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All Journal Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Multidiciplinary Output Research for Actual and International Issue (Morfai Journal) Jurnal Rekayasa Lampung (JRL)
Suparno
Universitas Cenderawasih
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IOT-BASED MOBILE MANIPULATOR PROTOTYPE USING ESP 32 AND ESP 8266 Rosalina N Revassy; Suparno; Dwi Ramadhana
Multidiciplinary Output Research For Actual and International Issue (MORFAI) Vol. 5 No. 6 (2025): Multidiciplinary Output Research For Actual and International Issue
Publisher : RADJA PUBLIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.18722496

Abstract

This research focuses on the design and implementation of an Arduino-based mobile robot equipped with an ESP32 camera. The primary goal is to develop a mobile manipulator prototype that can be controlled remotely via a mobile or web application. This project also aims to identify the required electronic components, understand their integration with the ESP32 module, and evaluate the ESP32's advantages over the Arduino Uno. The method used is a development research approach, involving literature review on robotics, Arduino programming, and image processing with the ESP32-CAM and ESP8266. The research stages include system design, component selection, mechanical design, and electronic circuit design. Programming code development is carried out iteratively, starting with basic functions such as motor movement and image capture, to more complex functions such as simple object recognition. Testing of the mobile manipulator prototype demonstrates that the hardware and software developed are functional. The robot is capable of motion control, image transmission from the ESP32-CAM to a smartphone, and the ESP8266 can transport light objects. However, there are several challenges, such as overheating of the ESP32-CAM and ESP8266 modules, as well as potential malfunctions in the SG90 servo motor and DC gearbox motor.
Analysis of Voltage Drop and Power Loss Calculations inthe Edelweiss Feeder of PT PLN (Persero) Abepura Customer Service Unit Ekawati Margaretha Ohee; Dultudes Mangopo; Suparno; Oktavianus Kati; Rombe Allo; Semuel Boron Membala; Allo Sarira Pongsapan
Jurnal ASIIMETRIK Jurnal Ilmiah Rekayasa & Inovasi Volume 8 Number 2 (2026)
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v8i2.9965

Abstract

This study evaluates the performance of the 20 kV Edelweiss feeder by analysing transformer loading, voltage drop, and technical power losses in a radial distribution network. The analysis is based on a bus-by-bus electrical model derived from feeder topology, conductor impedance, load current, power factor, and segment length data. Voltage profiles and technical losses are quantified using established three-phase power flow relationships based on Ohm’s law and Kirchhoff’s current law, enabling the assessment of cumulative voltage drop and loss propagation along the feeder. The results show that the feeder maintains a highly stable voltage profile, with a total voltage drop of 41.422 V, equivalent to approximately 0.207% of the nominal 20 kV voltage. Total active and reactive power losses are 7.3103 kW and 4.7821 kVAR, respectively, with more than 96% of these losses concentrated in Bus 2 and Bus 3. The findings demonstrate that technical losses are governed primarily by current accumulation, electrical distance, and topological position within the radial network rather than by conductor length alone. This study contributes a feeder-level understanding of how upstream current aggregation shapes voltage-drop and loss distribution, providing empirical evidence for identifying critical segments in medium-voltage radial distribution systems .
Sistem Keamanan Rumah Berbasis IoT dengan Autentikasi RFID dan Notifikasi Citra ESP32-CAM Theresia Wuri Oktaviani; Rina Fian Agapa; Herbert Innah; Johanis Aryo Bay; Rosalina Revassy; Suparno
Jurnal Rekayasa Lampung Vol. 5 No. 3 (2026)
Publisher : Fakultas Teknik Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrl.v5i3.90

Abstract

Sistem keamanan rumah memerlukan tidak hanya kemampuan mendeteksi akses tidak sah, tetapi juga autentikasi pengguna, dokumentasi visual, dan penyampaian notifikasi jarak jauh. Penelitian ini bertujuan merancang dan mengimplementasikan sistem keamanan rumah berbasis Internet of Things (IoT) yang mengintegrasikan sensor Reed Switch, autentikasi RFID, Arduino Uno, ESP32-CAM, penyimpanan MicroSD, dan notifikasi Telegram. Tiga sensor Reed Switch dipasang pada satu pintu dan dua jendela untuk mendeteksi perubahan kondisi fisik, sedangkan modul RFID MFRC522 digunakan untuk membedakan akses sah dan tidak sah. Ketika akses tidak sah terdeteksi, sistem mengaktifkan alarm lokal, melakukan akuisisi citra menggunakan ESP32-CAM, menyimpan citra pada MicroSD, dan mengirimkan notifikasi beserta citra kepada pengguna melalui Telegram. Hasil pengujian menunjukkan bahwa sensor Reed Switch mampu mendeteksi pembukaan pintu dan jendela pada jarak pemicu 20–40 mm. Mekanisme autentikasi RFID memberikan periode akses aman selama 30 detik bagi kartu terdaftar. Pada kondisi Wi-Fi stabil, citra diterima melalui Telegram dalam waktu 3–6 detik, sedangkan pada kondisi kualitas jaringan menurun, waktu penerimaan meningkat menjadi 8–15 detik. Citra hasil akuisisi juga berhasil disimpan secara lokal pada MicroSD. Hasil tersebut menunjukkan bahwa sistem yang dikembangkan mampu mengintegrasikan deteksi kondisi fisik, autentikasi akses, alarm lokal, dokumentasi visual, penyimpanan lokal, dan notifikasi jarak jauh dalam satu prototipe sistem keamanan rumah berbasis IoT.
Co-Authors Allo Sarira Pongsapan Dultudes Mangopo Dwi Ramadhana Ekawati Margaretha Ohee Herbert Innah Johanis Aryo Bay Oktavianus Kati Rina Fian Agapa Rombe Allo Rosalina nathalia Revassy Rosalina Revassy Semuel B. Membala Theresia Wuri Oktaviani