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All Journal IJCCS (Indonesian Journal of Computing and Cybernetics Systems) Tekno : Jurnal Teknologi Elektro dan Kejuruan ILMU KELAUTAN: Indonesian Journal of Marine Sciences Jurnal Teknologi Elektro PROtek : Jurnal Ilmiah Teknik Elektro Journal of Applied Geospatial Information Techne : Jurnal Ilmiah Elektroteknika Jurnal Sustainable: Jurnal Hasil Penelitian dan Industri Terapan JAST : Jurnal Aplikasi Sains dan Teknologi Jurnal Segara Logista: Jurnal Ilmiah Pengabdian Kepada Masyarakat TELKA - Telekomunikasi, Elektronika, Komputasi dan Kontrol Journal of Applied Electrical Engineering Electron: Jurnal Ilmiah Teknik Elektro Jurnal Pengabdian Masyarakat Nusantara
Tonny Suhendra
Universitas Maritim Raja Ali Haji
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Physics Other

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IoT Sea Level Monitoring: A Study on the Development and Field Testing Hollanda Arief Kusuma; Muhammad Aris Akbar; Tonny Suhendra
Jurnal Segara Vol 19, No 1 (2024): April
Publisher : Politeknik Kelautan dan Perikanan Dumai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/segara.v19i1.12352

Abstract

The measurement of sea level is important in oceanography, as it provides critical information about the ocean environment, including tides, currents, and water temperature. This study aimed to develop an IoT-based sea level monitoring device that can accurately measure sea level and transmit the data in real time. The device consisted of various components: an ESP32 Microcontroller, a GSM Module, an MS5803-14BA sensor, and a battery. The components were assembled on a PCB board and placed inside a waterproof box to protect the electronics from the ocean environment. The field test was conducted for 17 hours at the Tanjungpinang Class 1 Navigation Office Port, and the data was monitored through the Ubidots platform. The results showed that the device accurately measured sea level, with an RMSE value of 0.69 cm and an accuracy rate of 99.47%. However, the field test also revealed data transmission issues, with 18.81% of the data not being sent to the server. This low data transmission rate may have been due to low RSSI levels and issues with operator signal quality. Further research is needed to understand the reasons behind these data losses and to improve the device's overall performance. This study demonstrated the feasibility of using an IoT-based sea level monitoring device to accurately measure sea level and transmit the data in real time. It provides valuable information for further development and improvement of sea level monitoring systems.
Buoy Observasi Data Parameter Oseanografi Dan Meteorologi di Perairan Terumbu Karang : Desain dan Implementasi Kusuma, Hollanda Arief; Alfahmi, Muhammad Hafiz; Suhendra, Tonny; Setyono, Dwi Eny Djoko
Techné : Jurnal Ilmiah Elektroteknika Vol. 22 No. 2 (2023)
Publisher : Fakultas Teknik Elektronika dan Komputer Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31358/techne.v22i2.363

Abstract

Dalam studi ini, pengembangan buoy observasi data oseanografi dan meteorologi dilakukan dengan menggunakan wahana bouy yang stabil dan mengambil data dengan akurasi yang baik. Sensor DS18B20 memiliki akurasi 98,82% dengan RMSE 0,54°C, sensor DHT21 memiliki akurasi 99,99% dengan RMSE 0,0013°C, dan sensor kekeruhan memiliki akurasi antara 95,92% hingga 96,76% dengan RMSE 8,7 NTU hingga 46 NTU. Konsumsi daya perangkat 1 jam sebesar 1,85 Wh. Hasil uji lapang menunjukkan variasi pola suhu udara dan permukaan air laut, tingkat kelembaban udara yang lebih tinggi pada malam hari, dan intensitas cahaya matahari yang menurun pada malam hari dengan kenaikan akibat cahaya bulan. Kekeruhan air masih sesuai baku mutu. Baterai 25,2 Wh dan solar panel 4,2 Wp digunakan sebagai pasokan daya.
Development Arduino Data Logger using TDR H3CR for Tidal Simulator Kusuma, Hollanda Arief; Putra, Riandra; Suhendra, Tonny
Jurnal Teknologi Elektro Vol 15, No 1 (2024)
Publisher : Electrical Engineering, Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jte.2024.v15i1.010

