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Pengaplikasian Alat Ukur Tinggi, Berat Badan, dan Penentuan Status Gizi pada Balita Berbasis ESP32 WROOM 32 melalui Telegram Adrian, Diana Rahmi; Harmadi, Harmadi
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.13.1.82-88.2024

Abstract

Balita merupakan usia yang peka terhadap pertumbuhan dan perkembangan atau disebut juga dengan usia emas. Pertumbuhan dan perkembangan Balita dapat diketahui dengan pemantauan secara berkala status gizi berdasarkan usia, berat badan, dan tinggi badan. Ketidakseimbangan tumbuhkembang pada usia Balita dapat mengakibatkan efek jangka pendek dan jangka panjang mulai dari penurunan sistem kekebalan tubuh, kerusakan otak hingga dapat mengidap penyakit degeneratif saat dewasa. Telah dirancang alat ukur tinggi badan, berat badan, dan penentuan status gizi pada Balita berbasis Mikrokontroller ESP32 WROOM 32 melalui Telegram. Sensor yang digunakan pada penelitian ini adalah Ultrasonik HC-Sr04 dengan ketelitian 97,47% untuk mengukur tinggi badan Balita dan Load cell 40 kg dengan ketelitian 99,61% untuk mengukur berat badannya. Berdasarkan data input identitas (Id), usia, dan jenis kelamin serta data yang diukur oleh sensor menghasilkan keluaran berupa status gizi. Alat ini dapat mengukur tinggi, berat badan, dan menentukan status gizi Balita usia 1-5 tahun. Alat ukur ini sudah dapat menentukan status gizi Balita berdasarkan Berat Badan menurut Umur (BB/U), Tinggi Badan menurut Umur (TB/U), dan Tinggi Badan menurut Berat Badan (TB/BB) yang tampil pada TFT LCD dan Telegram Bot.  Pengukuran ini dilakukan pada enam orang Balita. Hasil dari pengukuran ini semua Balita memiliki status gizi kategori BB/U dan TB/BB dengan status normal namun pada kategori TB/U lima Balita berstatus gizi normal namun satu diantaranya memiliki status gizi kategori TB/U dengan status pendek berdasarkan Grafik Pertumbuhan Anak (GPA).
Sistem Monitoring Suhu pada Proses Pendingin Larutan Nutrisi Hidroponik Menggunakan Elemen Peltier dan TDS Meter Aisyah, Siti; Harmadi, Harmadi
Jurnal Fisika Unand Vol 13 No 3 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.3.336-342.2024

Abstract

Telah dilakukan perancangan sistem monitoring suhu pada proses pendingin larutan nutrisi hidroponik menggunakan elemen peltier dan TDS meter. Proses pendingin larutan nutrisi hidroponik menggunakan elemen peltier yang terhubung dengan sensor DS18B20 sedangkan TDS meter menggunakan nutrisi ABmix untuk menghasilkan konsentrasi terlarut sebesar 200 ppm – 1100 ppm. Elemen peltier aktif ketika suhu diatas 26°C sedangkan suhu dibawah 26°C elemen peltier mati. Konsentrasi terlarut yang dirancang dapat mengaktifkan buzzer ketika dibawah 200 ppm sedangkan diatas 200 ppm buzzer mati. Data berupa suhu dan konsentrasi terlarut yang didapat kemudian diproses oleh mikrokonteler Arduino Uno kemudian suhu dan konsentrasi terlarut ditampilkan ke LCD. Persentase error yang didapat pada pengujian sensor DS18B20 dengan alat pembanding sebesar 2,08% dan sensor TDS meter dengan alat pembanding sebesar 0,25%.
Pemanfaatan Computer Vision Sebagai Pemantauan Perkembangan Bibit Tanaman Tomat Berbasis IoT Isdi, Muhammad Ridho; Harmadi, Harmadi
Jurnal Fisika Unand Vol 13 No 2 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.2.234-240.2024

