in person. For this, the Internet of Things is needed so that work is more effective and easier for the monitoring process. By using Senesore infrared proximity as input to the Arduino Uno as an electronic circuit controller and running programs, 16x2 LCD as a display of instructions from Arduino, NodeMCU as a liaison between the microcontroller and Ubidots and to display digital data from Arduino. This counter tool will later be used to monitor the amount of fertilizer passing through truckloader via the Ubidots web. This system can display data on Arduino that can be viewed via the Ubidots web that has been made.

An automatic water level controller mechanism in a water tank is needed to maintain the availability of water supply. One way is to create a control system that uses an ultrasonic sensor as a detector of the water level that is fed back to the water tank filling pump. To minimize fluctuations in sensor readings, a mechanism is needed to minimize the occurrence of water ripples. To provide easy information to users on site, a monitoring system in the form of an LED indicator is also added that informs the condition of the water level in the water tank. Therefore, in this study, a tool will be created that can automatically control and monitor the water level based on Arduino Uno which uses an ultrasonic sensor and LED indicator with a wave ripple holder

Penelitian ini bertujuan untuk merancang mesin router mini CNC 3 axis. Rumusan masalah penelitian ini adalah; bagaimana proses pembuatan mesin mini CNC dan bagaimana proses pengujian mesin mini CNC. Perancangan mesin ini dibagi menjadi beberapa tahap diantaranya; desain bagian rangka, bagian kelistrikan, bagian penggerak dan bagian sistem kendali. Desain bingkai menggunakan software Solidworks. Bahan rangka yang digunakan adalah alumunium dan ABS. Hasil analisa statik pada sumbu x mempunyai tegangan von misses maksimum sebesar 6,547 N/mm2 dengan beban sebesar 30 N dan pada sumbu y dengan tegangan von misses maksimum sebesar 11,805 N/mm2 dengan beban sebesar 50 N Motor stepper yang digunakan adalah motor stepper Nema 17. Daya yang dibutuhkan untuk motor stepper sumbu x sebesar 0,3297 watt, untuk sumbu y sebesar 0,471 watt dan untuk sumbu z sebesar 0,0785 watt. Sistem kendali pada mesin CNC Router 3 Axis ini menggunakan komponen Arduino UNO, CNC Shield Expansion Board, driver motor stepper A4988, Firmware GRBL dan aplikasi GRBL Controller.

The Electrical Safety Analyzer is a calibration tool commonly used to measure leakage currents. In this study, the performance of the PZEM-004t sensor was compared with the sensor used in the Fluke Biomedical brand Electrical Safety Analyzer 612 to measure the validity of the instrument used to carry out various electrical safety tests, including tests. ground cable resistance, current consumption test, and to check whether the device under test meets electrical requirements.. This tool also makes things easier for electromedical technicians. This tool, designed for electrical testing of electromedical equipment, requires sensors and a microcontroller. The voltage and current sensors use a voltage follower circuit, an inverting amplifier and the microcontroller uses an Arduino Mega. The test method is to compare the measurement results of the TA module tool with the measurement results of the Fluke Biomedical brand Electrical Safety Analyzer tool in 5 trials with an interval of 5 minutes for each test. From the test results for the phase to neutral voltage, the largest error was obtained at 0.6% for the infant warmer load. From the results of the phase to ground voltage test, the largest error was obtained at 0.3% for the infant warmer load. In testing the current on the infant warmer load, an error of 0.0-0.1% was obtained.    

A hot plate magnetic stirrer is laboratory equipment used to heat and mix one solution with another solution to create a homogeneous solution with the help of a Stir Bar stirrer. The plate contained in the equipment can be heated so as to speed up the homogenization process. The measuring cup containing the solution will be stirred using a stir bar as a stirrer. An Arduino Uno as a heater controller and a dimmer as a motor controller. Based on data from tool testing results that have been carried out, the temperature measurement results were 39-220 C while the motor speed was 500-1200 rad/m.    

