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All Journal Jurnal Fisika Unand SEMIRATA 2015 Spektra: Jurnal Fisika dan Aplikasinya Communications in Science and Technology Jurdimas (Jurnal Pengabdian Kepada Masyarakat) Royal Buletin Ilmiah Nagari Membangun Jurnal Ilmu Fisika Indonesian Journal of Electrical Engineering and Computer Science BERNAS: Jurnal Pengabdian Kepada Masyarakat Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks Indonesian Community Journal Makara Journal of Technology Indonesian Journal of Community Empowerment and Service
Meqorry Yusfi
Departemen Fisika, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Andalas
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Veterinary Other

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Education of Disaster Awareness through Disaster Readiness Socialization as an Effort to Increase Community Knowledge around the Nobita Hill Tourism Area on Disaster Mitigation Marzuki Marzuki; Mutya Vonnisa; Harmadi Harmadi; Dwi Pujiastuti; Arif Budiman; Dwi Puryanti; Sri Oktamuliani; Imam Taufiq; Meqorry Yusfi; Rahmat Rasyid; Astuti Astuti; Sri Handani; Sri Rahayu Alfitri Usna; Dian Fitriyani; Elvaswer Elvaswer; Muhammad Arif; Muhammad Kahfi; Naela Amalia Zulfa; Iqbal Ramadhan; Nurul Hasanah; Feriska Handayani Irka
Warta Pengabdian Andalas Vol 31 No 2 (2024)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jwa.31.2.353-361.2024

Abstract

Nobita Hill, a tourist site in Padang City, is undergoing development as a tourist destination that offers a bird's-eye view of Padang City. Unfortunately, the hilly topography with steep slopes increases the risk of landslides in this area. In order to address the problem, the community service team from the Physics Department of Andalas University has carried out a six-month community service program from July to December 2022. It focused on disaster awareness education and used a qualitative approach. This activity aims to socialize disaster mitigation efforts, especially those related to landslides and earthquakes, considering that Padang City is also prone to earthquakes. The results of this activity showed an increase in the knowledge of the local community after the socialization, but repeated activities are needed to achieve optimal results. This ongoing activity is essential to ensure continuous improvement in the community's understanding of disaster mitigation and to support efforts to make Bukit Nobita a disaster-resilient area. Thus, this activity makes a positive contribution to shaping a safe, sustainable, and disaster-resilient tourism environment.
Sistem Monitoring Kualitas Udara Jarak Jauh Berbasis Sensor MQ-2, MQ-6 dan Sensor DHT11 Iqbal, Muhammad; Puspita, Nabilla Putri; Rasyid, Rahmad; Yusfi, Meqorry
Jurnal Fisika Unand Vol 14 No 2 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.14.2.137-144.2025

Abstract

Air quality is influenced by activities that produce gas from natural and human sources, so monitoring gas levels is important to prevent health threats. The goal is to create a natural gas monitoring tool that is efficient (easy to use) and can be accessed from a smartphone. The tool designed uses MQ-2 and MQ-6 sensors for detecting gas levels and DHT11 sensors for temperature and humidity. Data is sent in real-time on the smartphone via the Blynk application with the nRF24L01+ module. The results showed that the system worked well in monitoring butane, methane, temperature, and humidity. The highest error value on the MQ-2 sensor is 24.375%. Methane gas measurements using the MQ-6 sensor show the highest error value of 11.06%. The nRF24L01+ module successfully sends data to the receiver and activates the Light Emitting Diode (LED) and buzzer when the value exceeds the set limit. This module can send data up to a distance of 1000 meters without Line-of-Sight (LOS) obstructions and has a reduced distance of up to 600 meters in the presence of Non-Line-of-Sight (NLOS) obstructions. The Blynk application successfully displays data measuring gas levels, temperature and humidity.
Analisis Sensitivitas Sensor GY-ML8511 dalam Deteksi Formalin Ramadhan, M. Farhan; Yusfi, Meqorry; Harmadi, Harmadi
Jurnal Fisika Unand Vol 13 No 5 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.5.684-689.2024