Abstract

Perkembangan bibit tanaman tomat memiliki faktor lingkungan yang harus diperhatikan seperti suhu, kelembapan udara dan intensitas cahaya. Faktor tersebut mempengaruhi keadaan bibit dari hari ke hari. Penelitian ini memanfaatkan computer vision untuk memantau perkembangan bibit tanaman tomat berbasis IoT yang diharapkan dapat memantau perkembangan bibit tanaman tomat secara berkala dan mengantisipasi bibit yang belum tumbuh. Pemantauan lingkungan pada bibit menggunakan sensor DHT11 untuk mendeteksi suhu dan kelembapan udara. Sensor LDR untuk mendeteksi intensitas cahaya. Kipas angin DC dan module mist spray fog maker untuk mengontrol keadaan suhu dan kelembapan udara pada tempat pembibitan. Pemantauan dengan computer vision menggunaan algoritma YOLOV8 untuk mendeteksi perkembangan bibit antara tumbuh dan belum tumbuh. Pengambilan data pengukuran dilakukan selama rentang waktu 10 hari. Hasil semua data pengukuran dikirim ke database dengan API, kemudian data tersebut ditampilkan melalui website. Perkembangan bibit tanaman tomat menggunakan sistem lebih cepat 1 hari daripada tidak menggunakan sistem. Pemantauan perkembangan bibit menggunakan YOLOV8 memiliki tingkat akurasi sebesar 96% yang berarti sistem dapat membedakan bibit yang tumbuh dan belum tumbuh. 
Sistem Fotobioreaktor dilengkapi Pemantauan Konsentrasi CO2 dari Kabut Asap pada Model Kebakaran Lahan Gambut Zhuhrii, Azzahra; Harmadi, Harmadi
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.13.6.827-833.2024

Abstract

Indonesia's peatlands are quite extensive and often cause fires that lead to haze. Haze contains harmful compounds, namely carbon dioxide (CO2). One of the efforts to reduce CO2 content is using a microalgae Chlorella vulgaris photobioreactor system. This research makes a photobioreactor system equipped with monitoring the concentration of CO2 emissions from haze on a peatland fire model. The photobioreactor is equipped with an MQ-135 sensor to detect CO2 concentration and an LM35 sensor to determine changes in temperature in the microalgae container. The temperature in the microalgae container is set in the range of 25ºC30ºC according to the habitat of microalgae. The output data from the sensors is processed by Arduino Uno R3. The measurement results of CO2 concentration and temperature are displayed on the I2C LCD in units of ppm and ºC. This study uses a variety of light sources in the form of red, green, blue LEDs and sunlight. The results of the study found that blue LED lights play a more active role to increase the ability of microalgae to reduce CO2 emissions in the room. The photobioreactor system using Chlorella vulgaris microalgae is able to reduce the concentration of CO2 produced from haze in the peatland fire model of 655.08 ppm down to 620.47 ppm within 1 hour.
Applications of Fiber Optic Sensor for Monitoring and Early Warning of Soil Shift on IoT based System Herlin, Helmi Septaria; Harmadi, -; Febrielviyanti, -; Muldarisnur, -
JOIV : International Journal on Informatics Visualization Vol 4, No 3 (2020)
Publisher : Society of Visual Informatics

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62527/joiv.4.3.219

Abstract

A fiber optic sensor system has been designed to monitor ground shift using a multimode FD-620-10 step index fiber optic cable equipped with an IoT-based data transmission system. The sensor system consists of a light source in the form of a diode laser, a fiber optic cable light wave guide, and an OPT101 photodetector. Data processing is done using the Arduino Uno R3 microcontroller and data transmission to the server using the Arduino Ethernet Shield. Localhost is a webserver that displays measurement data and sends e-mail early warning notification of ground shift hazards. Optical fiber is used to measure the value of ground displacement by utilizing changes in output voltage. The change in output voltage occurs due to variations in the change in the diameter of the optical fiber arch. The results of sensor testing obtained an average measurement error of 1.53%.
Comparison of Bright Band Radar from GPM and MRR Observation in West Sumatera Ramadhan, Ravidho; Marzuki, Marzuki; Vonnisa, Mutya; Harmadi, Harmadi; Hashiguchi, Hiroyuki; Shimomai, Toyoshi
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 11 No. 1 (2021)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v11n1.p50-62

