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All Journal Jurnal Fisika Unand Journal of Information Technology and Computer Engineering Jurdimas (Jurnal Pengabdian Kepada Masyarakat) Royal Jurnal Hilirisasi IPTEKS (JHI) Jurnal Ilmu Fisika Jurnal Pendidikan Fisika dan Teknologi BERNAS: Jurnal Pengabdian Kepada Masyarakat Natural Science: Jurnal Penelitian Bidang IPA dan Pendidikan IPA Jurnal Pengabdian kepada Masyarakat Nusantara Indonesian Journal of Community Empowerment and Service
Nini Firmawati
Universitas Andalas
Religion Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Neuroscience Nursing Physics Public Health Social Sciences Veterinary Other

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Prototipe Sistem Pengosongan Kantong Urin Secara Otomatis Menggunakan Sensor Ultrasonik Berbasis Internet of Things (IoT) Rahma Nori; Nini Firmawati
Jurnal Fisika Unand Vol 13 No 1 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.1.29-35.2024

Abstract

A prototype design of an automated system for urine bag emptying using an Internet of Things (IoT) based ultrasonic sensor has been developed. The system comprises an HC-SR04 Ultrasonic Sensor, an SG90 Micro Servo Motor, NodeMCU ESP8266, a Liquid Crystal Display (LCD), and Blynk integration. The servo motor is employed to open the valve for urine discharge and close it once the process is completed. The servo motor's movement is determined by the urine's detected height using the ultrasonic sensor, and it can be controlled through the Blynk platform. The reference heights for urine management are set at half the urine bag's capacity or 8 cm, triggering a 180º rotation of the servo motor, and at 0 cm, causing the servo motor to move to 0º. The measured urine height is displayed on the LCD and the Blynk IoT interface. The ultrasonic sensor's characterization results reveal an error percentage of 0.02%, a sensitivity value of 58.203 µs/cm, an offset value of 0.0123, and a coefficient of determination R2 of 0.9999. Based on the conducted measurements, analysis, and testing, it can be concluded that the system functions effectively.
Rancang Bangun Alat Ukur Kadar Air dan Keasaman untuk Mengetahui Kualitas Madu Berbasis Mikrokontroler Taufik Saputra; Nini Firmawati
Jurnal Fisika Unand Vol 13 No 6 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.6.749-755.2024

Abstract

Honey is a naturally sweet substance produced by honeybees from the nectar of flowers. The composition of honey is so complex that the benefits of honey in the pharmaceutical, food, beverage and aesthetic industries are enormous. One of the quality parameters of honey is the level of moisture and acidity. This research aims to analyse the quality of honey based on moisture content and acidity. To test this, a tool is needed that can detect moisture content and acidity in honey. The design of a tool to measure moisture content and acidity to determine the quality of honey using capacitive soil moisture sensor and pH sensor has been made. The testing of the tool is done with 3 variations of honey samples available in the market. The test results of 3 honey samples with the designed tool were compared with the pH meter and Brix refractometer. The percentage error obtained in testing the designed tool is 12.5% for moisture content and 3.89% for acidity. Based on the research results, it is found that the designed tool can read the value of water content and acidity in each honey sample.
Rancang Bangun Sistem Otomatisasi Lampu Belajar Menggunakan Sensor PIR dan Sensor Load Cell Berbasis Mikrokontroler Arduino Rakayama, Iqamatulhaq; Firmawati, Nini
Jurnal Fisika Unand Vol 11 No 2 (2022)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.11.2.228-234.2022

