JURNAL TEKNOLOGI INDUSTRI

Prototipe Smartclass: Sistem Pengaturan Suhu AC Otomatis Menggunakan Mikrokontroler Dan Sensor DHT-22 Di Universitas Dirgantara Marsekal Suryadarma

Reza Para Adilla Ramadhany — 2026-03-09

Thermal comfort in lecture rooms is an important factor in supporting the effectiveness of learning in higher education. Manual operation of Air Conditioners that is still applied in various educational institutions shows limitations in responding to changes in environmental conditions dynamically. This study aims to develop a prototype of an automatic Air Conditioner temperature control system based on Wemos D1 Mini microcontroller and DHT-22 sensor integrated with the Home Assistant platform to support the Smartclass concept at Universitas Dirgantara Marsekal Suryadarma. An experimental method with an Internet of Things prototype development approach was applied through stages of literature study, hardware and software design, implementation, and system testing. The test results show that the DHT-22 sensor is able to read temperature with a very good level of accuracy, producing an average error of 0.93% for indoor conditions and 0.98% for outdoor. The Infrared transmitter module functions optimally at an effective distance of up to 7 meters with a 100% success rate in sending control commands. The system is proven to be able to maintain room temperature stability according to the setpoint determined automatically without requiring manual intervention. Integration with Home Assistant enables real-time remote monitoring and control, creating a comfortable learning environment while increasing energy efficiency in modern classrooms.

Perancangan Sistem Absensi Otomatis Mahasiswa Berbasis RFID Terintegrasi Google Spreadsheet dan Smart Door Lock

Nadia Putri Pardani — 2026-03-09

Attendance systems play an important role in academic management as they relate to discipline and the validity of student presence. However, manual attendance methods remain vulnerable to fraud, such as proxy attendance, and are not integrated with physical room access control. This study designs and evaluates an RFID RC522-based attendance system integrated with a smart door lock using ESP32 within a cloud-based IoT architecture. Experimental testing was conducted on lecturer and student cards using parameters including success rate, False Accept Rate (FAR), False Rejection Rate (FRR), and system response time. The system implements a cloud-based whitelist mechanism through Google Spreadsheet and infrared sensor verification to validate physical access. The results show a 100% success rate in UID reading and data logging with a FAR of 0%. The FRR reached 33.33% for lecturer cards and 6.67% for student cards, while the response time ranged from 7–10 seconds due to cloud communication latency. The integration improves attendance accuracy and room access security, although response time and system stability still require optimization..

Sistem Pemetaan Lokasi Ruang Kelas di Kampus A Universitas Dirgantara Marsekal Suryadarma

Thalbiyatul Ilmiyah — 2026-03-09

The use of information technology in higher education plays an important role in providing fast and easily accessible information services. One common problem is the difficulty in finding classroom locations and accessing course schedule information efficiently. Conventional information media are considered less interactive and less effective in addressing these needs. This study aims to design and implement a touchscreen based system for classroom location mapping and student course schedules at Campus A of Universitas Dirgantara Marsekal Suryadarma. The system is developed as a standalone desktop application that can operate offline without requiring an internet connection. The system design emphasizes simple navigation and comfortable user interaction on touch-screen devices. The research method includes system design, implementation, and evaluation. System testing consists of functional testing using the Black Box method, response testing by measuring the delay between touch input and visual system response, and usability testing using the System Usability Scale (SUS). The results show that the system demonstrates good responsiveness with delay values ranging from 174 to 249 ms, which are within acceptable limits, and achieves an average SUS score of 82, indicating good usability. Based on these results, it can be concluded that the developed system functions properly, is responsive, and is easy to use as an interactive information medium in the campus environment.