Abstract

The Bright band (BB) observation can be used as an indication of the melting layer height. Measurement of BB from Normal Scan (NS) on Global Precipitation Measurement (GPM) had been compared with Micro Rain Radar (MRR), which is installed in Kototabang, West Sumatera (0.23° S; 100.32°E; 865 m above sea level). The GPM data were collected from December 2014 to June 2018 and compared with MRR observation from January 2012 to August 2016. The BB values from these instruments were compared with those recommended by the International Telecommunication Union Recommendation (ITU-R) P.839. The BB from GPM and MRR showed slightly diurnal and seasonal variations. BB observations from GPM and MRR show good agreement with slight diurnal and seasonal variations differences. BB observations are more similar when the intensity of solar radiation is lower, i.e., at night (18.00-24.00 LT) until early morning (00.00-06.00 LT). Furthermore, MRR showed a slight bimodal pattern in the seasonal variation, while GPM did not. Thus, the seasonal variation in the observation of both instruments is different. The most significant difference from the seasonal variation was observed in the summer season (June-August (JJA)). The mean BB of the two instruments is lower than the Freezing Height Level (FHL) value calculated from the ITU-R model. However, many BB from the two instruments (>36 %) have a BB altitude higher than FHL. Thus, the constant assumption of FHL in West Sumatera for the rain attenuation estimation of microwaves may not be appropriate.
Rancang Bangun Alat Ukur Konsentrasi Oksigen yang Dihasilkan oleh Fotobioreaktor Mikroalga Chlorella Vulgaris Nurrahmawati, Aminah; Harmadi, Harmadi; Biolita, Nadya Okta
Jurnal Otomasi Kontrol dan Instrumentasi Vol 10 No 1 (2018): Jurnal Otomasi Kontrol dan Instrumentasi
Publisher : Pusat Teknologi Instrumentasi dan Otomasi (PTIO) - Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/joki.2018.10.1.5

Abstract

AbstrakTelah dilakukan perancangan alat ukur konsentrasi oksigen yang dihasilkan oleh fotobioreaktor mikroalga Chlorella vulgaris. Sensor yang digunakan adalah sensor SK-25F dengan penguat non-inverting sebagai pengondisi sinyal. Penguat non-inverting digunakan untuk menguatkan tegangan keluaran sensor yang masih dalam skala mV supaya dapat diproses oleh mikrokontroler Atmega328 pada Arduino Uno R3. Pengukuran dilakukan pada dua fotobioreaktor yakni fotobioreaktor yang disuplai  dan yang tidak disuplai CO2 dan menggunakan tiga jenis sumber cahaya yaitu lampu halogen, LED dan cahaya matahari, selain itu, pengukuran juga dilakukan pada fotobioreaktor pada keadaan tanpa cahaya (0 lux). Nilai konsentrasi oksigen maksimum dihasilkan oleh fotobioreaktor yang disuplai dengan CO2. Persen error rata-rata alat yang dirancang sebesar 1,383% yang didapatkan dengan membandingkan nilai alat yang dirancang dengan alat ukur acuan (Gas Alert Microclip).
Prototype Sistem Pemantauan dan Pendeteksi Kebakaran Hutan dan Lahan Menggunakan Teknologi WSN Berbasis IoT Andeskob Topan Indra; Harmadi Harmadi; Marzuki Marzuki
Jurnal Penelitian Pendidikan IPA Vol 9 No 12 (2023): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i12.5736

