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All Journal International Journal of Electrical and Computer Engineering International Journal of Reconfigurable and Embedded Systems (IJRES) International Journal of Informatics and Communication Technology (IJ-ICT) International Journal of Advances in Applied Sciences ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Journal of Robotics and Control (JRC) Journal of Innovation Information Technology and Application (JINITA) Jurnal Listrik, Instrumentasi, dan Elektronika Terapan Journal of Software Engineering, Information and Communication Technology

WIDIANTO, MOCHAMMAD HALDI

Unknown Affiliation

Author-ID : 1183445

Aerospace Engineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics

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Pengamanan Pesan pada Steganografi Citra dengan Teknik Penyisipan Spread Spectrum SAIDAH, SOFIA; IBRAHIM, NUR; WIDIANTO, MOCHAMMAD HALDI
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 7, No 3 (2019): ELKOMIKA
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v7i3.544

ABSTRAKPada studi ini, dilakukan penggabungan metode - metode untuk memperkuat dan meningkatkan sisi keamanan proses pertukaran informasi atau pesan digital. Metode yang digunakan diantaranya adalah metode kriptografi dan metode steganografi. Implementasi pada sistem yang dibangun dilakukan dengan menyandikan pesan pada penerapan metode steganografi citra dalam menyembunyikan pesan tersandi yang dihasilkan ke dalam sebuah citra warna (RGB) dalam domain Discrete Cosine Transform dengan teknik penyisipan Spread Spectrum. Hasil penelitian menunjukan bahwa kualitas dari stego image sangat mirip dengan cover citra yang digunakan, berdasarkan perolehan nilai performansi objektif PSNR diatas 30 db dan subjektif MOS di atas nilai 4.Kata kunci: Steganografi, Discrete Cosine Transform, Spread Spectrum, PSNR, SNR ABSTRACTIn this study, a combination of methods was used to strengthen and enhance the security side of the process of exchanging information or digital messages. The methods used include cryptographic methods and steganography methods. The implementation of the system built is done by encoding the message on the application of the image steganography method in hiding the encrypted message generated into a color image (RGB) in the Discrete Cosine Transform domain with the Spread Spectrum insertion technique. The results of the study show that the quality of the stego image is very similar to the cover image used, based on the acquisition of an objective performance value of PSNR above 30 db and subjective MOS above a value of 4.Keywords: Steganografi, Discrete Cosine Transform, Spread Spectrum, PSNR, SNR

Novel asymmetric space vector pulse width modulation for dead-time processing in three-phase power converters Indriarto Yuniantoro; Mochammad Haldi Widianto
International Journal of Electrical and Computer Engineering (IJECE) Vol 12, No 3: June 2022
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijece.v12i3.pp2346-2352

This research analyzes the asymmetric control strategies in multilevel inverters, including asymmetric techniques in space vector modulation of power converters. Modulation parameters such as reference voltage vector (Vref), switching time, and duty cycle are derived in the three-dimensional spatial vector geometry formulation. Asymmetric space vector pulse width modulation (SVPWM) is unique in specifying modulation parameters, has unequal tetrahedron patterns, accompanied by application examples for the upper and lower sector pairs of a tetrahedron. The combination of the switch in the form of an inclined cylinder produces twelve pairs of asymmetric tetrahedrons where the voltage vector positions are in the other twenty-four tetrahedrons. The calculation shows processing dead-time in switching, which is used for current compensation in three-phase power converters.

Energy saving on IoT using LoRa: a systematic literature review Mochammad Haldi Widianto; Arief Ramadhan; Agung Trisetyarso; Edi Abdurachman
International Journal of Reconfigurable and Embedded Systems (IJRES) Vol 11, No 1: March 2022
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijres.v11.i1.pp25-33

The development of devices connected to the internet is very significant, encouraging the creation of the internet of things (IoT). With remote systems, IoT is not enough to use in case of internet instability. By using long range (LoRa), IoT systems can now solve this problem. Millions of data make IoT-LoRa have to spend a lot of energy. This paper helps discover where recent studies offer a broad perspective on energy savings using the systematic literature review (SLR). The paper extracted 252 articles from IEEE, ACM, MDPI, Springer, Hindawi, ScienceDirect, and IAES. 44 articles passed the specified inclusion and exclusion criteria. The article focuses on knowledge about IoT-Lora, energy saving needs, energy saving factors, and the paper demographics. The author synthesizes studies for that purpose on IoT applications using LoRa.

