Prosiding Seminar Nasional Teknoka

Perancangan Saklar Otomatis Menggunakan Microcontroller Berbasis Teknologi Internet of Things (IoT)

Sofia Pinardi, Emilia Roza, Muhammad Alviani, Akbar Shah Rukh Khan — Sun, 28 Dec 2025 00:00:00 +0700

Water and electricity are very vital human needs; it’s necessary to use them efficiently. The use of a water reservoir is a solution, and the machine can be set ON OFF using a float indicator. When the machine is ON, it fills the water, and is full, switch OFF and ON again when the water reaches a certain height. The ON-OFF process of the pump machine automatically occurs when the power plugged in; this condition is very dangerous, causing heat, and empty house, switch is always ON. Remote automatic is required. This automatic uses a quasi-experimental method with three stages, namely making a design, conducting tests, and analysing test results. Internet of Things (IoT) technology, based on a microcontroller, can implement an automatic switch for controlling and operating electronic devices remotely online and in real time via mobile (cellphone). The use of a microcontroller will be configured to connect to the Ubidots application.

Optimalisasi Konsumsi Fuel gas pada Boiler dengan Implementasi Sistem Kontrol Oxygen Excess Auto Cascade

Muhammad Taufik Hidayat, Bambang Irawan — Sat, 27 Dec 2025 00:00:00 +0700

Boilers accounted for 99.8% of total energy consumption at Badak LNG refinery. Of this usage, 15.1% was lost through blowdown, flue gas, and other boiler inefficiencies. The combustion control system was redesigned using a cascade configuration between the excess-oxygen loop (AIC-1) and the air-flow control loop (FIC-1). Each loop was modeled to obtain transfer functions that were then used to simulate responses to possible input disturbances. The simulation results yielded PID parameters that guided on-site loop tuning. In addition, layered logic protection and new alarms were integrated into the control system. As a result, system reliability was validated under external extremes, including abrupt boiler load increases and decreases. The optimization reduced the fuel-to-steam ratio by 0.6 Nm³/ton with the average boiler load over the past year of 207.6 ton/h, this corresponded to a 0.72% reduction in fuel-gas consumption.

Studi Kelayakan Pabrik Dodecylbenzene Sulfonic Acid dari Sulfur Dioksida Pada Gas Buang PLTU

Putri Zahra At Taufiq, Eduardus Budi Nursanto — Sat, 27 Dec 2025 00:00:00 +0700

The increase in population is directly proportional to the demand for energy. Fossil fuels serve as the main energy source in various industries, including electricity generation through PLTU (Steam Power Plant). These plants produce flue gases containing various components, among which sulfur dioxide (SO₂) is a major pollutant whose concentration is strictly regulated. Utilizing SO₂ as a raw material for producing Dodecylbenzene Sulfonoc Acid – a surfactant compound – can reduce SO₂ emissions from PLTU by up ti 98%. The feasibility of this plant was assessed through a techno-economic study using ROI (Return of Investment), POT (Pay Out Time), and BEP (Break Even Point) analyses. The results indicate an ROI of 35.18%, a POT of 2.18 years, and a BEP of 15.76%, demostrating that the proposed plant is economically feasible to establish.

Identifikasi Anomali dan Dampak Perbaikan Sistem Automatic Transfer Switch (ATS) terhadap Kontinuitas Pasokan Listrik di PT. PLN UP3 Tanjung Priok

Sat, 27 Dec 2025 00:00:00 +0700

Disruptions to the Automatic Transfer Switch (ATS) system can reduce the reliability of the electricity supply, especially for priority customers. This study aims to identify anomalies occurring in the ATS system in the PT. PLN (Persero) UP3 Tanjung Priok area. The methods used include field observations, technical inspections of ATS components, switching time measurements, and estimates of unsupplied energy. Anomalies were found at three locations, namely SMU 110 Jakarta, the Water Management Public Works Sub-Department, and the Sunter Environmental Development Supervisory Agency, with the main damage occurring to the rectifier and ATS module. This damage caused automatic switching failure and interruption of the electricity supply during the repair process, resulting in a total energy loss of 330.640 kWh. After repairs were completed, the entire ATS system resumed functioning with a switching time of < 1 second, in accordance with standards. The results of this study indicate that anomalies in ATS components have a significant impact on the continuity of electricity supply, but can be effectively addressed through appropriate technical repairs.