Abstract

Forest and land fires are a recurrent issue in several Indonesian regions, necessitating advanced technological solutions for early detection and monitoring due to their significant impact. This research project focuses on developing a prototype system utilizing IoT-based Wireless Sensor Network (WSN) technology to detect forest and land fires. The prototype offers real-time remote monitoring of temperature, humidity, smoke levels, and wind speed in the forest through an Android app or web interface. To validate its performance, the prototype was compared to existing BMKG tools, with results showing minor temperature errors (2.41%) and a humidity error of 17.68%. The anemometer sensor exhibited a slight 4-second data transmission delay. Importantly, the prototype excelled in fire detection, effectively identifying temperature and humidity changes within a 2-meter radius or more indicative of fire outbreaks. This pioneering prototype promises to significantly enhance early warning and response mechanisms for forest and land fires in Indonesia, contributing to more effective environmental conservation and disaster management.
Monitoring system ammonia concentration using fiber optic sensor based surface plasmon resonance Huda, Erin Ficrah; Harmadi, Harmadi; Muldarisnur, Muldarisnur
Journal of Physics: Theories and Applications Vol 7, No 2 (2023): Journal of Physics: Theories and Applications
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jphystheor-appl.v7i2.78897

Abstract

A monitoring system for ammonia concentration in waters has been created using fiber optic sensors based on surface plasmon resonance (SPR). Monitoring is carried out to measure the decline in water quality due to the toxic compound ammonia from floating net cages (KJA) activities used as aquaculture sites. The sensor performance was improved by replacing the cladding using gold nanoparticles to increase the sensitivity of the fiber optic sensor based on the SPR phenomenon. The sensor consists of a laser diode as a light source, optical fiber as a waveguide and OPT101 as a photodetector. The Arduino Nano microcontroller is used as a data processor, LoRa as a transmission system and the MCU node as a data receiver. The results of measuring the ammonia concentration received by the MCU node are displayed on a Google spreadsheet in real time. Testing of measuring instruments is carried out by comparing the measurement results with a UV-Vis spectrophotometer. The test results obtained an accuracy value of 94.09% for optical fibers using the dip coating method and 78% for optical fibers using the thermal evaporation coating method.
Indonesia Sistem Pengukuran dan Analisis Debit Air pada Kebocoran Pipa PDAM Rumah Tangga Berbasis Internet of Things Dian Oktarisa; Meqorry Yusfi; Harmadi Harmadi
Jurnal Fisika Unand Vol 14 No 6 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.14.6.577-584.2025