Implementasi Raspberry Pi untuk membantu Klinik dan Pengembangan Website Klinik menggunakan Rapid Application Development Mochammad Haldi Widianto; Della Ihsanti Kusnadi
Journal of Innovation Information Technology and Application (JINITA) Vol 4, No 1 (2022): JINITA, June 2022
Publisher : Politeknik Negeri Cilacap

The development of Internet of Things (IoT) tools and components has often been used in agriculture, plantations, and smart homes. One of the microcontroller components can take advantage of the Raspberry Pi because it is similar to a small computer. Another thing that makes web-based application development can take advantage of Rapid Application Development (RAD) because it is considered very flexible and can iterate on the design and development section where that section requires special focus due to the possibility of the same error. There are several studies related to utilizing website development to help in hospitals. However, the real problem is that technology such as clinical information websites has not been widely used for small clinics. This development website is supported by the location of the clinics, which are far from the urban center. The Others is supported by research on website development in clinics, not too many. So this study has a goal, namely the development of a website application with the help of a Raspberry Pi as a computer replacement medium (having wifi and a processor) which is applied to clinical LED TV because there is no computer to display it, and making the administration of the website itself tested by testing and evaluation using Black Box and User Acceptance Test (UAT). In testing and evaluation, it was found that 5 trials of Black Box testing got good results with all categories achieved. 71.06% of UAT results are included in the "Satisfied" category on the UAT test, where the best result is "Very Satisfied". Furthermore, research has not focused on the actual application of IoT and needs to be studied more deeply in making IoT integrated with the website.

A Systematic Review of Current Trends in Artificial Intelligence for Smart Farming to Enhance Crop Yield Mochammad Haldi Widianto; Mochamad Iqbal Ardimansyah; Husni Iskandar Pohan; Davy Ronald Hermanus
Journal of Robotics and Control (JRC) Vol 3, No 3 (2022): May
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jrc.v3i3.13760

Current technology has been widely applied for development, one of which has an Artificial Intelligence (AI) applied to Smart Farming. AI can give special capabilities to be programmed as needed. In cooperation with agricultural systems, AI is part of improving the quality of agriculture. This technology is no stranger to being applied in basic fields such as agriculture. This smart technology is needed to increase crop yields for various regions by utilizing the current trends paper. This is necessary because less land is available for agriculture, and there is a greater need for food sources. Therefore, this systematic review aims to collect the current trends in AI studies for Smart Farming papers using the latest year features from 2018-2022. This paper is handy for researchers and industry in looking for the latest papers on research to enhance crop yields. The authors utilized Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) of 534 articles from IEEE, ACM, MDPI, IAES, and ScienceDirect. After going through a careful process, 67 papers were found that were judged according to the criteria. After the authors got some of the current trends, the author has discussed several factors regarding the results obtained to enhance crop yields, such as Weather, Soil, Irrigation, Unmanned Aerial Vehicle (UAV), Pest Control, Weed Control, and Disease Control.

Systematic Literature Review: LoRa and LoraWAN projects in practice Mochammad Haldi Widianto
Journal of Software Engineering, Information and Communication Technology (SEICT) Vol 3, No 1: June 2022
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/seict.v3i1.47780

The first technology to communicate with the Wireless Sensor Network (WSN), but this technology can only perform close-range sensing and processing, in contrast to the Internet of Things (IoT) which can communicate long distances based on the Internet, while the commonly introduced assistive technology is Low-Power-Wide-Area-Network (LPWAN) which is a low power consumption technology but long range. One technology that is widely used is LoRa and its open access utilises LoRaWAN, because it has many advantages. There has been a lot of research on LoRa, LoRaWAN and surveys or reviews, but not many have focused on reviews for application rather than just testing. In this research, the author wants to conduct a review of the application of LoRa and LoRaWAN by utilising Systematic Literature Review (SLR), with the initial phase search getting 1314 and the final result is getting 45 studies taken from IEEE Explorer, ACM and Indonesian language papers (Google Scholar). Then the researcher presents a discussion related to the application of LoRa and LoRaWAN in several fields such as health, agriculture, etc.