Abstract

Tides are the rise and fall of sea level repeatedly over a certain period of time. Tides have an important role in life, such as in the aspects of tourism, fisheries, economy, shipping, and student research. Learning media innovation develops until it looks real, which is called a simulation or simulator application. Simulator media as learning has many benefits, such as shortening research time and reducing research funds. Raja Ali Haji Maritime University has a tidal simulation model that has been equipped with a floodgate, and the weakness of the simulator is that it still uses a manual system. Researchers developed a new tidal simulation tool without a generator and only analyzed the up and down data that had been set using H3CR, DC Water Pump, and DC Selenoid Valve as a tool for automatic tidal circulation commands.
Kalibrasi Sensor Tekanan MS5803-14BA Sebagai Pengukur Tinggi Muka Air Laut Kusuma, Hollanda Arief; Akbar, M Aris; Suhendra, Tonny
TEKNO: Jurnal Teknologi Elektro dan Kejuruan Vol 33, No 2 (2023)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um034v33i2p19-27

Abstract

Informasi kedalaman air laut berguna untuk aktivitas masyarakat pesisir, industri pariwisata, navigasi pelayaran, pemanfaatan sumber daya alam, dan sistem peringatan dini dan simulasi dampak dari bencana alam. MS5803-14BA merupakan sensor tekanan air yang banyak digunakan untuk mengukur kedalaman air. Penggunaan metode sensor tekanan untuk mengukur kedalaman air selain perlu dilakukan proses konversi ke kedalaman juga harus dilakukan proses kalibrasi. Oleh sebab itu, pada penelitian ini melakukan proses kalibrasi agar pengukuran kedalaman air mendapatkan nilai yang tidak jauh berbeda dari pengukuran yang sebenarnya. Penelitian ini menggunakan komponen utama yaitu sensor tekanan air MS5803-14BA, mikrokontroler ESP32, modul RTC DS3231, Micro SD Card Shield. Dari Hasil pengujian kalibrasi sensor tekanan MS5803-14BA didapatkan rata-rata akurasi sensor tekanan MS5803-14BA sebesar 99,75% dengan persentase error sebesar 0,25% dan RMSE sebesar 7,55% dari 1.410 data kalibrasi yang didapatkan. Dari nilai data-data ini menandakan bahwa sensor tekanan MS5803-14BA cukup akurat dan mampu untuk mengukur tinggi muka air.
Pengenalan Energi Baru Terbarukan pada SD Negeri 010 Bukit Bestari, Tanjungpinang Prov. Kepulauan Riau Suhendra, Tonny; Mujahidin, Muhamad; Rusfa, Rusfa; Nusyirwan, Deny; Syafiq, Ahmad
JAST : Jurnal Aplikasi Sains dan Teknologi Vol 8, No 2 (2024): EDISI DESEMBER 2024
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/jast.v8i2.6071

Abstract

As fossil fuels dwindle, new and renewable energy sources play an essential role in the future. Modern society uses electricity in almost all aspects of life. So do schools. In schools with good access to electricity, modern electronic technology and media such as projectors, computers, internet, audio and video, equipment, and practical objects operated using electricity can be used for educational purposes. Ultimately, schools can improve the results of the learning process. With this background, Community Service was carried out regarding introducing new renewable energy at SDN 010 Bukit Bestari. The service received a positive response and increased knowledge and desire to utilize renewable energy in schools. The sustainability of the service activity is the implementation of renewable energy in school facilities that use electricity.ABSTRAKSeiring dengan berkurangnya bahan bakar fosil, maka sumber energi baru dan terbarukan memainkan peranan penting di masa depan. Masyarakat modern memanfaatkan listrik di hampir semua aspek kehidupan. Demikian juga sekolah. Sekolah yang memiliki akses listrik baik, pemanfaatan teknologi dan media elektronik modern di sekolah seperti proyektor, komputer, internet, audio dan video, peralatan dan benda praktek yang dioperasikan menggunakan listrik dapat dipergunakan untuk tujuan pendidikan. Pada akhirnya Sekolah mendapatkan potensi menigkatkan hasil proses pembelajaran. Dengan latar belakang tersebut dilaksanakan Pengabdian kepada Masyarakat mengenai pengenalan energi baru terbarukan pada SD negeri 010 Bukit Bestari. Pengabdian mendapatkan sambutan positif dan meningkatkan pengetahuan dan keinginan untuk memanfaatkan energi terbarukan di sekolah. Adapun keberlanjutan dari kegiatan pengabdian adalah implementasi energi terbarukan pada fasilitas sekolah yang mempergunakan tenaga listrik.
Comparation Tidal Harmonic Based on IoT Instrument Using Admiralty Method in Tanjungpinang Waters Alajuri, M Hasbi Sidqi; Kusuma, Hollanda Arief; Suhendra, Tonny; Setyono, Dwi Eny Djoko
Journal of Applied Geospatial Information Vol. 8 No. 2 (2024): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v8i2.9042