As an important means of sea transportation for the distribution of goods and human mobility between islands, ships require a reliable prime mover to avoid wear or damage, especially when overspeeding occurs which can result in fire. Therefore, a prototype was created that uses an IR Obstacle sensor to monitor the RPM speed of the rotating engine. By using Arduino Uno as a processor, this prototype is able to display the RPM value on the LCD and provide a signal in the form of a green light if the speed is below 4000 Rpm, as well as a red light and buzzer sound if overspeed occurs above 4000 Rpm, followed by the engine turning off after 15 seconds. Testing shows that this prototype has a high level of accuracy, with a difference between 0.08% to 2.73% and an average difference of 1.003%.

Indonesia is a country located between active earth plates, namely the Eurasian Plate, the Indo- Australian Plate, and the Pacific Plate. These plates are very active plates that move and pose a high risk of earthquake disasters. Therefore, the author wrote an Applied Scientific Work with the title Earthquake Disaster Detection System Using Arduino at the SMI Shipyard port. Earthquake Detection System is made in order to detect earthquake disasters and minimize casualties due to the earthquake disaster. The use of these tools in the world of transportation to detect earthquakes used in coastal areas and port ports located in earthquake-prone areas. The method used is system design to determine the occurrence of an earthquake or vibration detected by the ADXL 355 sensor to reach the output, namely the buzzer and LCD. From that the author makes a tool that can provide warnings to the community or workers in the area to avoid casualties. Earthquake Detection System Using Arduino gives output commands to the buzzer and 220 V lamp. If the vibration is from 2.0 SR, the buzzer and light output will not be active. This system has an accuracy rate of 77.6% and has the largest error rate of 22.4%.

The Covid-19 virus emerged in late 2019 in Wuhan, China, rapidly spreading to over 190 countries worldwide. Governments implemented various measures, including body temperature checks as an initial step in detecting Covid-19 symptoms. However, manual body temperature measurement using a thermogun has limitations due to direct contact. Therefore, this research develops an automatic, contactless body temperature monitoring system based on Arduino Uno to improve efficiency and reduce physical contact. The system uses an HC-SR04 ultrasonic sensor as a distance limiter for temperature measurement, an MLX-90614 infrared temperature sensor for detecting body temperature, and an Arduino Uno to process data displayed on an LCD in degrees Celsius, with a buzzer as a notification indicator. The test results show that this system achieves a body temperature measurement accuracy of 99.53%, producing results close to the reference device when the object and sensor are within a 1–5 cm range and aligned in a parallel position.

The lack of awareness from Resto visitors in the process of disposing of garbage in its place makes the environment around the Resto polluted at least the awareness of Resto visitors to dispose of garbage in its place is still low. The purpose of this research is to create an automation system for the trash can. The problem that arises for Resto S2 is the lack of effectiveness, especially in the tissue waste section, one of the solutions that can be done for these problems, namely by designing a device in the form of a smart trash can that can open and close automatically, so that Resto visitors do not need to make direct contact with the trash can. Researchers aim to realize the design of the tool, as for the method carried out in this study is to implement the design of a smart trash can in the form of a box that has an input in the form of an ultrasonic sensor, and an output in the form of a servo motor. The results of input and output testing show that the ultrasonic sensor can detect movement in front of the trash can and the servo motor can move the trash can cover, so it can be concluded that the smart trash can work system as a whole can function properly in accordance with the design that has been made.

Laboratory space is a place to store important assets, so security is an important factor. The application of technology is needed to help security in the laboratory space. In addition, with various technology options, it is necessary to consider human errors that often occur. The use of smart door access with a mechanism using a fingerprint sensor is determined due to security considerations and minimizing human error. Security is guaranteed because only registered fingerprints can access the room. The microcontroller uses Arduino Uno as a system driver that has been programmed in the Arduino IDE. The system works according to the function where the outer door uses a fingerprint sensor while the inner door uses a touch sensor to move the solenoid door lock. Three variations were carried out, namely clean fingers, dusty fingers and wet fingers to observe fingerprint performance. The fingerprint sensor works quickly when the finger is clean then the finger is wet and finally the finger is dusty. The length of time the solenoid door lock opens when the smart door access system is operated according to the settings in the Arduino IDE program.