Abstract

Telah dilakukan rancang bangun sistem otomatisasi lampu belajar menggunakan sensor Passive Infrared dan sensor Load Cell berbasis mikrokontroler Arduino untuk mengontrol nyala lampu belajar secara otomatis. Sistem dilengkapi dengan pendeteksi sinar inframerah dari tubuh manusia menggunakan sensor Passive Infrared (PIR) dan penimbang berat badan menggunakan sensor Load Cell, Relay untuk mengontrol arus listrik pada lampu, dan RF433 sebagai komunikasi antar rangkaian. Sistem ini juga bekerja berbasis Arduino sebagai mikrokontroler. Hasil dari penelitian ini menunjukkan bahwa sensor PIR memiliki jarak pembacaan maksimal 6m dan sudut pembacaan maksimal 70o ke kiri dan kanan. Sensor Load Cell dapat menimbang berat badan secara akurat dengan persentase kesalahan 0.61%. Rangkaian keseluruhan pada sistem ini dapat bekerja dengan baik sesuai dengan program perangkat lunak yang dimasukkan, yaitu lampu akan menyala jika sensor keluaran sensor PIR 1 (HIGH) dan berat badan yang dideteksi sensor Load Cell lebih dari 15kg. Sebaliknya alat tidak akan bekerja dan lampu tidak akan menyala jika keluaran dari masing-masing sensor tidak sesuai dengan logika pemrograman.
Prototipe Sistem Kontrol dan Monitor Tanaman Hidroponik pada Sayuran Pakcoy Berbasis Internet of Things Muhammad Fadlil; Firmawati, Nini
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.14.2.191-197.2025

Abstract

A prototype of hydroponic plant control and monitoring system for pakcoy vegetables using NodeMCU ESP8266 with notification via Telegram has been produced. This system can facilitate farmers to monitor and control hydroponic plants remotely with parameters of plant height, pH, water level of hydroponic plants. The prototype is designed using 2 HC-SR04 ultrasonic sensors, pH sensors, servo motors, NodeMCU ESP8266, and telegram applications using the Internet of Things (IoT). Tests were carried out by observing pakcoy plants for 28 days after seeding. The measurement results displayed via telegram found that the percentage error of plant height, water pH, and water level are 1.88%, 1.38%, and 6.81%, respectively, and the water tap can function when the water level on the plant is less than 5 cm.  Based on the results obtained, this system can work well.
Rancang Bangun Sistem Pelipat Pakaian Menggunakan Sensor Load Cell dan Sensor Ultrasonik Berbasis Arduino Mega2560 Jihan Latifah Hanum; Nini Firmawati
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.14.1.15-21.2025

Abstract

A clothes folding tool has been made using 4 load cell sensors and a clothes container using an ultrasonic sensor based on the Arduino Mega2560. Load cell sensor to detect mass on the folding board, if the mass is small equal to 375g, then the MG996R servo motor is active, if the mass is greater than 375g, then the servo motor is not active, the LCD screen displays excess mass. The HC-SR04 ultrasonic sensor detects the distance between clothes and clothes folders. If the detected distance is 2 cm, the buzzer sounds more than once. The buzzer also sounds once indicating the folding process is complete. The characteristics of load cell sensors 1, 2, 3, and 4 have linear correlation coefficients of 0.9985, 0.9985, 0.9968, and 0.998 respectively. The characteristics of the ultrasonic sensor have a linear correlation coefficient of 1. The average folding time is obtained from the folding time using a folding tool and the folding time manually 3 times for each garment. The average manual folding of shirt A, shirt B, trousers A, and trousers B was 9.07s, 15.34s, 9.68s, and 10s respectively, while using a folding tool was 5, respectively. 47s, 5.49s, 5.44s, and 5.47s. Testing variations in clothing mass with clothing folding time, it was found that variations in clothing mass had no effect on the length of time folding clothing
SISTEM MONITORING KEKERUHAN AIR MENGGUNAKAN SENSOR TURBIDITY DAN TRANCEIVER LORA EBYTE E220 PADA PENYEDIAAN AIR MINUM DAN SANITASI MASYARAKAT (PAMSIMAS) Jannah, Wardatul; Firmawati, Nini
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.14.2.103-109.2025