Abstract

Tides are the rising and falling movement of sea level caused by the gravitational force of celestial bodies such as the moon and sun on the mass of seawater on earth. The aim of this research is to compare the use of time series of harmonic constant parameters obtained from tidal data stored in the tool using the admiralty method. Research activities were carried out at the international port of Dompak Island, Tanjungpinang City, Riau Islands. This tidal data is analyzed by admiralty. This method is used to analyze harmonic constants and identify patterns and sea level levels. Based on the results obtained, the type of tide in Tanjungpinang waters is a mixed tide (single dominant) with an F value of 2.01 to 2.07. The sea level elevation values "‹"‹obtained (MSL) from each time series ranged from 75.83 cm to 76.60 cm, (MHWL) ranged from 97.17 cm to 98.24 cm. Then (MLWL) ranges from 58.77 cm to 59.39 cm. Meanwhile, (HHWL) ranges from 153.98 cm to 154.73 cm, and (LLWL) ranges from -2.77 cm to -1.96 cm. With a confidence interval of 5 percent, is obtained. The difference in each time series seen from the data (MSL) is 7cm. Therefore, Tidal data from each time series has no significant differences.
Effect of Pulse Width Modulation on Proportional, Integral, and Derivative Coefficient Characteristics Suhendra, Tonny
PROtek : Jurnal Ilmiah Teknik Elektro Vol 10, No 2 (2023): Protek : Jurnal Ilmiah Teknik Elektro
Publisher : Program Studi Teknik Elektro Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/protk.v10i2.5033

Abstract

Based on the value of feedback obtained from the sensor (LDR), the PID algorithm uses the error value obtained from the comparison between the sensor value and the setpoint value to perform calculations so that the PWM generator will use the output value to produce a row of pulses that will be converted to a voltage (signal) with a range of  0 to 255 (0 volt to 5 volt)  and is used to turn on the LED lamp according to the desired light level. The output characteristics generated by the PID control for each coefficient can be used as a benchmark to determine the correct coefficient value for Propotional coefficient, Integral coefficient and Derivative coefficient  as a whole. From the test results, it can be seen that the coefficient value adjustment can be taken based on the size of the difference or error contained in the system. If the difference in error is slight, the use of large coefficient values, especially in derivative coefficients. It helps the system achieve a stable condition and reduces overshoot. Still, if the error value is significant, then applying a considerable efficiency value will make the system achieve stable condition stable becomes a little tricky because it is possible to overshoot the PID output.
Spectral Characterization in Seaweed, Kappaphycus alvarezii, using AS7285x Spectroscopy Sensor Device Kusuma, Hollanda Arief; Suhendra, Tonny; Ilhamdy, Aidil Fadli; Ilhami, Carel Candigia Sahid; Setyono, Dwi Eny Djoko; Lubis, Muhammad Zainuddin
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 2 (2025): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.30.2.183-191

Abstract

This study explores the spectral characterization of seaweed, Kappaphycus alvarezii, using the SparkFun Triad Spectroscopy Sensor AS7265x to assess the relationship between water content and light intensity. This research aims to provide a foundation for non-destructive monitoring of post-harvest seaweed quality using spectral techniques. The SeaSpec device was constructed using an ESP32 microcontroller, a TFT display, and the AS7265x sensor. Seaweed samples were collected from the coastal area of Karimun Islands and subjected to a controlled drying process at 40°C to determine the water content in the seaweed. The spectral data were recorded across 18 channels in the visible and infrared spectra, highlighting distinct patterns that correlate with varying moisture levels. A multiple linear regression analysis was employed to determine the contributions of individual spectral channels to water content prediction, revealing that each channel has its own unique contribution to the model. Coefficient of determination (R²), percentage error (%), and percentage accuracy (%) were also used to assess model performance. The results indicated that higher water content corresponds to increased light intensity. The analysis indicated that the visible spectrum outperformed the infrared spectrum in predictive accuracy, with an R² value of 0.79 compared to 0.61 for the infrared spectrum. This indicates that the visible light spectrum is more effective in predicting water content in K. alvarezii. The findings underscore the potential of spectral analysis as a reliable method for assessing the physico-chemical properties of seaweeds, advancing the use of optical sensors in aquaculture and environmental monitoring while paving the way for future research.
Testing the Range and Analysis of WSN LoRa Sx1278 Parameters in Coastal Areas Kusuma, Hollanda Arief; Hanafi, M Fadzil; Suhendra, Tonny; Oktaviani, Nadya
TELKA - Telekomunikasi Elektronika Komputasi dan Kontrol Vol 10, No 2 (2024): TELKA
Publisher : Jurusan Teknik Elektro UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/telka.v10n2.168-177

