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The emergence of Internet of Things (IoT) technology has opened up considerable possibilities for automation systems aimed at enhancing energy efficiency in both home and office settings. This study focuses on the creation and deployment of an IoT-driven Smart Home system utilizing ESP32 for the automatic and manual supervision and regulation of electrical appliances within the Employee Dormitory of the Institute for Lecturer Performance Development (LPKD). The established system employs a Passive Infrared (PIR) sensor for detecting human presence and a Light Dependent Resistor (LDR) sensor to assess the intensity of light in the room. The data from these sensors is analyzed by the ESP32 microcontroller, which controls lights and fans automatically through relay modules based on the surrounding conditions. Furthermore, the system is linked to the Blynk application and the Telegram Bot API to enable remote operation and immediate notifications. The methodological approach taken in this research is Research and Development (R&D) employing a prototyping method. The assessment outcomes show that the system functions reliably, with success rates for sensor detection and appliance management exceeding 95%. The introduction of this system aims to boost electrical energy efficiency, improve user experience, and facilitate the adoption of IoT-centered smart facility management within the LPKD framework.

This research is motivated by the increasing urban activities in Mempawah Hilir District as a Regional Activity Center, which has led to high traffic movement at the intersection of Jl. Raden Kusno – Jl. A. Djaelani – Jl. Raden Sujarwo. The diversity of land use and the meeting of arterial and collector roads create potential traffic conflicts and accident risks. The installation of traffic lights is implemented as a traffic control measure; however, its effectiveness in improving safety and comfort needs further analysis. This study aims to assess traffic safety and comfort conditions after the implementation of traffic lights at the intersection. A quantitative approach was used with primary and secondary data. Primary data were obtained through questionnaires on road users’ perceptions and field observations, while secondary data included traffic accident records from Mempawah Police and spatial development data from Google Earth Pro, Google Maps, Copernicus, and Google Colab. The analysis employed descriptive-comparative, spatial descriptive, and scoring methods. The results show that traffic lights implemented since August 2023 have reduced traffic accidents and improved safety conditions, although not yet optimal compared to the lowest accident rate in 2021. Increased land use activity and traffic volume influence this condition. User perceptions indicate improved comfort internally, but external factors such as road conditions and side obstacles still reduce comfort and safety.

Reliable and sustainable lighting is crucial for supporting practical activities in a military educational environment, particularly in the Engineering Laboratory Workshop (Labtek) of the Naval Academy. The main problem faced is complete dependence on electricity supply from PLN, which is prone to disruptions and outages, thus impacting the safety and effectiveness of technical activities. Therefore, this research aims to design a solar-powered emergency lighting system as an environmentally friendly and efficient alternative lighting solution. This research uses the Research and Development (R&D) method with a case study approach at the Naval Technology Laboratory (Labtek) of the Naval Academy (AAL). The stages include power requirement analysis, direct observation of building and lighting conditions, selection of solar energy system components, and calculation of solar panel and battery capacity. Based on the analysis results, the total emergency power requirement of 1.96 kW can be met using 100 Wp monocrystalline solar panels and 12V 100Ah batteries for energy storage.The system design consists of solar panels, a solar charge controller, batteries, and LED lights that automatically turn on when the power goes out. Simulation results show that the system is capable of providing emergency lighting for 6–10 hours, depending on sunlight intensity and battery capacity. The implementation of this system not only improves the reliability of Labtek facilities but also supports nat ional clean energy policies and long-term operational cost efficiency.

The DH Building of the Electrical Engineering Study Program at Udayana University faces significant challenges in energy efficiency, as it still relies on conventional electrical systems. User negligence, such as forgetting to switch off lights and air conditioners (AC) after use, often results in unnecessary energy waste and increased operational costs. This issue highlights the urgent need for smart solutions capable of automating energy management, reducing waste caused by human error, and supporting the creation of a more efficient and sustainable campus environment. To address this problem, this study designs and implements a smart building system based on the Internet of Things (IoT). The system employs a NodeMCU ESP32 microcontroller as the main processing unit, integrated with a series of sensors including a DHT22 sensor for monitoring temperature and humidity, an MQ2 sensor for smoke detection, a PIR sensor for motion detection, and a PZEM-004T sensor for monitoring energy consumption. Control of electronic devices such as lights and AC units is carried out both automatically and manually through relay modules connected to the system. All sensor data and control functions are accessed via a web interface developed using the Laravel framework and a MySQL database. The testing results indicate that the designed system was successfully implemented and functions as expected. Sensor testing demonstrated high accuracy compared to standard measuring instruments, while the electronic device control system achieved an average response time of approximately 3.6 seconds, proving its reliability. Overall, the system provides a comprehensive solution for energy consumption monitoring and control, while also enhancing comfort and safety in the DH Building, in line with the goals of energy efficiency and facility modernization.