Abstract

water turbidity monitoring system has been created using a turbidity sensor and LoRa Ebyte E220 transceiver for the provision of drinking water and community sanitation (PAMSIMAS). The tool designed in this research uses two LoRa Ebyte E220 transceivers, one functions as a transmitter (sender), and the other functions as a receiver (receiver). The sending unit is equipped with a SEN0189 turbidity sensor to detect water turbidity levels, as well as a NodeMCU ESP8266 as a data processor and sender. The receiving unit is equipped with a NodeMCU ESP8266 as a data processor, an LCD to display the results of monitoring turbidity levels, and a buzzer as an alarm that sounds if the water turbidity exceeds a certain threshold. The webserver used is ThingSpeak. The research results show that the system is capable of transmitting water turbidity level data through the air by the Ebyte E220 LoRa transceiver. The SEN0189turbidity sensor system has an average error percentage of 7.6%. This error can be caused by several factors, including the sensor's sensitivity to changes in light intensity, variations in impurity particles in the water, and the sensor's inability to distinguish the types of particles present in the water. LoRa transceivers can transmit data when there is a barrier up to 800 m, while without a barrier it reaches 2000 m. The values obtained from the sensors are displayed on the LCD and ThingSpeak.
Indonesia Prototipe Sistem Kontrol Suhu, Kelembaban, dan Debu Ruangan Secara Otomatis Berbasis Arduino Uno Saumi, Amalia; Nini Firmawati
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.14.1.29-35.2025

Abstract

A prototype design of an automatic room temperature, humidity, and dust control system based on Arduino Uno has been carried out. This control system is equipped with a DHT22 sensor to detect temperature and humidity, a GP2Y1010AU0F sensor to measure dust density, an L298N motor to regulate the speed of the DC fan and blower, a relay as an automatic switch for the humidifier, and an LCD to display the values read by the sensor. The system works if the measured temperature is more than 30℃ the DC fan is active, if the humidity is less than 60% the humidifier module is active, and if the detected dust density is more than 150 μg/m3 the blower is active to remove dust. The results of the study showed that the system can work well according to its respective functions. When the measured temperature and humidity exceed the set values, the fan and humidifier work to stabilize the room temperature and humidity. When the detected dust density exceeds the set value, the blower works to remove dust in the room with a success rate of 80.07%. The DHT22 sensor can measure room temperature and humidity with a temperature error value of 2.81% and a humidity error value of 5.53%. While the GP2Y1010AU0F sensor can detect dust density with an error value of 3.54%.
Rancang Bangun Mesin Pembuat Minuman Kopi Otomatis Berbasis Arduino UNO dengan Kontrol Android Firmawati, Nini; Farokhi, Gentha; Wildian, Wildian
JITCE (Journal of Information Technology and Computer Engineering) Vol. 3 No. 01 (2019)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jitce.3.01.25-29.2019

Abstract

Design of automatic coffee drink maker machine based on arduino uno has been successfully done. Coffee drink maker machine system consists of four parts, namely the selection of the menu of coffee drinks, detection of coffee cups, pouring coffee, sugar and cream and pouring water. The selection of coffee drinks menu is done through applications on android smartphone which is connected to the engine via a bluetooth module HC-06. Detection of cup using the censor of photodiodes. Coffee, sugar, and cream is poured and measured using solenoid doorlock. For pouring water using velve selenoid. There are three menu choices on a machine that are bitter coffee, sweet coffee, and cream coffee. For the production of bitter coffee drinks solenoid doorlock pouring coffee an average 5.03 grams in 3 seconds. For the production of sweet coffee drinks solonoid doorlock coffee pouring an average 5.33 grams sugar and pouring an average 17.50 grams within 8 seconds. For the production of coffee cream solenoid doorlock pouring coffee an average 5.27 grams, pouring sugar an average 17.46 grams and pouring cream an average 5.42 grams within 11 seconds. For pouring water using velve solonoid and stops automatically when the distance between the sensor and the surface of the ultrasonic water reaches 5 cm by the time pouring over the last 13 seconds.
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
Alat Ukur Kadar Air Biji-bijian Secara Mobile Berbasis Internet Of Things Sebagai Indikator Kualitas Komoditas Barang Dagang Zidane Walid, Kholiq; Firmawati, Nini
Jurnal Fisika Unand Vol 14 No 4 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.14.4.325-331.2025