Abstract

Pipe leaks in household PDAM systems often lead to water wastage and increased bills. This research develops a measurement and analysis system for water flow in household PDAM pipe leaks based on the Internet of Things (IoT) to address this issue. The system uses water flow sensors YF-S201 connected to a NodeMCU ESP8266 to measure water flow rates. It monitors two pipe branch areas, with each branch equipped with a water flow sensor at both the inlet and outlet points. The NodeMCU ESP8266 compares the incoming and outgoing water flow rates for each branch. If the flow rates are identical between the two sensors, the pipe is deemed safe; however, any discrepancy between the flow rates indicates a potential leak. The system can identify the area and severity of the leak based on the flow rate difference and calculate the water usage cost. Data collection is performed in the morning, afternoon, and evening, with six trials at each measurement time. The trials are conducted at 5-minute intervals to measure water volume and flow rate. Testing results show an average error percentage of 2.2% compared to a measuring cup, with system accuracy reaching 97.8%. Measurement data is displayed on an LCD and sent to the Blynk app via smartphone for remote monitoring.
Co-Authors Abdul Jailani Gusri Adhitya Rolando Erlangga Adhitya Rolando Erlangga, Adhitya Rolando Adila Nadia Aditya Eka Mulyono Adrial, Rico Adrian, Diana Rahmi Afdal Afdal Afdal Afdal Afdal, Afdal Afdhal Muttaqin Afdhal Muttaqin Agus Rubiyanto Agustri, Novia Dwi Ahmad Fauzi Pohan Aida Rahayu Akrajas Ali Umar Alawiya, Tuti Alfraidila, Fadil Alimin Mahyudin Alwan, Muhammad Naufal Aminah Nurrrahmawati Ammari, Syafiq Andeskob Topan Indra Andeskob Topan Indra Andeskob Topan Indra Ani Fatimah Ani Fatimah, Ani Anindy Bahri Annisa Oktaviani Putri Arif Budiman Arifah, Azizah Ghina Arsis, Asi Noflanda Asi Noflanda Arsis Astuti Astuti Astuti Astuti Aulia Rabiyu Rizky Awaluddin Awaluddin Ayu Afifah Al-Farzaq Ayu Putri Ningsih Azizah Ghina Arifah Azizah Ghina Arifah Azmi Wahyu Anggita Azmi Wahyu Anggita, Azmi Wahyu Azzahra Zhuhrii Bahri, Anindy Bambang Widiyatmoko Basri, Feri Helmi Bayu Hadi Saputro Bayu Hadi Saputro Bayu Hadi Saputro, Bayu Hadi Biolita, Nadya Okta Cahyandari, Joanica Intan Cahyani, Harum Choirun Nisa, Hanny Christara Cicelia Naomi Costrada, Aldo Novaznursyah Dahyunir Dahlan Damayanti, Elok Dea Kurnia Harysandi Dedi Mardiansyah Della Rahmawarni Deswilan, Sixtinah Dewita, Novia Ratna Diah Sundari Dian Fitriyani Dian Milvita Dian Oktarisa Diana Rahmi Adrian Dwi Pujiastuti Dwi Pujiastuti Dwi Puryanti Egri Junita El Basthoh Elfira Saufina Elistia Liza Namigo, Elistia Elma Yusnita Elma Yusnita, Elma Elvaswer Elvaswer Elvina, Yuli F Febrielviyanti Fadil Alfraidila Fajri Fachrezy Hamid Fajrul Huda Fani Anjelina Fani Anjelina Farah Syauqi Febby Trishe Ananda Febrielviyanti Febrielviyanti Febrielviyanti, - Feri Helmi Basri Feriska Handayani Irka, Feriska Handayani Firmansyah - Firmansyah - Firmansyah Firmansyah Fitri, Khairini Fitri, Riska Maya Fitri, Sari Widya Fitria Khairunnisa Gatut Yudoyono Geby Sri Ayu Oktavia Geby Sri Ayu Oktavia Genta Kampai Gusri, Abdul Jailani Hamid, Fajri