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INDONESIA
Jurnal E-Komtek
Published by Politeknik Piksi Ganesha Indonesia
ISSN : 25803719     EISSN : 26223066     DOI : https://doi.org/10.37339/e-komtek.v4i2.269
Core Subject : Science, Engineering,
Computer Science & IT Electrical & Electronics Engineering
Jurnal E-Komtek (Elektro-Komputer-Teknik) is a Journal that contains scientific articles in the form of research results, analytical studies, application of theory, and discussion of various problems relating to Electrical, Computer, and Automotive Mechanical Engineering.
Arjuna Subject : Ilmu Komputer (semua kategori) - Visi Komputer dan Pengenalan Pola
Articles 276 Documents
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Design of a Batik Coloring Waste Treatment Tool Using the Electrocoagulation Method with a Capacity of 40 Liters Aris Stiyawan; Nova Suparmanto; Harnandito Paramadharma; Tafrikhatin, Asni; Hendi Purnata
Jurnal E-Komtek (Elektro-Komputer-Teknik) Vol 7 No 1 (2023)
Publisher : Politeknik Piksi Ganesha Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37339/e-komtek.v7i1.1243

Abstract

Batik coloring still uses synthetic dyes, so the disposal of coloring waste should not be careless. Most batik craftsmen process their batik waste by settling the waste liquid for a long time. The process is very ineffective. The purpose of this research is to design a batik processing tool that is cheap and effective. The research method uses the electrocoagulation method. The electrocoagulation method is an electrochemical water treatment. The design of this batik waste treatment tool consists of five parts including: (1) Electrocoagulation Tub, (2) Skimmer, (3) Electrode, (4) Sand Filter, and (5) Studge Drying Bed. This tool works with 900 watts of power with an output of 20-40 volts DC. The capacity of liquid waste is 40 liters. Duration of waste treatment for 2 hours. The electrocoagulation method is able to reduce the values of BOD5, COD, TSS, and TDS in batik dye waste. The pH of wastewater which is still high can be reduced by giving alum.
Geographic Information System for Mapping Polling Station Locations in Parungkuda District Somantri; Kamdan; Mulyana, Azril
Jurnal E-Komtek (Elektro-Komputer-Teknik) Vol 7 No 2 (2023)
Publisher : Politeknik Piksi Ganesha Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37339/e-komtek.v7i2.1245

Abstract

This study aims to develop a Geographic Information System (GIS) that maps the locations of Polling Stations (TPS) for general elections in Parungkuda District. Through literature review, field observations, and interviews with relevant stakeholders, geographical data such as TPS locations and district boundaries were collected and analyzed. In this research, a web-based information system was developed using Mapbox technology to display interactive mapping of the TPS. The outcome is a system that facilitates the public in finding TPS locations and obtaining information on the number of voters and presidential candidates in each TPS. This research has benefits in terms of mapping and accessing TPS-related information, and it is recommended for further development to be widely used in general elections within Parungkuda District. This GIS can improve the efficiency of the election process and provide ease of access for voters to find the appropriate TPS based on their residence.
Development Of Waste Sorting Technology for Pet and HDPE Plastic Bottles For The Production Of Recycled Plastic Seeds Santosa Budiono, Herru; Purnomo, Sigit Joko; Taufik, Ikhwan
Jurnal E-Komtek (Elektro-Komputer-Teknik) Vol 7 No 2 (2023)
Publisher : Politeknik Piksi Ganesha Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37339/e-komtek.v7i2.1365

Abstract

Plastic bottle waste is a problem that always arises. In Indonesia, the processing of plastic bottle waste still needs to be improved. Plastic bottle waste can be converted into plastic pellets with economic value. The type of plastic and the colour must be sorted to get quality plastic pellets. A machine is designed to sort out the types of plastic bottle waste, polyethene terephthalate (PET) and high-density polyethene (HDPE). The result is a prototype plastic biotol waste sorting machine with a 41 kg/hour capacity. The prototype of this machine can sort out plastic bottle waste and those not included in the plastic bottle waste category. The results show that the colour sensor and object sensor work optimally to sort plastic bottle waste according to the program.
The Implementation of the CNN Method on Smart Image Recognition and Identification of Heritage (SIRIH) of Sundanese Traditional Tools Jatnika, Hendra; Yudhi Setyo Purwanto; Mochamad Farid Rifai
Jurnal E-Komtek (Elektro-Komputer-Teknik) Vol 7 No 2 (2023)
Publisher : Politeknik Piksi Ganesha Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37339/e-komtek.v7i2.1375