Technology is now increasingly advanced and developing rapidly. Almost every aspect of human life is now assisted by technology, especially computerized technology. This technology has penetrated almost all aspects of life and significantly increased efficiency in completing work. With the existence of computerized technology, many processes that were previously time-consuming and labor-intensive can now be done more quickly, easily, and efficiently. One example of the application of technology in everyday life is the design of a smart cupboard for storing shallots. This smart cupboard is designed to help shallot farmers and sellers store their agricultural products more efficiently. The working system of this tool is similar to the method of storing shallots in traditional huts, but with more sophisticated technology. This smart cupboard can regulate temperature and humidity automatically, which is very important to maintain the quality of shallots. The optimal temperature for storing shallots is between 25º - 30º C, with air humidity around 50% - 60%. If the temperature or humidity in the cupboard does not match the desired conditions, the system will automatically activate the lights and fans to return the temperature and humidity to the desired level. With this automated control system, shallots can be kept fresh for longer, reducing the damage that typically occurs to shallots due to unstable temperature or humidity. The advantage of this smart cabinet is that it can maintain the quality of shallots for a long time, even when stored in large quantities. This greatly assists farmers and traders in reducing losses due to perishable shallots and increasing the efficiency of shallot storage and distribution.  

The advancement of Internet of Things (IoT) technology has significantly transformed traditional homes into intelligent living environments. This study presents the implementation of a smart home automation system utilizing IoT components to control and monitor household devices remotely. The system integrates NodeMCU ESP8266 microcontrollers, sensors (temperature, motion, light), and actuators (relays for lights, fans, and appliances) which are connected through a Wi-Fi network. A mobile application is developed to enable real-time control and monitoring, enhancing user convenience, energy efficiency, and home security. The system also includes automated scenarios such as turning off lights when no motion is detected or adjusting ventilation based on temperature. Testing results show that the system responds within an average delay of less than 1.5 seconds and maintains stable performance across various network conditions. The findings confirm that IoT-based home automation offers a scalable, cost-effective solution to improve the quality of life and resource management. This study contributes to the development of sustainable and intelligent home systems for modern living.

The increase in online buying and selling due to government appeals during the Covid-19 pandemic has created a new habit in society, which also serves to reduce physical contact and prevent the spread of the virus. However, with the increase in delivery of goods, challenges arise in maintaining the cleanliness and safety of received packages. To address this, a smart package receiving system was developed that features automatic sterilization using ultraviolet (UV) lights and disinfectant spraying on incoming packages. This system aims to prevent the transmission of viruses that may be attached to the package. In addition, the system helps monitor and secure packages, especially when the owner is not at home. The system uses a microcontroller as the control center, equipped with an ESP32-CAM camera to document photos of the sender, as well as an ultrasonic sensor to detect whether the package is in the box or not. The process starts when the courier presses the “there is a package” button, which sends an OTP code to the receiver's Telegram. The courier enters the OTP code, places the package in the box, and closes it. After that, the UV lamp turns on for sterilization, the ESP32-CAM photographs the package, and the ultrasonic sensor detects the package status. If the package is detected, a photo notification of the sender is sent to Telegram, informing the recipient that the package is ready for pickup.  

This study aims to develop an intuitive and efficient smart home control system by utilizing hand tracking and speech recognition technologies. These technologies employ the OpenCV, Mediapipe, PyAudio, and Speech Recognition libraries to recognize hand gestures and voice commands in real-time. The system is developed using a Raspberry Pi connected to a webcam and microphone as input devices, and a relay to control electronic appliances. The results show a high accuracy rate at optimal light intensity for hand tracking and a specific distance for speech recognition. This system is implemented in an IoT environment to control devices such as lights and door locks. The research is expected to contribute to the development of smarter and more user-friendly smart homes.

