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All Journal RESISTOR (Elektronika Kendali Telekomunikasi Tenaga Listrik Komputer) Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Electron: Jurnal Ilmiah Teknik Elektro Prosiding Seminar Nasional Inovasi Teknologi Terapan Jurnal Inovasi Teknologi Terapan Jurnal Teknologi dan Rekayasa Alat Berat (JTRAB)
Surojo
Politeknik Manufaktur Negeri Bangka Belitung
Agriculture, Biological Sciences & Forestry Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Rancang Bangun Sistem Pengendalian Pencahayaan dan HVAC Berbasis Internet of Things (IoT) Muhammad Apriliansyah; Yulizar Rizkiandi; Surojo; Ade Putra Maulana
ELECTRON Jurnal Ilmiah Teknik Elektro Vol 6 No 2: Jurnal Electron, November 2025
Publisher : Jurusan Teknik Elektro Fakultas Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/electron.v6i2.422

Abstract

— In this modern era, numerous buildings require effective and intelligent energy management solutions. An automatic control system for lighting and HVAC based on the Internet of Things (IoT) has been developed with the aim of improving energy efficiency in learning spaces. The system is designed to ensure the lighting intensity meets the standards set by the Ministry of Energy and Mineral Resources (ESDM) (≈250 lux), with an ideal room temperature of 22°C–26°C. The device consists of five Wemos D1 Mini units connected to DHT22 sensors to detect temperature and humidity, and BH1750 sensors to measure light intensity. All components are centrally controlled using an ESP32 microcontroller. Data is transmitted via MQTT protocol, which can be monitored in real-time through Blynk application. The implementation method includes literature study, prototype design and assembly, programming, hardware and electrical assembly, performance testing, evaluation, and final project reporting. This system allows five lamps and one air conditioner to operate automatically according to predefined parameters. The test results show that the light intensity reached 264.8 lux in the morning and 263.9 lux in the afternoon with four lamps on, which meets the classroom lighting standard. Meanwhile, the HVAC test produced an average room temperature of 30.6°C, which did not significantly affect energy efficiency. However, the system was still able to reduce power consumption by approximately 39% compared to manual operation. The implementation of IoT in this system is expected to support the realization of smart buildings that are more efficient and environmentally friendly
WATER HEATER BERTENAGA MATAHARI MENGGUNAKAN REFLEKTOR Tia Fatiha; Muhammad Fajri Rinaldy; Ocsirendi; Surojo
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 2 No. 01 (2022): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

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Abstract

Indonesia is one of the countries in the world that is crossed by the equator that cause Indonesia has a duration of 12 hours (or all day). Hence, the sun can be alternative energy. For instance, it can be used for heating water. Water heaters circulating in the market are still priced in quite an expensive range, so innovation is needed. In this research, a tool is made namely a Solar Water Heater which can track the direction of the sun's rays with the addition of a reflector to reflect sunlight to get optimum heat. This study aims to see the difference between a continuous water cycle where the pump will continue to pump water into the tank through a hot cross-section with a delayed water cycle where the pump will stop for 10 seconds so that the water sits on the copper pipe first. Based on the test results, it was found that the Solar Water Heater can heat water in the tank up to 47.35 degrees Celsius in unstable weather and the optimum method for heating the water is the continuous method which has a difference of 6,47 degrees Celsius with the delay method.
PERANCANGAN SISTEM CHARGING BATERAI DENGAN DC-DC CONVERTER BERBASIS PANEL SURYA Supriadi jumandi; Irsan Adiansyah; I Made Andik Setiawan; Surojo Surojo
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 2 No. 01 (2022): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

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Abstract

This study aims to create a solar panel-based battery charging system with a buck boost converter as a control component. The method used is a quantitative method, namely by means of experiments and data collection on each component. The solar panel component used is 100 Wp and can produce a maximum voltage of 12,6 volts. The voltage from solar panels is used as a source of battery charging. The battery used is a 12V 7Ah. In the battery charging process, a buck boobt converter is used as a voltage controller that can increase or decrease the voltage from an unstable solar panel. The voltage used in the battery charging process, the faster the battery will charge. The time required to charge the battery from a voltage of 11,49 volts to 12,48 volts is 80 minutes.
PENGIRIMAN DATA MENGGUNAKAN NRFT24L01+LA+PA DENGAN JARAK 200M ajie pangestu; Juni Marwanto; Indra Dwisaputra; Surojo Surojo
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 2 No. 01 (2022): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

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Abstract

Wireless Sensor Network (WSN) is a wireless network infrastructure that uses sensors to monitor physical or environmental conditions such as temperature, sound, vibration, electromagnetic waves, pressure, movement, and others. In this study, considerations were made in choosing the nrf24l01+LA+PA component, namely how far the data transmission distance was sent. The value measurement uses the mpu-6050 sensor as data sent via nrf24l01+LA+PA. With the accuracy of the values ​​issued by the mpu-6050 sensor. In testing the tool using two scenarios so that there are differences in environmental conditions and the distance traveled.
Analisis Kompensasi Daya Reaktif pada Motor Slip-Ring Tiga Fasa Dengan Beban 1,6 Nm dan 2,1 Nm Ilham Faqih; Haris Gibran Rizantha; Surojo Surojo
Jurnal Inovasi Teknologi Terapan Vol. 4 No. 2 (2026): Jurnal Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/jitt.v4i2.466