A Systematic Review of LPWAN and Short-Range Network using AI to Enhance Internet of Things Mochammad Haldi Widianto; Ardiles Sinaga; Maria Artanta Ginting
Journal of Robotics and Control (JRC) Vol 3, No 4 (2022): July
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jrc.v3i4.15419

Artificial intelligence (AI) has recently been used frequently, especially concerning the Internet of Things (IoT). However, IoT devices cannot work alone, assisted by Low Power Wide Area Network (LPWAN) for long-distance communication and Short-Range Network for a short distance. However, few reviews about AI can help LPWAN and Short-Range Network. Therefore, the author took the opportunity to do this review. This study aims to review LPWAN and Short-Range Networks AI papers in systematically enhancing IoT performance. Reviews are also used to systematically maximize LPWAN systems and Short-Range networks to enhance IoT quality and discuss results that can be applied to a specific scope. The author utilizes selected reporting items for systematic review and meta-analysis (PRISMA). The authors conducted a systematic review of all study results in support of the authors' objectives. Also, the authors identify development and related study opportunities. The author found 79 suitable papers in this systematic review, so a discussion of the presented papers was carried out. Several technologies are widely used, such as LPWAN in general, with several papers originating from China. Many reports from conferences last year and papers related to this matter were from 2020-2021. The study is expected to inspire experimental studies in finding relevant scientific papers and become another review.

Implementasi Raspberry Pi untuk membantu Klinik dan Pengembangan Website Klinik menggunakan Rapid Application Development Mochammad Haldi Widianto; Della Ihsanti Kusnadi
Journal of Innovation Information Technology and Application (JINITA) Vol 4 No 1 (2022): JINITA, June 2022
Publisher : Politeknik Negeri Cilacap

One of the Internet of Things (IoT) components is a microcontroller. One of the many microcontrollers is the Raspberry Pi. This component is often used because it is similar to a small computer. Many people use Rapid Application Development (RAD) in making web-based applications because it is considered very flexible and can iterate on the design and development section. There are several studies related to utilizing website development to help hospitals. However, the real problem is that the use of technology such as clinical information websites has not been widely used for small clinics. This is hampered by the location of the clinics, which are far from the urban center. This study has a goal to develop a website application with the help of a Raspberry Pi. This component works as a computer replacement medium (having wifi and a processor) applied to clinical LED TV because there is no computer to display it, and making the administration of the website itself tested by testing and evaluation using Black Box and User Acceptance Test (UAT). In testing and evaluation, it was found that 5 trials of Black Box testing got good results with all categories achieved. 76.13% of UAT results are included in the "Satisfied" category on the UAT test where the best result is "Very Satisfied". Furthermore, research has not focused on the actual application of IoT and needs to be studied more deeply in making IoT integrated with the website

Purwarupa Perangkat Pelindung Jemuran pada Rumah Pintar Berbasis IoT Memanfaatkan MQTT dan Fog Computing Mochammad Haldi Widianto; Matthew Christopher Albert; Herlangga Karteja
Jurnal Listrik, Instrumentasi, dan Elektronika Terapan Vol 3, No 1 (2022)
Publisher : Departemen Teknik Elektro dan Informatika Sekolah Vokasi UGM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/juliet.v3i1.74004