The railway doorstop system functions to increase the safety of road users and avoid accidents at crossings. This journal discusses the design and implementation of a train doorstop system using Arduino Uno with supporting components such as servo motors, LED lights, resistors and the HC-SR04 ultrasonic sensor. The simulation aims to automate the process of closing and opening gate latches based on the presence of trains, with results demonstrating the effectiveness of the system in improving safety at crossings.  

Growing demand for electricity savings has led to the development of an automatic LED emergency light system. It is based on providing light when the power is cut off. Once fully charged, the battery ceases charging, and in the event of a power failure, the LEDs are automatically powered by the battery. The project focuses on two primary functions: it automatically activates during power outages to give illumination, eliminating the need to search for the switch, and the battery rapidly begins recharging as the main power is restored. The emergency light is crucial due to the inconsistent voltage distribution and frequent power outages in operational regions of communities and diverse enterprises. The system includes a power supply that converts 230V AC to 12V DC, a relay that uses a control pulse to alternate between connecting the battery to the LEDs and isolating it, and a rechargeable Li-ion battery that supplies power to the LEDs during blackouts. The parallel-connected LEDs light up during a power outage in the circuits. The circuit architecture shown here serves to mitigate the entire discharge of the battery, hence enhancing the battery's longevity. Key components of the system include a step-down transformer, a bridge circuit to convert AC to DC, a Zener diode to maintain voltage stability, capacitors for energy storage, and various diodes to control current flow. The project highlights the advantages of LED emergency lights, such as efficiency, longevity, and minimal energy waste, though it acknowledges the higher initial cost and temperature sensitivity as disadvantages. The automatic LED emergency light is suitable for use in homes, offices, retail shops, and other commercial settings. The project demonstrates a cost-effective and compact solution that enhances daily life by providing reliable lighting during power failures.

Ship stability problems are one of the causes of ship accidents such as ships that are difficult to control, unbalanced and sinking, either at sea during shipping or during loading and unloading. This is the background for the need to improve ship safety systems to reduce ship accidents. The purpose of this research is to accurately monitor the loading and unloading slope and determine the maximum distance that can be connected to LoRa. The working system of this tool is made with the intention of preventing ship accidents and creating a better sea transportation system. The work process of this tool is done by reading the tilt angle of the ship which will then be read through the LCD screen and the LED lights will light up and the buzzer will sound if it reaches a certain tilt angle. Making it easier for loading and unloading operators to manage their cargo so that the ship remains stable.The methodology and design of the applied scientific work tool system that will be carried out using experimental research methods. Experimental research methods are used to produce certain products, and test their effectiveness. The results of research on this applied scientific work are the accuracy of the gyroscope sensor GY-521 mpu-6050 which is 98.71% with an error of 1.29% and the distance of LoRa Ra-02 SX1278 that can be reached on a stable wireless system is as far as 370m in water and 205m on land. More than that the receiver cannot receive data anymore or is invalid.

Fires can occur unexpectedly, even if you are careful when using equipment that produces fire. However, there are still several sources that cause fires, such as electrical short circuits, gas stoves, burning rubbish, cigarette butts and candles when the lights go out. The aim of this research is to create a tool that can detect fire and temperature in a room and can overcome (minimize) the threat of fire disasters based on a microcontroller and C language. This research uses a Fire Sensor to detect fire, a DHT 11 Sensor to detect room temperature, NODEMCU as microcontroller controlling input and output, Buzzer as a system monitoring tool. The system will be assigned to turn on the extinguishing system that uses a FAN if there is a significant increase in temperature or if the system detects a fire. The output from the Flame Sensor which detects fire will be processed into a microcontroller which has been programmed using C language so that it will produce two states, namely low, namely when no fire is detected, and high when fire is detected. Likewise for the output from DHT11. This tool will give a warning to the buzzer if it detects a fire, and also detects changes in temperature and gives orders to spray the fan if there is a significant change in temperature

This study aims to analyze the power dynamics that occur in the interaction between a clown and a driver at a red light using Michel Foucault's power theory approach. Clowns at red lights are often objects of interest to motorists and pedestrians, but their role in public space is rarely examined from a power perspective. This study uses a qualitative research method with a case study approach to gain an in-depth understanding of the clown's interaction at the red light. Data was collected through participant observation, interviews with clowns, and content analysis from social media that describes these interactions. The results showed that clowns at red lights use various strategies to attract the attention of motorists, such as funny gestures, flashy costumes, and silly actions. However, behind the fun and joy shown by the clown, there is a hidden power structure. Through the use of humorous actions, clowns are able to change the dynamics of public space, divert the attention of motorists from existing traffic rules, and form alternative narratives about that space. This study also shows that the presence of a clown at a red light involves a complex power and knowledge relationship between the clown, the driver, and the general public. Clowns use their symbolic power to control people's perceptions and evaluations of public space, as well as to go beyond the rules and norms that apply. Using Foucault's theory of power, this study provides a new understanding of the clown's interaction at the red light as a form of resistance to existing power. This research also describes how clowns, as actors who are underestimated by many people, can utilize their power to shape and reconstruct meaning and experience in public space.