Abstract

Food safety is a crucial aspect in meeting people's nutritional needs. Formalin, a dangerous preservative, is often used illegally to extend the shelf life of foodstuffs, posing serious risks to consumer health. This research develops a portable technology for rapid detection of formaldehyde in foodstuffs. The method utilizes the interaction between UV light and the concentration of formaldehyde in a sample treated with Schiff reagent, enabling the measurement of UV uptake proportional to formaldehyde concentration. The Schiff reagent reacts with formalin to produce a colored compound whose absorbance is measured to detect and quantify formalin in the sample. The designed optical system focuses on measuring the intensity of light from a UV LED source, which is then transmitted through the sample. The successfully transmitted light intensity is converted into an electrical signal by the GY-ML8511 sensor, which is then processed by the NodeMCU ESP8266 to display the concentration of formalin on the LCD screen. This research also analyzes the sensitivity and selectivity of the GY-ML8511 sensor to evaluate its performance and reliability in detecting formaldehyde, with the ultimate goal of improving food safety through innovative detection technologies, such as the use of biosensors and advanced spectroscopy. This technology contributes to existing solutions by enabling rapid and accurate detection at various stages of food production, thereby reducing the risk of contamination and improving compliance with food safety standards
Desain dan Implementasi Sistem Pendingin Berbasis Peltier TEC 12706 dengan Pemantauan Jarak Jauh Melalui Aplikasi Blynk pada Smartphone Puspita, Nabilla Putri; Yusfi, Meqorry
Jurnal Fisika Unand Vol 14 No 1 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.14.1.8-14.2025

Abstract

Cooling technology plays an important role in daily life, particularly in refrigerators used for storing fruits, vegetables, and beverages. However, conventional cooling systems still use freon, which can damage the ozone layer. This study utilizes the Peltier Effect on the Peltier TEC 12706 module as an environmentally friendly cooling component. The DHT22 sensor is used to measure temperature and humidity, while the NodeMCU ESP8266 processes sensor data displayed through the Blynk application. Three fans are installed outside the cooling chamber to prevent the Peltier module from overheating, and one fan is placed inside the chamber for air distribution. A heatsink is used to assist in heat dissipation. Testing compared the DHT22 sensor with AZ HT-02 and FY-11, producing regression values of R² = 0.9902 for temeprature and R² = 0.9798 for humidity, indicating high accuracy. Using two Peltier TEC 12706 modules and a 12 V 30 A AC-DC adapter, the temperature in the cooling chamber with dimensions (26x17x10) cm was reduced to 19.6°C, with humidity rising to 90.1% within 2 hours. These results show that the developed cooling system can function effectively.
PEMBERDAYAAN EKONOMI RAMAH LINGKUNGAN MELALUI PENGOLAHAN LIMBAH KELAPA: MENUJU NAGARI SUNUA BARAT YANG ECOGREEN Muttaqin, Afdhal; Meqorry Yusfi; Arif Budiman; Dwi Pujiastuti; Sri Handani; Dahyunir Dahlan; Imam Taufiq; M. Ali Shafii; Dwi Puryanti; Zulfi; Elvaswer; Feriska Handayani; Rico Adrial; Trengginas Eka Putra; Ahmad Fauzi Pohan; Dedi Mardiansyah; Ramacos Fardela; Alimin Mahyudin; Nini Firmawati; Astuti; Dian Fitriyani; Della Amelia; Haldis Alvaro; Fiqi Diyona; A. Fadhil Desafa; Zozy Aneloi Noli; Olly Norita Tetra
BERNAS: Jurnal Pengabdian Kepada Masyarakat Vol. 6 No. 3 (2025)
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/jb.v6i3.12869