Implementasi Sistem Kontrol dan Monitoring PH dan Suhu Air Pada Sistem Smart Aquaponic Berbasis Mikrokontroler Esp32

Syaffa Widyadari — 2026-03-09

Aquaponic systems represent a sustainable agricultural approach that integrates fish cultivation and plant production within a recirculating water ecosystem. The stability of water quality parameters, particularly pH and temperature, is essential for maintaining system productivity. Manual monitoring and control are often inefficient and may lead to parameter fluctuations. This study aims to design and implement an Internet of Things (IoT)-based monitoring and control system for water pH and temperature using an ESP32 microcontroller. The system utilizes a pH 4502C sensor and a DS18B20 temperature sensor to monitor water conditions in real time. Data are processed by the ESP32 and transmitted via the internet, supported by Telegram-based notifications and automatic control using relay modules to maintain pH within 6.5–7.5 and temperature within 24–28°C.System testing was conducted over three days with data collection every two hours. Sensor validation was performed by comparing sensor readings with calibrated digital measuring instruments as reference standards, followed by the calculation of relative error and accuracy percentages. The results show that the pH sensor achieved an accuracy of 92–95% with an average error of ±0.3 pH, while the temperature sensor reached an accuracy of 98–99% with an average error of ±0.2°C. The system demonstrated a response time of less than 5 seconds and a 100% data transmission success rate. The integration of IoT monitoring and ESP32-based automatic control validated within a Recirculating Aquaculture System (RAS) environment constitutes the main contribution of this study.

Analisis Pengaruh Reflektor terhadap Distribusi dan Intensitas Cahaya pada Sistem Pencahayaan LED SMD

Yahya Ayasy — 2026-03-09

The demand for efficient and energy-saving lighting systems continues to increase due to the growing number of human activities in indoor and outdoor environments. Light Emitting Diode (LED) technology is widely used because of its high energy efficiency and long lifespan. However, the wide beam angle of LEDs often causes a portion of the emitted light to disperse and not be effectively utilized. This study aims to analyze the effect of reflector implementation on improving light intensity and distribution in LED-based lighting systems. This research employed an experimental method by designing a lighting system using Surface Mount Device (SMD) LEDs. Two configurations were tested: LEDs without reflectors and LEDs equipped with reflectors. Light intensity was measured using a lux meter at a fixed measurement distance with two reflector angle variations of 120° and 130°. The data were analyzed comparatively to evaluate the improvement in light intensity and lighting efficiency.The results show that the LED without a reflector produced an average light intensity of 321 lux. The use of a reflector with a 120° angle increased the light intensity to 660 lux (105.61% improvement), while the 130° reflector produced 483 lux (50.47% improvement). These results indicate that reflector implementation can significantly improve light distribution efficiency without increasing power consumption.

Perancangan Sistem Kendali Temperatur dan Monitoring Tungku Pembakaran Sampah Berbasis IoT Menggunakan NodeMCU ESP8266 dan Sensor DS18B20 dengan Kontrol PWM Adaptif

Mohammad Yunus — 2026-03-09

Waste management through open burning is still widely practiced by communities; however, the process is often inefficient due to unstable temperature fluctuations and the production of dense black smoke caused by incomplete combustion. This study aims to design an automatic temperature control and remote monitoring system for a waste incineration furnace based on the Internet of Things (IoT) to improve combustion efficiency. The research employed an experimental approach involving hardware design using a NodeMCU ESP8266 microcontroller, a DS18B20 temperature sensor, and an AC Light Dimmer module based on Pulse Width Modulation (PWM) to dynamically regulate fan speed. The system was also integrated with a Telegram-based interface for real-time temperature monitoring. Experimental results over a 75-minute testing period showed that the automatic mode achieved a maximum temperature of 132.45°C, which is higher than the manual mode that only reached 126.94°C. The implementation of PWM control enabled adaptive oxygen supply regulation, increasing the combustion temperature by 5.51°C and accelerating the reduction of black smoke. Therefore, the proposed IoT-based temperature control system successfully improves combustion efficiency while enabling convenient remote monitoring for operational supervision.