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All Journal Journal of Engineering and Management in Industrial System Sinkron : Jurnal dan Penelitian Teknik Informatika METHOMIKA: Jurnal Manajemen Informatika & Komputerisasi Akuntansi Brilliance: Research of Artificial Intelligence sudo Jurnal Teknik Informatika International Journal of Multidisciplinary Sciences and Arts SAINTI: Majalah Ilmiah Teknologi Industri Majalah Ilmiah METHODA Journal of Telecommunication and Electrical Scientific Jurnal Pengabdian Cendikia Nusantara PERFECT: Journal of Smart Algorithms DCS: Jurnal Pengabdian Masyarakat PATRIOTIK: Jurnal Inovasi dan Pemberdayaan Masyarakat Global Advances in Science, Engineering & Technology (GASET)
Erwinsyah Sipahutar
Politeknik ATI Padang
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Mathematics Medicine & Pharmacology Public Health Social Sciences Other

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Design and Implementation of a WiFi Manager System on the ESP8266 Module for IoT Applications Rahmatul Nisa; Eka Dodi Suryanto; Erwinsyah Sipahutar; Arie Budiansyah; Rudi Arif Candra
Global Advances in Science, Engineering & Technology (GASET) Vol. 1 No. 2 (2025): Global Advances in Science, Engineering & Technology (GASET), Article Research
Publisher : Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/gaset.v1i2.248

Abstract

The rapid growth of Internet of Things (IoT) technology has increased the demand for flexible and user-friendly wireless connectivity in embedded systems. One of the most widely used modules in IoT applications is the ESP8266, which integrates a microcontroller and WiFi capability in a compact and low-cost platform. Despite its advantages, WiFi configuration on the ESP8266 is commonly implemented using static credentials that are hardcoded into the firmware. This approach requires recompilation and reprogramming whenever network parameters change, making it inefficient and impractical for end users and large-scale deployment. This research proposes the design and implementation of a WiFi Manager system on the ESP8266 module to enable dynamic WiFi configuration without modifying the firmware. The proposed system allows the ESP8266 to automatically switch to Access Point (AP) mode when it fails to connect to a previously stored network. Users can then configure WiFi credentials through a web-based interface using a standard web browser. The configuration data are stored in non-volatile memory and used to reconnect the device in Station (STA) mode once a valid network is detected. The research methodology includes system design, firmware development using the Arduino platform, and functional testing to evaluate connectivity performance and reliability. Experimental results show that the WiFi Manager system successfully simplifies the WiFi configuration process, achieves a high connection success rate, and provides stable reconnection after power reset. The proposed approach enhances usability, deployment flexibility, and scalability of ESP8266-based IoT devices.
Design and Performance Analysis of a Low-Cost ESP32-Based NAT WiFi Repeater for Indoor IoT Networks Oktrison; Dirja Nur Ilham; Rudi Arif Candra; Erwinsyah Sipahutar
Global Advances in Science, Engineering & Technology (GASET) Vol. 1 No. 2 (2025): Global Advances in Science, Engineering & Technology (GASET), Article Research
Publisher : Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/gaset.v1i2.249

Abstract

The rapid proliferation of indoor Internet of Things (IoT) systems has intensified the need for cost-effective and energy-efficient wireless coverage extension solutions. Conventional commercial WiFi repeaters are often over-provisioned in terms of hardware capability and power consumption, making them unsuitable for small-scale IoT laboratories and energy-constrained environments. Although microcontroller-based platforms such as the ESP32 have been widely used for IoT gateways, their systematic evaluation as Network Address Translation (NAT)-based WiFi repeaters remains limited. This paper presents the design, implementation, and experimental performance evaluation of a low-cost ESP32-based NAT WiFi repeater for indoor IoT networks. The proposed architecture operates in dual-mode (Station + Access Point) configuration using a single 2.4 GHz radio interface and software-based NAT forwarding. Hardware optimization, including Bluetooth deactivation and transmission power tuning, is applied to reduce energy overhead. Experimental measurements conducted in an indoor laboratory environment evaluate throughput, latency, received signal strength indicator (RSSI), and power consumption. Results indicate that the proposed system achieves 15–35 Mbps throughput under single-client conditions, with an average latency increase of 3–8 ms compared to direct router connections. The repeater improves signal strength by up to 18 dB in weak-coverage areas, extending effective indoor coverage by approximately 10–20 m. Measured power consumption remains below 1.2 W during active forwarding, significantly lower than typical commercial repeaters. The main contribution of this work lies in providing a quantified energy–performance characterization of a microcontroller-based NAT repeater.
Power Efficiency Evaluation of Low-Cost IoT Repeater in Indoor Wireless Networks: Politeknik Aceh Selatan Campus Case Study Erwinsyah Sipahutar; Alfi Hafizh; Rial Fauza; Rudi Arif Candra
Global Advances in Science, Engineering & Technology (GASET) Vol. 1 No. 2 (2025): Global Advances in Science, Engineering & Technology (GASET), Article Research
Publisher : Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/gaset.v1i2.252