Perancangan Prototipe Sistem Informasi Sejarah dan Wisata Kota Depok Berbasis Web

Sat, 27 Dec 2025 00:00:00 +0700

The city of Depok has a wealth of historical value and tourism potential that has not been properly documented in digital media. The lack of access to related media causes difficulties for the community and tourists. This study aims to design a web-based information system prototype that presents comprehensive and engaging historical and tourism information about the city of Depok. The method used is a descriptive approach, beginning with the stages of needs analysis, system design, and user interface design. The results of this study are interactive visual prototype designs that include historical information and a list of tourist locations. This prototype has been successfully developed and tested, showing positive results in supporting the preservation of history and promotion of tourism in Depok City. User testing using the System Usability Scale (SUS) method resulted in an average score of 89.84, which falls into the ‘Excellent’ category. With this achievement, this digital information system can serve as a starting point for further extensive and sustainable development.

Penerapan E-Commerce untuk Pemasaran Pertanian: Evaluasi Usability, Pengalaman Pengguna, dan Dampak Positif "Gawosa Shop"

Sat, 27 Dec 2025 00:00:00 +0700

Farmers in Gumiwang Village face significant challenges in marketing their harvests. To address this issue, the "Gawosa Shop" e-commerce platform was developed. This study evaluates the platform's usability, user experience (UX), and its impact on sales. Interface testing using the System Usability Scale (SUS) yielded an average score of 83.92, which is categorized as "Excellent." User Experience Questionnaire (UEQ) testing, which assessed six components (Attractiveness, Perspicuity, Efficiency, Dependability, Stimulation, and Novelty), showed results ranging from Good to Excellent. During the implementation period from October 1 to November 5, 2025, Gawosa Shop successfully increased revenue by 21.2% and the total number of orders by 116.7%. These findings indicate that Gawosa Shop is effective, well-received by its users, and provides a positive economic impact for the farmers in Gumiwang Village.

Kalibrasi dan Validasi Sensor pH E-201C-Blue dan TDS Meter V1 pada Sistem Hidroponik Otomatis Berbasis IoT di Aswana Hidroponik

Sat, 27 Dec 2025 00:00:00 +0700

This study aims to calibrate and validate the pH E-201C-Blue sensor and TDS Meter V1 implemented in an IoT-based automatic hydroponic system at Aswana Hydroponic, Purwokerto. The calibration process was carried out using a multi-point method with standard buffer solutions (pH 4, 7, and 10) and TDS solutions ranging from 500 to 1500 ppm to achieve optimal accuracy. An ESP32 microcontroller was used as the main controller and data transmitter to a cloud-based monitoring dashboard. The results showed that after calibration, the sensor achieved high accuracy with a correlation coefficient (R²) above 0.98 and an average error below 5%. These findings indicate that low-cost commercial sensors can provide reliable performance in automated hydroponic system, supporting time efficiency and improving crop productivity at Aswana Hydroponic, Purwokerto.

Otomatisasi Pengatur pH dan Nutrisi pada Tanaman Hidroponik Berbasis Internet of Things di Aswana Hidroponik

Sat, 27 Dec 2025 00:00:00 +0700

This study discusses the design of an automated pH and nutrient control system for hydroponic plants based on the Internet of Things (IoT). The objective of this study to develop a system capable of reading solution conditions and sending data in real time through an IoT platform to facilitate monitoring without manual intervention. The system is designed using an ESP32 microcontroller as the control center, a pH sensor, a TDS meter sensor, and a peristaltic pump for the solution injection process. The sensor reading data is sent to the IoT server using the Blynk platform. The test results show that system is capable of sending valid and consistent pH and TDS data to the Blynk dashboard with an accuracy level ±98%, making it easier for users to monitor the condition of the nutrient solution remotely. This research is the first step towards an efficient and integrated automatic hydroponic control system.