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All Journal E-Dimas: Jurnal Pengabdian kepada Masyarakat Jurnal Penelitian Pendidikan IPA (JPPIPA) Jambura Physics Journal Jurnal Sibermas (Sinergi Pemberdayaan Masyarakat) Dewantara Journal of Technology Jurnal Ilmiah Wahana Pendidikan KUANTUM: Jurnal Pembelajaran dan Sains Fisika BIOCHEPHY: Journal of Science Education Jurnal Edu Research Jurnal Riset Fisika Indonesia Jurnal Pendidikan dan Pengabdian Masyarakat Jurnal Pengabdian Masyarakat Bangsa Jurnal Natural Scientiae JGEN : Jurnal Pengabdian Kepada Masyarakat KUANTUM Anatesa : Kajian Pendidikan, Sosial dan Keagamaan JPFT (Jurnal Pendidikan Fisika Tadulako Online) Jurnal Riset dan Pengabdian Interdisipliner BULETIN FISIKA
Meilan Demulawa
Universitas Negeri Gorontalo
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Journal : Dewantara Journal of Technology

 1 
Determination of Suitability Test on Digital Mammography Using Voltage Accuracy Parameter Fitriani Fitriani; Muhammad Yunus; Muh Fachrul Latief; A Indra Wulan Sari Ramadani; Meilan Demulawa; Haris Munandar; Muh. Nur Akbar
Dewantara Journal of Technology Vol. 2 No. 1 (2021): Dewantara Journal of Technology Volume 2 No 1
Publisher : Akademi Teknologi Industri Dewantara Palopo

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Abstract

Determination of suitability test on digital mammography have been conducted from 2016-2018 at a hospital in Makassar City using voltage accuracy parameter. This measurement was used detector, and X-ray multimeter. Statistically, voltage accuracy parameter has correlation value, r = 0.866 (perfect correlation). While the p value obtained in voltage accuracy parameter is p < 0.05. There are significant differences in value from 2016-2018. The result of the suitability test for voltage accuracy parameter is still within the tolerance limit as recommended by the IAEA.
Real-Time and Accurate pH Sensor Based on Internet of Things (IoT) Ikano, Robin; Setiawan, Dewa Gede Eka; Yunus, Muhammad; Demulawa, Meilan; Rahman, Irsan
Dewantara Journal of Technology Vol. 5 No. 2 (2025): Dewantara Journal of Technology Volume 5 Nomor 2
Publisher : Akademi Teknologi Industri Dewantara Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59563/djtech.v5i2.312

Abstract

One important parameter that needs to be considered in water quality is the acidity level (pH) in the water. This study aims to design and determine real-time and accurate pH sensor based on internet of thing (IoT). This system design uses an ESP32 microcontroller and The PH-4502C pH Meter Module sensor. The ESP32 can be connected to the IoT-based Blynk platform, allowing pH data to be monitored in real time via a smartphone. Testing of the IoT-based pH sensor was conducted to evaluate the system's real-time operation under varying distances. Meanwhile, the pH sensor's accuracy was determined by comparing its output with a digital pH meter using buffer solutions at different pH levels. The test results show that the time value required in each range is always constant, namely 1 s. This proves that IoT-based monitoring does not affect the range. Meanwhile, measurement of pH level was the average error value is 3.49%, and the sensor accuracy is 96.51%. These results indicate a low error rate, resulting in high accuracy. The sensor error value of 3.49% is lower than the specified error tolerance limit of <5%. This proves that the pH sensor, with an accuracy of 96.51%, is suitable and reliable for measuring pH in solutions.
Co-Authors AA Sudharmawan, AA Abdi Gunawan Djafar Abdjul, Tirtawati Andi Indra Wulan Sari Ramadani Anisa Handani Uno Asri Arbie Azmi Asra Buhungo, Trisnawaty Junus Citron S Payu Desy Nuraini Lakutu Dewa Gede Eka Setiawan febriyanti febriyanti Fitriani Fitriani Furqon Sanjaya Gafur, Nurfitri Abdul Gani, Sintia N. Gerald Tamuntuan Goma, Metalika Hamid Syahropi Haris Munandar Harsano Jayadi Hartono D. Mamu Herinda Mardin Ika Daruwati Ika Daruwati Ika Daruwati, Ika Ikano, Robin Indriati Martha Patuti Irsan Irsan Irsan Rahman, Irsan Isa, Putri Cahyani Jahja, Mohamad Kalbi, Kalbi Kurniasari, Septiana La Nane Mauli, Eka Nurdiana U Meidji, Icha Untari Mohamad, Humaira Muh Fachrul Latief Muh. Nur Akbar Muhammad Yunus Muhammad Yunus Mursalin . Napu, Asriyani Nono’o, Sandra Nurhikmah Sasna Junaidi Sasna Junaidi, Nurhikmah Sasna Junaidi Sasna Nurul Maulida Alwi R. Akuba, Kisman Rahim, Niarti Ramadani, A. Indra Wulan Sari Rifai, Rusni R Rindi Genesa Hatika Salmawaty Tansa Sitti Resti Despianti Sohibun -, Sohibun Supartin Supartin Supartin Supartin, Supartin Supu Idawati Supu, Idawati Supu, Idawaty Suwaldi Mopangga T. Paputungan, Devi Usman, Yusuf Virna, Rila Waode Eti Hardianti Wiwin Kobi