Abstract

Nagari Sunua Barat memiliki potensi limbah sabut kelapa hasil perkebunan kelapa yang melimpah. Kegiatan pengabdian ini bertujuan untuk memberdayakan kelompok tani di Nagari Sunua Barat melalui pelatihan pengolahan limbah sabut kelapa menjadi cocopeat dan cocofiber, yang lebih memiliki nilai ekonomis dan ramah lingkungan. Kegiatan pengabdian kepada masyarakat dilakukan oleh tim dari Fakultas Matematika dan Ilmu Pengetahuan Alam, dimulai dengan tahap perencanaan yang melibatkan mitra kelompok tani untuk mengidentifikasi kebutuhan dan potensi yang ada pada mitra. Kegiatan ini diikuti oleh 47 peserta yang berasal dari kelompok tani dan masyarakat yang ada di Nagari Sunua Barat. Peserta diajarkan tentang pengelolaan sampah limbah sabut kelapa, yang dimanfaatkan menjadi cocopeat dan cocofiber. Metode yang digunakan meliputi demonstrasi, praktik langsung, dan diskusi interaktif. Hasil dari kegiatan menunjukkan antusiasme yang tinggi dari peserta. Sebagian besar mampu memahami dan mempraktikkan teknik yang diajarkan, dengan beberapa peserta mulai memproduksi cocopeat dan cocofiber untuk keperluan pribadi maupun komersial. Pelatihan ini berhasil meningkatkan kesadaran masyarakat akan pentingnya pengelolaan limbah yang berkelanjutan serta memberikan peluang ekonomi baru bagi kelompok tani. Kegiatan ini diharapkan dapat menjadi langkah awal untuk menjadikan Nagari Sunua Barat sebagai sentra pengolahan limbah sabut kelapa, sekaligus mendorong terciptanya masyarakat yang lebih peduli lingkungan dan mandiri secara ekonomi
Fabric materials classification device using YOLOv8 algorithm Alawiya, Tuti; Isdi, Muhammad Ridho; Yusfi, Meqorry; Harmadi, Harmadi
Indonesian Journal of Electrical Engineering and Computer Science Vol 38, No 3: June 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v38.i3.pp1479-1488

Abstract

The fashion industry in Indonesia significantly contributes to the country’s creative economy. However, public knowledge about various types of fabric materials is still limited, often leading to fraud. This research aims to develop a device that can classify fabric materials based on their structure using computer vision techniques. The device uses a digital microscope endoscope magnifier 1600x USB camera to capture fabric structure images and the YOLOv8 algorithm to classify 17 types of fabric materials from 1,700 raw image data. The research methodology includes collecting fabric image datasets, preprocessing data, and training the YOLOv8 model. The results show that the YOLOv8 model achieves an accuracy of 98%. The classification results are displayed on an LCD connected to NodeMCU ESP8266. System testing shows that the device effectively classifies fabric materials, sends the results to the database via API, and displays the results on the LCD. Overall, this device provides an effective solution for distinguishing types of fabrics and preventing fraud in fabric purchases.
Eco-Friendly Solar Refrigerator: Peltier Cooling, Remote Monitoring for Sustainable and Efficient Energy Consumption Putri Puspita, Nabilla; Yusfi, Meqorry; Rasyid, Rahmat
Jurnal Ilmu Fisika Vol 17 No 2 (2025): September 2025
Publisher : Jurusan Fisika FMIPA Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jif.17.2.193-200.2025

Abstract

Electricity is essential for everyday needs, including food preservation through refrigeration. However, access to electricity remains uneven in remote regions due to geographical constraints. Solar energy offers a promising alternative, especially in areas with abundant sunlight, highlighting the need for compact, portable, and eco-friendly cooling system. This study aims to design an eco-friendly cooling system using the Seebeck Effect in Peltier TEC 12706 modules powered by solar energy. The system consists of two Peltier TEC 12706 modules, a 50 Wp solar panel, and a 33 Ah accumulator, with a cooling chamber measuring 26 × 17 × 10 cm. Temperature and humidity were remotely monitored via the Blynk application. Experimental results showed the lowest temperature achieved was 15°C between 08:00 AM and 10:00 AM. In comparison, the most significant temperature drop of 11.7°C occurred between 12:00 PM and 02:00 PM, with an average light intensity of 176,846.15 Lux. Although the system demonstrated cooling performance, the minimum temperature of 15°C does not meet the standard refrigeration temperature of around 0°C. Therefore, the current system is not yet suitable for replacing conventional refrigerators, but it shows potential as an environmentally friendly alternative cooling solution with further development.
Penguatan Komunikasi dan Modal Sosial di Daerah Penyangga TNKS dengan Metode PRA di Nagari Lubuk Gadang Tenggara, Solok Selatan Lestari, Yayuk; Diego, Diego; Anindya, Annisa; Yasmin, Syaza; Elian, Novi; Yusfi, Meqorry; Emeraldi, Primas; Putra, Al Hamid; Adwina, Amelia Ramadhani; Irsyad, Rashid Muarif; Desri, Siska Laila
I-Com: Indonesian Community Journal Vol 5 No 3 (2025): I-Com: Indonesian Community Journal (September 2025)
Publisher : Fakultas Sains Dan Teknologi, Universitas Raden Rahmat Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/i-com.v5i3.8011