Fachrezy Harum Cahyani Haryanto Saputra Havizzullah Havizzullah Havizzullah, Havizzullah Hawariyi Ola Yuzria Hawariyi Ola Yuzria Helmi Septaria Herlin Helmi Yusnaini Hidayati, Miskhatul Hiroyuki Hashiguchi Hiroyuki Hashiguchi Hiroyuki Hashiguchi Hiroyuki Hashiguchi, Hiroyuki Huda, Erin Ficrah Huda, Fajrul I Kadek Agus Sara Sawita Ikhsan, Khairatul Ikhsan, Lukita Sari Ikhwani, Miftah Imam Taufik Imam Taufiq Imam Taufiq Imam Taufiq Inggi Dwi Putri Inggi Dwi Putri Iqbal Ramadhan Iqbal Ramadhan Irawan, Tomi Isdi, Muhammad Ridho J. Tongkukut Joanica Intan Cahyandari Juanda, Muhammad Tri Junita, Egri Kampai, Genta Kemal, Badrul Mustafa Kemal, Badrul Mustafa Khairatul Ihksan Khairatul Ikhsan Khairini Fitri Khairunnisa, Fitria L. Luini Lisna Meylani Lopa, Reforma Lukita Sari Ikhsan M Fachri Yunus M Fachri Yunus M Farhan Ramadhan M. Ali Shafii M. Ali Shafii M. Farhan Ramadhan Manda, Poni Dwi Mardian Peslinof Marzuki Marzuki Marzuki Marzuki Marzuki Marzuki Marzuki Marzuki Mega Roza Lia Meqorry Yusfi Meyrlina, Luthfia Miftah Ikhwani Miskhatul Hidayati Mitra Djamal Mohammad Ali Shafii Mora Mora Mora Mora Mora Muchlian, Meli Muhamad Iqbal Muhamad Iqbal Muhamad Zainuddin Muhammad Arif Muhammad Arif Muhammad Faisal Muhammad Faisal Muhammad Kahfi Muhammad Kahfi Muhammad Naufal Alwan Muhammad Ridho Isdi Muhammad Shadri Muhammad Tri Juanda Muhammad Zikri Dimas Kurniawan Muharmen Suari Muldarisnur, Mulda Mutya Vonnisa Muzirwan Muzirwan Nadia Yudia Putri Nadia, Adila Nadya Okta Biolita Naela Amalia Zulfa Naela Amalia Zulfa Najmah Neneng Fitrya Nini Firmawati Nola Fridayanti Nola Fridayanti, Nola Nor Azlan Mohd Aris Novia Dwi Agustri Novia Ratna Dewita Nurrahmawati, Aminah Nurrrahmawati, Aminah Nurul Annisa Nurul Annisa Nurul Hasanah Okky Frananda Putra Okta Ramadhani Pratama, Andra Putra, Okky Frananda Putri, Annisa Oktaviani Putri, Inggi Dwi Putri, Nadia Yudia Putri, Syerly Eka Rabiatul adawiyah Rabiatul Adawiyah Rahayu, Aida Rahmad Rasyid Rahmad Rasyid Rahmat Rasyid Rahmat Rasyid Rahmawarni, Della Ramacos Fardela Ramadhan, M. Farhan Ramadhan, Ravidho Ramadhani Perdana Ramadhani Perdana, Ramadhani Rani Delvihardini Rasyid, Rahmad Ravidho Ramadhan Ravidho Ramadhan Reforma Lopa Rhahmi Adni Pesma Rini Oktaviani Riska Maya Fitri Rizky, Aulia Rabiyu Robi Zulfahri Rodhiah, Salsa Ariani Roni Syafrialdi Roni Syafrialdi, Roni Salsabila, Wulandari Sandra Sandra Saputra, Haryanto Sari Widya Fitri Saufina, Elfira Seni Herlina Shadri, Muhammad Shimomai, Toyoshi Sholihun, Sholihun Siti Aisyah Siti Aisyah Siti Chadijah Sixtinah Deswilan Sixtinah Deswilan Sixtinah Deswilan Sri Handani Sri Oktamuliani Suari, Muharmen Subhan Fahmi Nasution Sugeng Nugroho Suhariningsih Sundari, Diah Suryadi Suryadi Suryanto, Wiwit Syafiq Ammari Syauqi, Farah Syerly Eka Putri Sylvia Adhiani Tomi Irawan Toyoshi Shimomai Toyoshi Shimomai Trengginas Eka Putra Sutantyo Tuti Andriani Usna, Sri Rahayu Alfitri Veithzal Rivai Zainal Wildan Panji Tresna Wildian Wildian Wildian Wildian Wulandari Dwi Safitri Yetria Rilda Yozi Amasda Yude Yude, Yozi Amasda Yuli Elvina Yuliandari, Annisa Yunus, M Fachri Zamora, Ronaldi Zhuhrii, Azzahra Zulfahri, Robi Zulfi Zulfi Zulfi Zulfi Zulfi Zulfi Zulfi Zulfi