Abstract

Induction motors are widely used in industrial applications due to their favorable operating characteristics and ease of speed control. However, they exhibit a relatively low power factor caused by a high demand for inductive reactive power. This study aims to improve the power factor of a three-phase slip-ring induction motor through reactive power compensation using a capacitor bank. Tests were conducted at load conditions of 1.6 Nm and 2.1 Nm, utilizing a capacitor bank with eight activation levels and a total capacitance range of 0–30 μF. The results indicate that without compensation, the power factor was 0.29 and 0.33 for the respective load conditions. Optimal compensation was achieved using a combination of switches 2, 3, and 4 (total capacitance of 28 μF), which improved the power factor to 0.83 at a 1.6 Nm load and 0.89 at a 2.1 Nm load, while simultaneously reducing the line current to near-minimum values. Conversely, activating all switches (30 μF capacitance) resulted in over-compensation, causing the load characteristics to become capacitive; consequently, the power factor dropped to 0.50 and 0.43, accompanied by an increase in line current. The findings demonstrate that selecting the appropriate capacitor bank capacity can effectively improve the power factor and reduce line current in slip-ring induction motors.
Analisis Kompensasi Daya Reaktif terhadap Faktor Daya Motor Induksi Menggunakan Bank Kapasitor Yosar Leman; Sasha Avrilia; Surojo Surojo
Jurnal Inovasi Teknologi Terapan Vol. 4 No. 2 (2026): Jurnal Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/jitt.v4i2.467

Abstract

Induction motors are the most widely used electrical machines in industry and are classified as inductive loads that absorb significant reactive power, resulting in a low power factor. A low power factor increases line current, causes greater distribution losses, and may incur penalty charges from utility companies. This study experimentally analyzes the effect of a switchable capacitor bank on the power factor and line current of a three-phase slip-ring induction motor under three loading conditions (M = 1.6 Nm, 1.8 Nm, and 2 Nm) at a supply voltage of 380 V / 50 Hz. Eight capacitor bank switching levels ranging from 0 to 1,350 VAR were tested. The results show that the power factor improved significantly from 0.23–0.28 (no compensation) to 0.53–0.55 at the optimal level (1+2+3+4), while the line current decreased by up to 53% from 1.57–1.72 A to 0.73–0.82 A. The motor current remained unaffected by compensation, confirming that capacitive compensation only reduces reactive current on the supply side. Over-compensation was also observed when excessive capacitance was applied, causing the power factor to deteriorate. These findings confirm that proper capacitor bank sizing is critical and must match the reactive power demand at each load condition.
RANCANG BANGUN LOKER PENGAMAN PENITIPAN OTOMATIS MENGGUNAKAN SISTEM SPECIAL CODE Nafis Syaefullah; Shela Hermawan; Surojo Surojo; Valentin Vina Ratnapuri
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 6 No. 1 (2026): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

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Abstract

Conventional storage lockers had security limitations because they relied on physical keys that could be lost, damaged, or misused. This study aimed to design and implement an automatic locker security system using a special code method for user authentication. The system was developed using an ESP32 integrated with a keypad, a 16×2 LCD, a magnetic reed switch, a relay, a solenoid door lock, a buzzer, LEDs, and the Blynk application for monitoring and access management. The research method consisted of system planning, hardware and software design, implementation, and functional testing of all system components. The testing results showed that the proposed system successfully performed access code verification, automatic locking and unlocking, password modification, forced-entry detection, and system recovery. Implementing the special code method improved locker security, simplified user operations, and enhanced the efficiency of storing and retrieving belongings compared with conventional locker systems.
Co-Authors ., Yudhi Aan Febriansyah Ade Putra Maulana Ahmat Susilo ajie pangestu Alhuda ash Shiddieqy Andrea Hera Andini Bahiuddin, Irfan Dinda Amalia Azahra Dwi Meilani Eko Sulistyo Fajri Fatur Rivando Felixtianus Eko Wismo Winarto Gerardus Kristo Prima Gustiar Haris Gibran Rizantha Harjono I Made A Setiawan Ilham Faqih Indah Rahmadini Indra Dwisaputra Irsan Adiansyah Juni Marwanto Khoiriah Sari Krisna Pratama M. Hilmi M.Isra' Nurcahya Kuncoro Made Andik Setiawan Mandala, Wirawan Widya Maryani Supatria monica Muhamat Sarwanto Muhammad Apriliansyah Muhammad Fajri Rinaldy Muhammad Haz Fatahillah Alfaridsi Muhammad Iqbal Nugraha Nafis Syaefullah Niken Ananda Ocsirendi Pajri Harnedi Panji Waskita Pratama, Handika Yoga Raden Rizki Alkawesar Ratika Ayu Reza Ramadhan Rizkia Meilani Rosidah Santosa, Nugroho Sasha Avrilia Sayu Pratiwi Setiawan, Widia Shela Hermawan Silvia Syavira Sindi Anggira Sukir Alida Saputra Sulistiarawati Supriadi jumandi Tia Fatiha Valentin Vina Ratnapuri Wulandari, Niki Yosar Leman Yulhan Putra Sasuna Yulizar Rizkiandi Zanu Saputra