Abstract

Kegiatan pengabdian ini dilaksanakan di Nagari Persiapan Lubuk Gadang Tenggara, Solok Selatan, yang sebagian besar wilayahnya berada dalam kawasan Taman Nasional Kerinci Seblat (TNKS). Masyarakat menghadapi persoalan mendasar berupa ketidakjelasan status hukum kawasan, lemahnya kelembagaan lokal, terbatasnya akses terhadap hasil hutan bukan kayu, serta defisit kepercayaan terhadap otoritas konservasi. Untuk menjawab tantangan tersebut, digunakan metode Participatory Rural Appraisal (PRA) melalui pemetaan sosial, diskusi kelompok terarah, dan fasilitasi dialog multipihak. Hasil kegiatan menunjukkan bahwa forum partisipatif mampu mengidentifikasi potensi lokal, memperkuat kebutuhan pembentukan Kelompok Tani Hutan (KTH) dan Forum Nagari Konservasi (FNK), serta membuka ruang negosiasi yang lebih adil antara masyarakat dan TNKS. Temuan ini menegaskan pentingnya komunikasi deliberatif dan kemitraan konservasi yang inklusif, agar konservasi tidak hanya melindungi ekosistem tetapi juga meningkatkan kesejahteraan masyarakat.
Aplikasi Mikrokontroler AT89S52 Sebagai Pengontrol Sistem Pengusir Burung Pemakan Padi Dengan Bunyi Sirine -, Sumariadi; -, Wildian; Yusfi, Meqorry
Jurnal Fisika Unand Vol 2 No 1: Januari 2013
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.2.1.%p.2013

Abstract

Telah dilakukan perancangan dan pengaplikasian mikrokontroler AT89S52 sebagai pengontrol sistem pengusir burung pemakan padi dengan bunyi sirine. Peralatan  ini menggunakan cahaya laser dan LDR (light dependent resistor) sebagai sistem sensor untuk mendeteksi kehadiran burung dan bunyi sirine untuk mengusir burung. Pemrograman menggunakan bahasa C sebagai  perangkat lunak untuk sistem mikrokontroler AT89S52. Mikrokontroler AT89S52 digunakan untuk mengontrol sistem secara keseluruhan. Hasil penelitian menunjukkan bahwa burung dapat diusir dengan bunyi sirine yang diatur selama 30 detik dan jarak maksimum cahaya laser yang mampu ditangkap oleh sensor LDR adalah 110 meter .
RANCANG BANGUN SISTEM KENDALI TEMPERATUR DAN KELEMBABAN RELATIF PADA RUANGAN DENGAN MENGGUNAKAN MOTOR DC BERBASIS MIKROKONTROLER ATMEGA8535 Nainggolan, Herlina; Yusfi, Meqorry
Jurnal Fisika Unand Vol 2 No 3: Juli 2013
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.2.3.%p.2013