Abstract

Sundanese is a regional language in West Java. Young people rarely use local languages, so they need to be preserved by using technology. Image processing technology can help the process of strengthening the Sundanese language and culture. Researchers developed Sundanese traditional tools because their existence is not only related to Sundanese language and terms, but also related to philosophy and local wisdom values. This application is called Smart Image Recognition and Identification of Heritage (SIRIH). The development of this android-based innovative application is based on image recognition technology with the CNN method. Based on the test results, the classification accuracy of pre-trained CNN is 98%, and val accuracy at 86%. Accuracy test results on the application show good and maximum results (90%-100%) if the item is in sufficient light, both indoors and outdoors, while dim light will reduce accuracy to around 60%-70%. Blurred images also affect accuracy by up to 50%.
Analysis of Financial Data Descriptions about Investment and the Stock Market Based on Gender and Age Attributes Rachmat Fauzan, Kiagus; Pramono, Agus; Azis, Abdul
Jurnal E-Komtek (Elektro-Komputer-Teknik) Vol 7 No 2 (2023)
Publisher : Politeknik Piksi Ganesha Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37339/e-komtek.v7i2.1416

Abstract

The recent surge in data science or analytics in finance is crucial for informed decision-making in financial operations. Its integration is instrumental in helping businesses mitigate operational risks, identifying and preventing potential threats such as system failures and lapses. The study methodology involves case investigations and tests utilizing K-Means, K-Nearest Neighbors (KNN), and Decision Tree algorithms. Data visualization, using various graphical representations like graphs, diagrams, maps, and other techniques, is essential to simplify data interpretation and foster intuitive analysis. Common forms include heat maps, scatter plots, pie charts, bar graphs, line graphs, and maps, contributing significantly to presenting data comprehensively, offering insightful analyses, and achieving research objectives..
“Basic English”: An Android-Based Teaching Media for Students Grade 7th Built-in Construct 3 Deby Mega Rizkia Riesna; Sigit Sugiyanto; Tito Pinandita
Jurnal E-Komtek (Elektro-Komputer-Teknik) Vol 7 No 2 (2023)
Publisher : Politeknik Piksi Ganesha Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37339/e-komtek.v7i2.1432

Abstract

The use of technology and information in Indonesia is widely spread. Various groups have been reached with gadgets that are pretty sophisticated and can be used for multiple purposes, not only for sending messages or news, listening to music, watching videos or films, and playing online games but can also be used as learning media, especially after the COVID-19 outbreak hit Indonesia. For about two years, educational facilities in Indonesia have been running online. Unfortunately, the use of technology in education is still not optimal. This research aims to help teachers and students optimize technology use in supporting learning and teaching activities. Using Construct 3, an application to learn English for grade 7 students of SMP/MTs was successfully created. The Basic English game contains a summary of material and practice questions that can be accessed and operated using Android on students' cell phones anywhere and anytime.
Designing a Web-Based Student Attendance Information System Using Extreme Programming Methods at the Bandung Praktisi Polytechnic Yudhi Yanuar; Ari Waluyo
Jurnal E-Komtek (Elektro-Komputer-Teknik) Vol 7 No 2 (2023)
Publisher : Politeknik Piksi Ganesha Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37339/e-komtek.v7i2.1464

Abstract

This research aims to design a student attendance information system. In developing the information system, we used the method of observing research objects and conducting literature studies. We used object-oriented modelling with UML tools to describe the student attendance information system. In addition, extreme programming was used to develop the student attendance information system. In creating a student attendance information system using the PHP and MySQL programming languages as the System Management Database, the test results of the student attendance information system at the practitioner Polytechnic can be used well and effectively.
Implementation and Analysis of WiFi Human Interface Device (HID) USB Using ATMEGA32U4 and ESP8266 Gilang Ryan Fernandes; Ika Mei Lina
Jurnal E-Komtek (Elektro-Komputer-Teknik) Vol 7 No 2 (2023)
Publisher : Politeknik Piksi Ganesha Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37339/e-komtek.v7i2.1478

