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In the current era of globalization and technology, computers, RFID are examples of information technology tools that are indispensable for meeting human needs in almost every aspect of life, including the management of infrastructure and equipment lending.According to direct research at Widya Praja Ungaran Vocational School, there are only two workers who handle facilities and infrastructure. In carrying out their work assignments, they still experience difficulties. Excess workload and the process of borrowing tools that still lacks a sense of responsibility, so that the results of the work are not maximized.The existence of increasingly sophisticated technology, the management of infrastructure and equipment lending can be done with the help of technological tools that will be implemented in this school. This research aims to make it easier to administer, because this school has not yet added a new workforce.This research can be designed with the help of software (Bootstrap, MySql), programming (PHP, Arduino IDE) and equipment (NodeMCU ESP8266, RFID, LCD, I2C, buzzer, power supply, breadboard, jumper cables, resistors, LEDs) to provide data information. more accurate, effective, efficient and provide a good working atmosphere in this school. It is hoped that this research can reduce work overload and create a sense of responsibility in borrowing equipment, using local networks (wifi / handphone) and computers or laptops, with the research method used is research and development (R&D).

Main engine is the main driving engine. This research develops a ship's main engine temperature monitoring system using the Blynk application. Thermocouple sensors measure engine temperature and IR Sensor measure RPM, the data is processed by ESP32, and sent to the Blynk cloud server, this research aims to determine the design of a prototype intelligent monitoring system to detect the temperature of a ship's main engine using a Thermocouple sensor, NodeMCU ESP32 which operates at 3.3V power is used as the processing core data. The system design in this research integrates Internet of Things (IoT) technology. Test factors for thermocouple temperature measuring devices and RPM sensors (IR Sensors). The test procedure uses a dynamo as a simulation of the main engine, tested for 5-10 minutes under normal conditions and 5 minutes when the dynamo feels warm to hot.

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.

Technological advances in the industrial era 4.0 mean that various things must prioritize convenience and efficiency in carrying out daily work such as carrying out automatic maintenance and control in the home. This has made many people able to produce various forms of technology that can be controlled automatically and help with work. people who can't take up much time. OT is a technology built to provide ease of work that can be connected to each other using the internet. One use of IoT technology is in the household sector to feed ornamental fish according to need and monitor remaining feed. This tool is designed for NodeMCU as control and an internet connection that is integrated with the Blink application. This tool consists of an HC-SR04 sensor input and a DS3231 RTC timer. The output of this tool uses a servo motor to open and close the contents of the fish feed. Arduino IDE software is used in NodeMCU coding and the Blynk application is used to connect the smartphone and NodeMCU. Based on the results of testing carried out, the system success rate has an average of 95% success. Meanwhile, the average delay is 0.052367 milliseconds.    

Pengukuran jarak yang akurat merupakan komponen kunci dalam berbagai aplikasi teknologi termasuk robotika, sistem keselamatan, dan kontrol industri. Penelitian ini bertujuan untuk mengevaluasi keakuratan pengukuran jarak benda menggunakan sensor ultrasonik HC-SR04 yang dikendalikan oleh mikrokontroler NodeMCU ESP8266. NodeMCU ESP8266 dipilih karena integrasi Wi-Fi yang memungkinkan data dikirim secara nirkabel ke server untuk analisis lebih lanjut. Metode penelitian ini meliputi pengujian sensor ultrasonik pada berbagai jarak dan kondisi lingkungan untuk mengetahui keakuratan dan konsistensi hasil pengukuran. Hasil pengujian menunjukkan bahwa akurasi sensor ultrasonik menurun seiring dengan bertambahnya jarak pengukuran. Selain itu, kondisi lingkungan seperti suhu, kelembaban, dan permukaan benda juga mempengaruhi keakuratan pengukuran. Oleh karena itu, diperlukan kalibrasi tambahan untuk memastikan ketepatan pengukuran dalam kondisi lingkungan yang bervariasi. Penelitian ini menyimpulkan bahwa sensor ultrasonik berbasis NodeMCU 8266 dapat digunakan sebagai solusi yang efektif untuk aplikasi pengukuran jarak, namun kalibrasi dan penyesuaian diperlukan untuk menjamin keakuratan data pada berbagai kondisi. Hasil ini memberikan kontribusi penting terhadap pengembangan sistem otomasi yang lebih cerdas dan responsif.

As time goes by, the rapid development of technology has brought various conveniences to people's daily activities.  An example of the continuation of technology is microcontrollers and electronic devices that can be connected to the network. One of them is the industrial sector in the PLTS plant at the 7 Mwp On-Grid PLTS Pt. Infrastructure Terbarukan Cemerlang Sengkol which has PV Box generating equipment that requires temperature and humidity control to determine the cause of corrosion that occurs in the PV Box.This study is intended as a solution in monitoring PV Box generating equipment. This technology development uses the Internet of Things (IoT) which combines the physical and virtual worlds. In this research, the method used is the experimental measurement method, making the system created more real and detailed. In research using DHT11 equipment which has the advantage of being able to estimate temperature and humidity. NodeMCU ESP32 as a microcontroller connected to the blynk platform via the internet functions to manage hardware, show evidence of sensors, secure data, depict data, and others. The results of the research on designing a temperature and humidity monitoring system at the 7 Mwp On-Grid PLTS Pt. Infrastructure Terbarukan Cemerlang Sengkol were successfully created and produced positive effects by being monitored using the blynk platform. This research was carried out in real time using a cell phone wherever you are. This research shows that temperature measurements from the DHT11 sensor obtained an average temperature of 31.78%, while the average humidity value was 85.96%, which indicates that the room being measured had high humidity. By considering these two findings, it can be concluded that the cause of corrosion in the room is high humidity and redox reactions from various substances in the environment.

Innovation in robotics and the Internet of Things is a technological trend that continues to be developed, including in transportation innovations, such as a car. What is developed in this research is the development of the application of robots and the Internet of Things (IoT) in a mini car prototype design which can be remotely controlled as well. This prototype design uses the engineering design process method which integrates all supporting devices in the form of NodeMCU with ESP8266 base as a control center that allows communication between various sensors and actuators with the internet, TT Motor Gear as an actuator and L298n as an output translator. This mini smart car is controlled using Blynk as an internet-connected controller and for remote control of car movement using a smartphone. The results of this study are the average remote control capability has a car movement delay of 0.87 seconds and 100% of cars move in all directions. The better the internet connection, the more stable the movement of the car to be driven remotely.