Abstract

Temperatur dan kelembaban relatif merupakan dua hal penting dalam meningkatkan efektifitas kerja dalam ruangan.  Salah satu sensor yang dapat membaca temperatur dan kelembaban relatif adalah modul sensor SHT11. Sensor SHT11 dimanfaatkan pada proses kendali yang dijalankan oleh mikrokontroler ATMega8535 dengan motor dc sebagai pengeksekusi. Sensor SHT11 membaca temperatur dan kelembaban relatif dengan faktor koreksi t = t + 1 dan rh = rh + 25 dengan respon waktu 50 ms dan error untuk temperatur 2,26% dan untuk kelembaban relatif 4,03%. Temperatur dan kelembaban relatif di luar ruangan dimanfaatkan untuk membuka dan menutup ventilasi dengan pengendalian temperatur yang lebih besar 27 oC dan kelembaban relatif yang lebih besar dari 40%. Buka tutup ventilasi menggunakan motor dc dan  driver L293D untuk logika arah gerakan motor dc. Hasilnya didapatkan sebuah rancang bangun buka tutup ventilasi agar temperatur dan kelembaban relatif yang nyaman terpenuhi dalam suatu ruangan.
Co-Authors A. Fadhil Desafa Adhitya Firmansyah Adrial, Rico Adwina, Amelia Ramadhani Afdal Afdal Afdal Afdal, Afdal Afdal Primanandra Afdhal Muttaqin Ahmad Fauzi Pohan Alawiya, Tuti Alimin Mahyudin Anggriani, Rini Annisa Anindya Arif Budiman Asriya, Putri Astuti Astuti Astuti - Astuti - Astuti Astuti Astuti Astuti Astuti Astuti Auliya, Khairina Dahyunir Dahlan Damayanti, Elok Dedi Mardiansyah Desri, Siska Laila Dian Fitriyani Dian Fitriyani Dian Fitriyani Dian Milvita Diego Diego Diego, Diego Dwi Pujiastuti Dwi Pujiastuti Dwi Puryanti Elistia Liza Namigo, Elistia Elvaswer Elvaswer Elvaswer Fachri Hernanda Fachri Hernanda Fahendri, F. Feriska Handayani Feriska Handayani Irka, Feriska Handayani Fiqi Diyona Firmansyah, Adhitya Frima Gandi Frima Gandi Frima Gandi, Frima Haldis Alvaro Hariza Faisal Hariza Faisal Harmadi Harmadi Harmadi Harmadi Hasibuan, Putri Berlian Hendra Saputra Hendra Saputra Herlina Nainggolan Herlina Nainggolan Hernanda, Fachri Heru Sagito Palka Heru Sagito Palka Husni, Khairiati Ilham Perdana Imam Taufik Imam Taufiq Imam Taufiq Iqbal Ramadhan Iqbal Ramadhan Irsyad, Rashid Muarif Isdi, Muhammad Ridho Juwita Safitri Juwita Safitri, Juwita Khairiati Husni Khairina Auliya Lestari, Yayuk M Farhan Ramadhan M. Ali Shafii M. Farhan Ramadhan Marzuki Marzuki Marzuki Marzuki Mohamad Nur Yahya Mohamad Nur Yahya Mohammad Ali Shafii Mora Mora Muhammad Arif Muhammad Arif Muhammad Iqbal Muhammad Kahfi Muhammad Kahfi Muhammad Nurul Rahman Muhammad Nurul Rahman, Muhammad Nurul Muldarisnur, Mulda Mutya Vonnisa Naela Amalia Zulfa Naela Amalia Zulfa Nini Firmawati Novi Elian Nurul Hasanah Nurwijayanti Oktarisa, Dian Olly Norita Tetra Palka, Heru Sagito Primanandra, Afdal Primas Emeraldi Puspita, Nabilla Putri Putra, Al Hamid Putri Asriya Putri Berlian Hasibuan Putri Puspita, Nabilla Rahmat Rasyid Rahmat Rasyid Ramacos Fardela Ramadhan, M. Farhan Rasyid, Rahmad Rini Anggriani Solly Aryza Sri Handani Sri Oktamuliani Sumariadi - Sumariadi - Suprijadi Suprijadi Trengginas Eka Putra Trengginas Eka Putra Sutantyo Triati Dewi Kencana Wungu Usna, Sri Rahayu Alfitri Veithzal Rivai Zainal Vitania Yulia Wildian Wildian Wilka Putra, Wilka Yasmin, Syaza Yulia, Vitania Zozy Aneloi Noli Zulfi Zulfi Zulfi Abdullah