Abstract

Research has been conducted on a mobile IoT-based moisture content measuring device as an indicator of the quality of cocoa beans, yellow coffee, and robusta coffee. Moisture content is extremely important in maintaining the quality of beans because it directly affects their quality, taste, aroma, shelf life, and safety for consumption. This device uses a Capacitive Soil Moisture Sensor to detect moisture content by measuring changes in capacitance caused by dielectric changes. The moisture measuring device consists of a Capacitive Soil Moisture Sensor as the moisture sensor, an ESP32 as the data processor, an LCD to display the moisture content percentage, an LED as an indicator of high moisture levels, and a Smartphone as a measurement database through Blynk. The device was tested by measuring the moisture content of three types of grain samples: cocoa beans, yellow coffee, and robusta coffee. Each sample consisted of 10 variations of moisture content measured using a comparison tool, the Cerra Tester. The average measurement error percentages were found to be 3.02% for yellow coffee, 3.12% for cocoa beans, and 3.35% for robusta coffee. From the researchresults, the designed tool is as expected and works well.
Co-Authors A. Fadhil Desafa A.A Rafid Raihan Adrial, Rico Afdal Afdal Afdal Afdal Afdal Afdal, Afdal Afdhal Muttaqin Ahmad Fauzi Pohan Akrajas Ali Umar Akrajas Ali Umar Alimin Mahyudin Alvin Maareof Andhika Dwipanur Andre Mahendra Andre Mahendra Andriati, Susi Arif Budiman As Shiddiq, Muhammad Astuti Astuti Astuti - Dahyunir Dahlan Damayanti, Elok Dedi Mardiansyah Dian Fitriyani Dian Fitriyani Dian Milvita Dilla Oktafiyani Dwi Pujiastuti Dwi Pujiastuti Dwi Puryanti Dwipanur P.U, Andhika Dwipanur, Andhika Elistia Liza Namigo, Elistia Elvaswer Fani Anjelina Farokhi, Gentha Feriska Handayani Feriska Handayani Irka, Feriska Handayani Fiqi Diyona Geby Sri Ayu Oktavia Gentha Farokhi Gina Yulia Sari Haldis Alvaro Harmadi Harmadi Harmadi Harmadi Hidayati, Jamilatul Imam Taufiq Imam Taufiq Ines Monica Sari Iqamatulhaq Rakayama Jamilatul Hidayati Jihan Latifah Hanum Kuwat Triyana Kuwat Triyana M. Ali Shafii Maareof, Alvin Mahdalena, Feby Husna Marzuki Marzuki Marzuki Marzuki Marzuki Marzuki Meqorry Yusfi Mohammad Ali Shafii Monica Indah Tiara Muhammad As Shiddiq Muhammad Fadlil Muharmen Suari Muldarisnur, Mulda Mutya Vonnisa Nelvi Wardani Nia Sulfiani R Nina Nina Nina Nina Nori, Rahma Nurul Annisa Nurwijayanti Olly Norita Tetra Putri, Salsabila Eka Putri, Suci Yulia Rahma Nori Rahmat Rasyid Raihan, A.A Rafid Rakayama, Iqamatulhaq Ramacos Fardela Rima, Riry Djule Riry Djule Rima Saputra, Taufik Sari, Gina Yulia Sari, Ines Monica Saumi, Amalia Solly Aryza Sri Handani Sri Oktamuliani Suci Yulia Putri Sulfiani R, Nia Taufik Saputra Tiara, Monica Indah Trengginas Eka Putra Trengginas Eka Putra Sutantyo Usna, Sri Rahayu Alfitri Wahdini, Yulia Wahyuni, Ade Wardani, Nelvi Wardatul Jannah, Wardatul Wildian Wildian Wildian Wildian Yulia Wahdini Yusfi, Meqqory Zakhiah, Putri Zidane Walid, Kholiq Zozy Aneloi Noli Zulfi Zulfi Zulfi Zulfi Zulfi Zulfi Zulfi, Zulfi