Abstract

Low-cost Wi-Fi repeaters are increasingly deployed in smart campus environments to enhance indoor wireless coverage; however, their energy performance under realistic traffic conditions remains insufficiently quantified. This paper presents a comprehensive experimental evaluation of the power efficiency of an ESP8266-based IoT repeater operating in simultaneous Access Point and Station (AP+STA) mode over IEEE 802.11n (2.4 GHz). Unlike prior studies focusing primarily on protocol-level optimization or simulation-based relay models, this work provides hardware-level, real-time power characterization under controlled multi-client traffic scenarios. Experimental measurements demonstrate that average power consumption increases from 0.26 W (78 mA) in idle mode to 0.60 W (182 mA) with a single active client and up to 0.87 W (264 mA) under five-client high-load conditions. The maximum observed throughput reaches 18.4 Mbps, while energy per transmitted bit degrades from 0.032 µJ/bit to 0.047 µJ/bit as traffic intensity increases, revealing a measurable efficiency loss due to simultaneous packet reception and retransmission. A near-linear correlation (R² > 0.94) between traffic load and power consumption is identified, enabling the derivation of an empirical energy–performance model. The findings provide quantitative insight into the trade-off between coverage extension and energy demand in low-cost IoT repeaters. The proposed evaluation framework and empirical model support energy-aware deployment strategies for smart campus 
Redesain Tata Letak Fasilitas Produksi IKM Virgin Coconut Oil di Kota Pariaman Syamsul Anwar; Rizki Alfi; Verra Syahmer; Nadya Rishelin; Kushisa Atta Jaeba; Tosty Maylangi Sitorus; Adlina Safitri Helmi; Erwinsyah Sipahutar
PATRIOTIKA: Jurnal Inovasi dan Pemberdayaan Masyarakat Vol 2 No 1 (2026): May 2026
Publisher : Universitas Nahdlatul Ulama Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The production facility layout plays a vital role in enhancing the operational performance of Small and Medium Enterprises (SMEs). An SME in the Virgin Coconut Oil sector currently faces efficiency constraints due to an unorganized production flow. This Community Service Program (PKM) aims to redesign the SME's production facility layout to make it more effective, efficient, and compliant with sanitation standards. The implementation method consisted of three integrated stages: (1) field observation and problem identification, (2) designing a proposed layout using From-To Chart, Activity Relationship Chart and Activity Relationship Diagram instruments, and (3) socialization, design handover, and program evaluation. The result of this program is a new layout design featuring a U-shaped flow that minimizes material movement time while integrating ergonomic principles and work environment sanitation. Evaluation and feedback from the partner indicated a high level of acceptance, as the design successfully addressed the SME's operational needs. This redesigned layout is expected to serve as a strategic reference for related SMEs in optimizing production space and improving productivity sustainable.
Co-Authors Adlina Safitri Helmi Alfi Hafizh Anugreni, Fera Arie Budiansyah Arif Milando Setiawan Balkhaya, Balkhaya Budhi Santri Kusuma Candra, Rudi Arif Candrianto Candrianto, Candrianto Eka Dodi Suryanto Elfina, Sri Evalina, Noorly Faisal Irsan Pasaribu Fardiansyah, Fardiansyah Hardisal, Hardisal Hutasuhut, Abdul Azis Ihsan Ilham, Dirja Nur Irana Dewi Jamsan, Firdaus Khairuman Man Kushisa Atta Jaeba M. Arifin Mouludi, Isra Muhammad Khoiruddin Harahap Mutiara Novennica Nadya Rishelin Nasution, Elvy Sahnur Ningsih, Radna Nuqsyahbandi, Nuqsyahbandi Oktrison Oktrison Oktrison Oktrison, Oktrison Pasaribu, Faisal Irsan Rahmatul Nisa Rial Fauza Rizki Alfi Rizky, Firahmi Syamsul Anwar Tobing, Muhammad Zakirullah Tosty Maylangi Sitorus Verra Syahmer William Sutanto