Electricity is a very important need for the life of many people. Especially with the increasing number of tools that use electricity as a source of energy in this day and age. With the increasing demand for electricity, the more electrical energy that must be issued, especially by PLN. Electricity is also a source of energy that is needed in all activities related to electronics, therefore its use varies greatly. The purpose of making this final project entitled "Installation of Solar Power Generation Devices (PLTS) as a Source of Electrical Energy in the Garden of the Mahktab Building, Panca Budi Campus" is as a form of saving electrical energy in garden lighting. Electrical energy saving is done by utilizing solar cells, batteries as current storage and LED lights which are operated with a control system. The method used in this final project is the design method. The method steps are analysis, design, manufacture and testing. analysis, design, manufacture and testing. The design of the solar cell device as a converter of solar energy into electrical energy which is then stored in the battery.

Electrical equipment plays an important role in everyday life, from households, schools, hotels, offices, to industrial environments. Because it really helps humans in making work easier. The need for automated tools to facilitate human activities, makes the need for smart chips or microcontrollers increasing. A new breakthrough in the world of microcontrollers with the application of Arduino.Especially at SMPN 10 Salatiga, there are fish ponds and garden lights, which you forget to feed or not, while the officers forget to turn off the lights, causing the fish to die and the lights stay on even though it is noon. This study tries to implement Fish Feed Control and  automatic garden lights on and off using Arduino and scheduling, this is so that the fish stay healthy   and the garden lights can turn on or off according to the schedule desired by management. The author designed a garden lamp and automatic fish feed based on a case study at the school. The tool is designed with three sources of tool control. The first manual is pressing the fish feed manual button, the light switch and the reset button. Both semi-automatic, as a fish feeder, light ON/OFF and reset remote control with the Android application. The third auto is scheduled feeds and lights. This tool is designed to manage fish feed and garden area lighting. This tool is practical to use, inexpensive, useful, flexible and easy to build. The classification of this tool is sufficient for the needs of the school garden. Among the advantages of this tool is that it can be controlled remotely effectively 25 m without a hitch using the android application. The author hopes, this tool provides benefits and solves problems in schools.

The purpose of this thesis is to produce tangible results in providing comfort or convenience in controlling electrical appliances, including turning on or off lights at home and controlling other electrical appliances. The method used in making the Design of Control System for Electrical Equipment Using Bluetooth Based on the Atmega 328 Microcontroller is a prototype. This research method consists of several stages, library research, analytical methods, design and implementation methods. The results achieved are reducing the number of fires due to electrical short circuits and increasing aspects of comfort and convenience for users as well as people with disabilities and the elderly, who find it difficult to stand or to reach lights and the implementation of infrastructure devices, where a series of these tools can work after bluetooth devices are available in the community. android smartphones. connected to the bluetooth module connected to the arduino microcontroller. Basically, using the principle of this tool, the user must be able to operate a smartphone based on the Android operating system. The conclusion is that this equipment has been tested and can be used as a controller of power tools with a lightweight android smartphone via a Bluetooth connection without having to press the switch button.

The purpose of this research is to produce tangible results in providing comfort or convenience in turning on or off the night life at home everyday, especially for people who forget to turn off the lights. The method used in making microcontroller-based home lighting control using an android smartphone is. This research method consists of several stages, analysis methods, design methods, implementation testing methods, and maintenance. The results achieved are improving the aspects of comfort and convenience for agencies, where this series of tools works after bluetooth devices are available on android smartphones. connected to a bluetooth module which is connected to the Arduino microcontroller. Basically, the principle of using this tool is that users must be able to operate a smartphone based on the Android operating system. The conclusion of this research is that the Arduino-based light control device using bluetooth can fulfill its function to control the lights properly and the device is designed to be minimalist and safety so it is safe to use.