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All Journal JOURNAL OF APPLIED INFORMATICS AND COMPUTING Jurnal Tekno Kompak Piston: Journal of Technical Engineering JOURNAL OF INFORMATION SYSTEM RESEARCH (JOSH) Journal of Applied Science, Engineering, Technology, and Education Dulang: Jurnal Pengabdian Kepada Masyarakat
SINAMBELA, EKA STEPHANI
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Aerospace Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences Other

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Journal : Piston: Journal of Technical Engineering

 1 
Sistem Pengendalian dan Pemantauan Terpusat pada Perangkat IoT Terdistribusi Sinambela, Eka Stephani; Simatupang, Frengki; Wowiling, Gerry Italiano; Sigiro, Marojahan Mula Timbul; Manalu, Istas Pratomo; Silalahi, Sari Muthia; Siagian, Pandapotan
Piston: Journal of Technical Engineering Vol. 8 No. 1 (2024)
Publisher : Program Studi Teknik Mesin Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/pjte.v8i1.48473

Abstract

Perkembangan pesat Internet of Things (IoT) telah memungkinkan berbagai aplikasi cerdas; namun, pengelolaan banyak perangkat IoT yang tersebar secara manual masih kurang efisien dan memakan waktu. Penelitian ini bertujuan untuk mengembangkan sistem pemantauan dan pengendalian terpusat untuk perangkat IoT yang tersebar dengan menggunakan arsitektur master-agent. Master berfungsi sebagai pusat kendali yang mengumpulkan data dari berbagai agent serta memungkinkan manajemen terpusat melalui API Gateway yang memfasilitasi komunikasi dan kontrol perangkat. Prototipe yang dikembangkan terdiri dari dua mode kontrol: kontrol manual untuk menyalakan dan mematikan lampu melalui antarmuka berbasis web, serta kontrol otomatis untuk pemantauan lingkungan menggunakan berbagai sensor. Hasil pengujian menunjukkan bahwa sistem ini mampu mengelola perangkat IoT secara real-time dengan efektif. Pengujian kontrol manual berhasil mengaktifkan dan menonaktifkan lampu secara jarak jauh. Pengujian kontrol otomatis untuk pemantauan tanaman mencatat suhu lingkungan stabil antara 44–46°C, kelembaban tanah pada 27%, variasi jarak sensor ultrasonik antara 2–15 cm, serta fluktuasi intensitas cahaya antara 29–120 Cd. Hasil ini membuktikan bahwa sistem dapat merespons perubahan lingkungan secara dinamis, seperti mengaktifkan pompa air saat kelembaban tanah rendah atau menyesuaikan pencahayaan berdasarkan data real-time. Dengan menerapkan arsitektur RESTful API dan komunikasi berbasis JSON, sistem ini menawarkan skalabilitas tinggi dan fleksibilitas dalam pengembangan jaringan IoT. Penelitian ini menyimpulkan bahwa sistem pengendalian dan pemantauan IoT secara terpusat meningkatkan efisiensi, fleksibilitas, serta kemudahan dalam pengelolaan perangkat, sehingga dapat diterapkan dalam berbagai bidang seperti smart home, pertanian cerdas, dan otomatisasi industri.
Design of Handoff Communication Sequence Architecture in LoRa Networks Manalu, Istas Pratomo; Simatupang, Frengki; Sinambela, Eka Stephani; Sigiro, Marojohan Mula Timbul; Wowiling, Gerry Italiano; Silalahi, Sari Muthia
Piston: Journal of Technical Engineering Vol. 9 No. 1 (2025)
Publisher : Program Studi Teknik Mesin Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/pjte.v9i1.51408

Abstract

Technological advances have driven the development of IoT-based object tracking systems, where LoRa is an ideal wireless technology due to its long range and low power consumption. Challenges in implementing LoRaWAN, particularly its role in the handoff process between gateways that can disrupt communication, can be overcome by developing a more efficient handoff method. For this reason, this study presents the design of Handoff communication for the LoRa Network. We use two gateways and one transmitter node. The gateway node consists of a LoRa module and an ESP32, while the Transmitter consists of a LoRa module, an Arduino Nano, and a GPS sensor. The RSSI parameter is a determining factor in transferring connectivity paths from GW A or GW B, as it provides an RSSI threshold value of -100 dBm. We successfully designed handoff communication at each Node and conducted a mini-test. The test results show that LoRa can implement handoff techniques at a distance of 0-500 meters. This indicates that the node is in closer range to GW A. The RSSI value of GW1 is in the range of -52 dBm to -98 dBm, while the RSSI of GW2 is in a much weaker range, which is around -120 dBm to -100 dBm. As the distance increases, the RSSI value of GW1 shows a significant decrease, while the RSSI of GW B actually increases. At a distance of approximately 250 meters, there is an intersection point between the RSSI values of the two gateways, marking the optimal handoff point. Thus, this system is able to select the best gateway, provide redundancy, check gateway availability before handoff, and handle handoff failures, thereby improving the efficiency and effectiveness of data delivery.
A Web-Based Navigation Control System for Lake Toba Cleaning Using NodeMCU ESP8266 and Pulse Width Modulation (PWM) Simatupang, Frengki; Manalu, Istas Pratomo; Siagian, Pandapotan; Sigiro, Marojahan Mula Timbul; Wowiling, Gerry Italiano; Sinambela, Eka Stephani; Saragih, Ripandy; Yosheva, Grace; Silaen, Romaito
Piston: Journal of Technical Engineering Vol. 9 No. 1 (2025)
Publisher : Program Studi Teknik Mesin Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/pjte.v9i1.51670

Abstract

Waste pollution in Lake Toba has become a critical environmental issue, threatening both its natural beauty and ecological sustainability. Manual waste collection methods remain limited in terms of efficiency and operational reach. This study aims to design and evaluate a web-based navigation control system for a floating surface-cleaning device utilizing the NodeMCU ESP8266 microcontroller. The system enables real-time control of direction and motor speed through a web interface, employing Pulse Width Modulation (PWM) for precise speed regulation. A prototype-based engineering approach was adopted, encompassing system design, implementation, and performance testing on land and in water environments. The experimental results indicate that the system successfully responded to all navigation commands (forward, backward, turn, pivot, and stop) with 100% accuracy under a stable local Wi-Fi network. Motor performance in water was found to be approximately 15–20% lower than on land due to fluid resistance. Battery endurance tests showed an operational time of approximately 3 hours on land and 2.1 hours in water at a 60% PWM duty cycle. Overall, the system demonstrates effective and flexible performance and holds promise for further development through the integration of sensors, camera modules, GPS-based autonomous navigation, and LoRa communication.
Co-Authors Arlinta Christy Barus Batubara, Indah Sari Frengki Simatupang Istas Pratomo Manalu Manalu, Istas Monika Marpaung, Monika Pakpahan, F. Salmonso Pandapotan Siagian Pandjaitan, Nancy Panjaitan, Goklas Panjaitan, Jessica Purba, Ivani Saragih, Ripandy Siagian, Fabert Jody Manuel Sibarani, Aisyah Ayu Sigiro, Marojahan MT Sigiro, Marojahan Mula Timbul Sigiro, Marojohan Mula Timbul Silaen, Romaito SILALAHI, SARI MUTHIA Simamora, Jenris Simatupang, Jhonathan Wowiling, Gerry Wowiling, Gerry Italiano Yosheva, Grace