Peningkatan tingkat kriminalitas dan keahlian para pencuri yang semakin tinggi, membuat penulis memperoleh ide atau gagasan inovasi alat pengaman pintu rumah menggunakan Radio Frequency Identification (RFID) berbasis arduino uno yang tentunya dengan sistem pengamanan yang tinggi. Rancangan keamanan ini tidak mengandalkan mekanik sebagai  interface nya melainkan menggunakan  perangkat elektronik yang cukup sulit  untuk dibobol karena selain diperlukan  pengetahuan mengenai elektronik, para  pelaku kriminalitas juga harus memilki  pengetahuan dibidang pemrograman dan  teknologi informasi. Berbeda dengan kunci  mekanik, kunci elektronik pada rancangan  keamanan ini menggunakan  Radio  Frequency Identification (RFID) sebagai  pembukanya. RFID (Radio Frequency Identification) merupakan proses pengidentifikasian suatu objek secara otomastis dengan frekuensi radio. Ada dua komponen penting dalam sistem RFID yaitu kartu (Tag) dan pembaca (reader). Dalam perancangan alat ini, RFID digunakan untuk menghidupkan sistem engine cut off yang ada pada sepeda motor untuk pemutus arus pada CDI sepeda motor, tanpa harus melepas kepala aki yang kadang membutuhkan waktu yg cukup lama. Dalam sistem ini pemilik kendaraan bertindak sebagai RFID tag berisi serial khusus yang menginformasikan tentang kepemilikan yang terdapat pada gantungan kunci pemilik kendaraan dan sepeda motor sebagai RFID reader yang berfungsi sebagai pembaca dari informasi yang ada pada gantungan tersebut. Jadi ketika RFID reader mendeteksi RFID tag pada gantungan kunci pemilik sepeda motor dan sesuai maka sistem engine pada sepeda motor akan on. Kantor Kecamatan Plantungan merupakan kantor Kecamatan yang terletak di desa Plantungan  Kabupaten Kendal Provinsi Jawa Tengah dengan kepala camat bernama bapak Suyanto. Letak Kantor Kecamatan Plantungan yang tidak terlalu dekat dengan warga sangat memungkinkan terjadinya aksi pencurian atau pembobolan di dalam Kantor Kecamatan Plantungan apalagi di kantor Kecamatan Plantungan saat malam hari, dalam hal ini sangat memudahkan pencuri untuk masuk kedalam kantor Kecamatan dengan mudah.

Broiler chickens are livestock whose growth is influenced by environmental temperature. The temperature of the chicken coop that is not suitable can affect the decrease in productivity and cause death in broiler chickens, so that the temperature setting of the cage must be considered. The design of this temperature and humidity monitoring system uses a nodemcu ESP8266 microcontroller and an arduino uno. If the measured temperature exceeds the set temperature limit, the system will send an SMS to the smartphone so that the cage officer can take appropriate action.

Internet-of-Things (IoT) merupakan teknologi yang mengintegrasikan berbagai peralatan dengan Internet. Salah satu pemanfaatan IoT adalah sistem kontrol elektronik pada berbagai peralatan rumah. Peralatan rumah dapat dilengkapi dengan mikrokontroler, sensor, dan aktuator, serta modul komunikasi, sehingga dapat dihubungkan ke internet dan dipantau dari jarak jauh. Salah satu peralatan atau objek yang ada di rumah adalah tempat sampah yang umumnya terbuat dari plastik, tetapi umumnya belum dapat dipantau dan dikontrol otomatis. Tujuan penelitian ini adalah untuk merancang sistem kontrol untuk membuka dan menutup tempat sampah secara otomatis menggunakan Arduino sebagai pengontrol sistem, sensor ultrasonik sebagai pendeteksi objek yang mendekat, motor servo yang berguna untuk menggerakkan tutup tempat sampah, dan buzzer serta LED sebagai indikator ketika terdapat objek yang mendekat. Hasil pengujian sistem menunjukkan bahwa tempat sampah dapat membuka tutupnya secara otomatis saat mendeteksi objek pada jarak paling jauh 50 cm dengan delay selama dua detik, dan kemudian akan tertutup secara otomatis ketika objek tersebut menjauh dari tempat sampah tersebut.