Abstract

This research discusses the testing of the range and analysis of other parameters of Wireless Sensor Network (WSN) technology using LoRa technology at 433 MHz frequency in coastal areas. This study aims to provide important information for the development of WSN and LoRa technology, especially in coastal areas. The research method used is the design of the device, the creation of transmitter and receiver firmware, and field testing using the continuous method in Teluk Sebong, Berakit on May 26, 2022. The results showed that the maximum range achieved by the receiver was 7.3 km with a packet loss of 56.84%. Data transmission using LoRa experienced a significant delay, especially at a range of 4.2 km with a delay time of up to 18 seconds. In addition, the study also analyzed the LoRa network performance, such as the map of measurement and data loss points, the distribution of RSSI values, and the distribution of SNR values divided into several distance ranges. This research is expected to provide important information for the development of WSN and LoRa technology, especially in coastal areas
IMPLEMENTASI SISTEM KEAMANAN LOKER BERBASIS WIRELESS SENSOR NETWORK DI PERPUSTAKAAN PUSAT UMRAH: Implementasi Sistem Keamanan Loker Berbasis Wireless Sensor Network di Perpustakaan Pusat UMRAH Putra, Riski; Uperiati, Alena; Suhendra, Tonny; Purnamasari, Dwi Amelia
Sustainable Vol 12 No 1 (2023): Jurnal Sustainable : Jurnal Hasil Penelitian dan Industri Terapan
Publisher : Fakultas Teknik Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/sustainable.v12i1.4751

Abstract

Perkembangan teknologi dan sistem automasi berkembang semakin pesat. Kemajuan teknologi turut membantu dalam pengembangan sistem keamanaan menjadi lebih baik. Pada awalnya sistem keamanaan pada loker dilakukan secara manual dan kurang praktis dibandingkan dengan sistem teknologi saat ini. Hal ini membuat peneliti melakukan inovasi membangun sistem keamanan loker pada perpustakaan menggunakan RFID berbasis Wireless Sensor Network, dan tidak lagi menggunakan kunci konvensional sebagai akses membuka loker. Harapannya keberadaan suatu barang yang berada di loker dapat dilakukan monitoring dalam layar atau informasi node, baik dalam tampilan layar dan penyimpanan database sehingga memastikan kondisi loker tetap aman. Berdasarkan hasil penelitian yang dilakukan dapat disimpulkan bahwa sistem keamanan loker Menggunakan metode prototype berhasil diimplementasikan dalam membangun sistem keamanan loker menggunakan RFID berbasis Wireless Sensor Network yaitu, sistem keamanan loker berbasis RFID RC522 telah berhasil dibuat dan dapat bekerja dengan baik sesuai rancangannya. Sistem keamanan loker berbasis RFID ini menggantikan kunci konvensional menjadi card RFID yang dapat membuka loker dan sistem keamanan loker juga dapat dimonitoring melalui web dan perangkat ini tersambung dengan jaringan Wi-Fi.
Co-Authors Achmad Zuchriadi Afdal Hadi Ahmad Syafiq Ahmad Syafiq Akbar, M Aris Alajuri, M Hasbi Sidqi Alena Uperiati Alfahmi, Muhammad Hafiz Allsay Kitsash Addifisyukha Cintra Allysia Shafira Anton Hekso Yunianto Desi Oktavia Dhanushka Devendra Dwi Eny Djoko Setyono Dwi Eny Djoko Setyono, Dwi Eny Djoko Hanafi, M Fadzil Hekso Yunianto, Anton Henry Ali Singer Hollanda Arief Kusuma Hollanda Kusuma Ilhami, Carel Candigia Sahid Lilis Agustina Sinaga Lucky Pradana Muhammad Aris Akbar Muhammad Zainuddin Lubis Mujahidin1, Muhamad Nadya Oktaviani, Nadya Prayetno, Eko Purnamasari, Dwi Amalia Purnamasari, Dwi Amelia Putra, Riandra Putra, Riski Rian Anjasmara Rusfa Rusfa, Rusfa Sapta Nugraha Saputra, Irwan Septia Refly Siallagan, Wendi Soleh Vudin Gozali Tri Kuntoro Priyambodo Uperiati, Alena Yuliani Yuliani Yunianto, Anton Hexso