Abstract

Advances in technology have resulted in hacking occurring everywhere. Hacking is the act of illegally accessing data and information. It is not uncommon for many hacking cases to harm various parties due to ignorance. The results of hacking at this time are widespread, one of which is a ransomware virus that can encrypt data, a keylogger is software that can monitor keyboard activity, and a WiFi USB human interface device which is where this attack is a virtual keyboard. This research assembles the components used for Human Interface Device (HID) by utilizing ATMEGA32U4 as a virtual keyboard and ESP8266 as WiFi media. This technique is used to obtain target information and data. This research aims to make people more careful and overcome hacking. It is hoped that people will be more concerned about system and data security. Based on the research results, WiFi HID USB attacks can be dangerous for computer owners who need to be more aware of various hacker attacks because this technique can directly take target access.
Modified Buck Boost DC-DC Converter with Hyeteresis Band on Ocean Wave Emulator Purnata, Hendi; Hera Susanti; Sugeng Dwi Riyanto; Agus Santoso
Jurnal E-Komtek (Elektro-Komputer-Teknik) Vol 7 No 2 (2023)
Publisher : Politeknik Piksi Ganesha Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37339/e-komtek.v7i2.1487

Abstract

Indonesia has the potential of sea wave energy with the second largest coastline having a density of up to 20 kW / m2. Currently, the use of sea wave technology is still at the prototype stage, with several weaknesses such as erratic sea waves, tides and ocean currents so that they can affect the power generated in ocean wave energy. The results of ocean wave energy in mechanical arrays cannot be utilized because of erratic waves. The higher the wave, the greater the power generated and vice versa. If this problem is not resolved, it can cause unstable power output and cause damage to electronic equipment. The solution to this problem is to modify the DC-DC buck boost converter circuit using the Hyeteresis band method, which limits voltage surges below or above to produce the desired voltage in order to maintain constant power and as energy for storage in the storage system. The result of this study is that the performance of DC generators in producing voltage is greatly influenced by speed. At low speeds, the voltage produced by the generator is still too low to charge the battery or in other words cannot be in a perfect charging position, while at maximum speed it produces voltage with Achieve a level sufficient for battery charging. Therefore, control and adjustment of generator speed is key in maximizing battery charging efficiency using a buck-boost converter.
Analysis of Steel Cutting Results Using a Semi-Automatic Oxy-LPG Gas Cutting Machine Aziizudin, Achmad; Hidayat, Arif; Sidik Purnomo
Jurnal E-Komtek (Elektro-Komputer-Teknik) Vol 7 No 2 (2023)
Publisher : Politeknik Piksi Ganesha Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37339/e-komtek.v7i2.1518

Abstract

Industri manufaktur baja merupakan salah satu bahan utama disetiap pembuatan alat. Baja sendiri memiliki ketebalan yang berbeda-beda sesuai dengan kegunaannya, mulai dari 1 mm-20 mm. Semakin tebal baja yang digunakan, maka proses fabrikasi terutama pemotongan baja tersebut akan semakin sulit. Pada umumnya, alat yang digunakan untuk memotong baja yang tebal adalah Gas Cutting dengan jenis gas yang digunakan berupa Oksigen dan LPG (Liquified Petroleum Gas), atau bisa juga menggunakan gas Oksigen dan Acytelene, hal ini lebih efektif jika dibandingkan dengan memotong baja atau baja menggunakan gerinda potong. Tetapi operator yang mengoperasikan gas cutting ini sangat mempengaruhi kerapian hasil potongan. Dengan adanya masalah tersebut, penelitian ini bertujuan untuk menganalisis hasil potongan baja atau baja menggunakan gas cutting Oxy-LPG semiotomatis, dan kemudian hasil penelitian ini dibandingkan dengan hasil potongan baja atau baja menggunakan gas cutting Oxy-LPG konvensional.

Page 18 of 28 | Total Record : 276

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