Abstract – The industrial revolution has changed the world a lot, one of which is the internet of things (IoT) role. This technology needs the role of protocols for communication and etc. Most studies use message queue telemetry transport (MQTT) because it is lightweight and easy to apply. MQTT has been widely used in smart homes, farms, and smart cities. But in practice, MQTT also requires the internet to work. One suggestion that can be used with fog computing is when there is a sensor error, or the internet is unstable. Many studies on IoT use MQTT as a protocol, but its use is still rarely combined with fog computing. This study aims to make a prototype of a clothesline protection device using the MQTT and fog computing protocols. The test results using BlackBox show that all devices have worked well. The MQTT communication protocol is very light for communication and then assisted by fog computing which can perform remotely correctly when a sensor error occurs. Fog computing can also help when the internet connection is not good. The weakness of this research is a delay in the movement of the DC motor. This happens because of low-cost devices and interference from signals or objects around it. Another weakness is that there is no validation of environmental results such as humidity and temperature.Keywords: fog computing, internet of things (IoT), message queue telemetry transport (MQTT)Intisari – Revolusi industri telah banyak mengubah dunia, salah satunya peran dari internet of things (IoT). Teknologi ini perlu peran serta protokol untuk komunikasi dll. Kebanyakan penelitian menggunakan message queue telemetry transport (MQTT) karena sifatnya yang ringan dan mudah diaplikasikan. Pemanfaatan MQTT sudah banyak digunakan seperti pada rumah pintar, pertanian pintar dan kota pintar. Tetapi pada penerapannya MQTT juga membutuhkan internet untuk bekerja, salah satu saran yang dapat digunakan dengan fog computing ketika terdapat kesalahan pada sensor atau internet tidak stabil. Terdapat banyak penelitian mengenai IoT yang memanfaatkan MQTT sebagai protokolnya, tetapi pemanfaatannya masih jarang menggabungkan keduanya dengan fog computing. Pada penelitian ini bertujuan untuk membuat purwarupa perangkat pelindung jemuran dengan memanfaatkan protokol MQTT dan fog computing. Hasil pengujian dengan memanfaatkan BlackBox menunjukkan jika semua perangkat telah bekerja dengan baik. Pada protokol komunikasi MQTT terbukti sangat ringan untuk komunikasi lalu dibantu dengan fog computing yang dapat melakukan remote dengan tepat ketika terjadi kesalahan pada sensor. Fog computing pun dapat membantu ketika koneksi internet yang kurang baik. Kelemahan penelitian ini adalah terjadi delay pada pergerakan motor DC, hal ini terjadi karena penggunaan perangkat berbiaya rendah, dan terjadi interferensi dari sinyal atau benda di sekitarnya. Kelemahan lainnya adalah belum adanya validasi hasil lingkungan seperti kelembaban dan suhu.Kata kunci: fog computing, internet of things (IoT), message queue telemetry transport (MQTT)

Development of IoTs-based instrument monitoring application for smart farming using solar panels as energy source Yovanka Davincy Setiawan; Bryan Ghilchrist; Gerry Giovan; Mochammad Haldi Widianto
International Journal of Reconfigurable and Embedded Systems (IJRES) Vol 12, No 2: July 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijres.v12.i2.pp248-259

Indonesia is currently carrying out an industrial revolution 4.0. This revolution discusses the application of technology in the industrial sector, one of which is the agricultural sector. In addition to discussing the application of technology, this revolution also supports the use of renewable energy sources and one of them is the application of solar energy. The application of technology in the agricultural sector is expected to help farmers in maintaining crops to reduce the possibility of crop failure. The existence of this statement makes researchers conduct research in the design and construction of systems with internet of things (IoT) technology and utilize solar energy sources as energy sources for the system. The IoT system will utilize the ATmega328P+ESP8266 RobotDyn microcontroller by utilizing the DHT22, MD0127, soil moisture sensor, and BH1750FVI sensors and sending data to Thingspeak by utilizing the internet network with HTTP communication protocols. The system can monitor ecological factors in gardens with a fairly good degree of accuracy and the utilization of solar energy can run the system properly.

Co-Authors Agung Trisetyarso Arief Ramadhan Bryan Ghilchrist Davy Ronald Hermanus Della Ihsanti Kusnadi Della Ihsanti Kusnadi Don Bosco Julienne, Nicolas Edi Abdurachman Gerry Giovan Ghilchrist, Bryan Giovan, Gerry Herlangga Karteja Husni Iskandar Pohan Indriarto Yuniantoro Juarto, Budi Maria Artanta Ginting Matthew Christopher Albert Mochamad Iqbal Ardimansyah Nathanael Juwono, Jeremy Nur Ibrahim Puji Prabowo Samuel Yogatama, Anthonie Setiawan, Yovanka Davincy Sinaga, Ardiles SOFIA SAIDAH Yovanka Davincy Setiawan

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