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All Journal SPEKTRAL : Journal of Communications, Antennas and Propagation Jurnal Andalas: Rekayasa dan Penerapan Teknologi Electron: Jurnal Ilmiah Teknik Elektro JATAED: Journal of Appropriate Technology for Agriculture, Environment, and Development
Frenzi Agres Yudithia
Politeknik Kesehatan Siteba
Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Mechanical Engineering Other

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Pemasangan Lampu PJU Tenaga Surya Pada Unit Pelayanan Puskesmas Pembantu Jawa Gadut dan Batang Kabung Frenzi Agres Yudithia; Dona Juliandri; Agus Rahmad Timor; Ayu Hendra; Khairullah Khairullah; Erliwati Erliwati; Julia Nurmantika; Siti Nurqaidah; Ija Darmana; Basuki Ario Seno; Erdi Nur
Jurnal Andalas: Rekayasa dan Penerapan Teknologi Vol. 3 No. 1 (2023): Juni 2023
Publisher : Jurusan Teknik Elektro, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jarpet.v3i1.37

Abstract

Matahari merupakan sumber energi alami yang dapat dimanfaatkan baik untuk kesehatan pada tubuh manusia, maupun sebagai sumber penghasil energi listrik menggunakan sel surya. Jika diamati pemanfaatan sel surya ini dapat memenuhi penggunaan kebutuhan listrik harian sistem penerangan umumnya diluar ruangan. Pemahaman, pengetahuan, dan pemanfaatan tentang teknologi surya dalam sistem penerangan jalan menjadi pilihan dalam melakukan kegiatan pengabdian kepada masyarakat prodi D III Teknologi Elektromedis Poltekes Siteba. Kegiatan ini dapat memberikan dukungan program pemerintah agar terlaksananya pelayanan kesehatan yang baik khususnya pada Puskesmas Pembantu di wilayah Kota Padang. Umumnya Pustu sebagai unit pelayanan kesehatan yang sederhana di setiap wilayah Desa dalam ruang lingkup wilayah yang lebih kecil dan derajat kecanggihan yang lebih rendah. Selanjutnya dilakukan perencanaan memberikan fasilitas penerangan berupa pemasangan PJU Tenaga Surya di wilayah unit kerja tertentu Puskesmas Pembantu kota Padang. Berdasarkan teknik pemantauan yang telah dilakukan, Pustu Jawa Gadut di Kecamatan Pauh dan Pustu Batang Kabung di Kecamatan Koto Tangah memenuhi kriteria pemasangan yang akan dilakukan. Pengabmas ini merupakan bentuk pembelajaran antara dosen dengan mahasiswa, memberikan edukasi dilapangan sekaligus dapat meningkatkan kapasitas diri bagi mahasiswa dengan cara terlibat langsung berperan serta melakukan upaya membantu tempat pelayanan kesehatan masyarakat dilokasi pengabdian.
Perancangan Antena Vivaldi Antipodal 2 - 18 GHz untuk Radio Direction Finder Deri Latika Herda; Siska Aulia; Frenzi Agres Yudithia
Spektral Vol. 4 No. 1 (2023): April 2023
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/spektral.v4i1.5654

Abstract

The 2-18 GHz frequency band is a spectrum that is widely used for telecommunication systems, both military and civil. This is proportional to the number of illegal uses. This research develops an antipodal vivaldi antenna to support direction finding activities of illegal transmitters in the 2-18 GHz frequency band. Antenna design is a simulation using CST software by modifying the ground, widening the antenna arm, and increasing the length of the transmission line. The antenna design measures 94.14 x 73.2 mm on FR-4 substrate with a dielectric constant of 4.6 and a thickness of 1.6 mm. The simulation results show that the antipodal vivaldi antenna has a value -49.95378 dB ≤ S11 ≤ -10.022357 dB, 1.0066947≤ VSWR ≤1.9248251 and an average gain of 5.1558 dB in the 2-18 GHz frequency band.
Smart Air Humidifier For Air-conditioned Rooms Based On NodeMCU ESP8266 Yudithia, Frenzi Agres; Herda, Deri Latika; Wahyudi, Al Hafizh
JATAED: Journal of Appropriate Technology for Agriculture, Environment, and Development Vol. 1 No. 2 (2024): JATAED: Journal of Appropriate Technology for Agriculture, Environment, and Dev
Publisher : LEMBAGA KAJIAN PEMBANGUNAN PERTANIAN DAN LINGKUNGAN (LKPPL)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/jataed.v1i2.46

Abstract

The advent of smart technology has significantly revolutionized home appliance management, with notable advancements including the development of smart air humidifiers. This paper delves into the design, implementation, and performance evaluation of an advanced air humidifier specifically engineered for air-conditioned environments, emphasizing its integration with mobile phone technology. The innovative device incorporates the NodeMCU ESP8266 microcontroller, which facilitates Wi-Fi connectivity, and the DHT22 sensor, known for its precise temperature and humidity measurements. Key features of this humidifier include a Mist Maker that enhances humidity levels, an LCD display for real-time data visualization, and remote control capabilities via the Blynk app. Comparative performance testing of the DHT22 sensor against the HTC-1 Thermometer Hygrometer demonstrated high accuracy, with an average temperature error of 1.89% and a humidity error of 1.87%, resulting in accuracies of 98.11% and 98.13%, respectively. The humidifier effectively maintained desired humidity levels by toggling between on and off states within a 44% to 45% relative humidity range. This smart humidifier represents a significant leap forward in indoor climate management, offering superior user convenience and comfort. By harnessing modern microcontroller technology and advanced sensors, it delivers considerable improvements over traditional models, making it an invaluable tool for sustaining optimal indoor conditions in air-conditioned spaces.
Android-based Calorie Counting Monitoring Application Using Accelerometer Sensor Erliwati, Erliwati; Juliandri, Dona; Yudithia, Frenzi Agres; Sandella, Rani Wilda
JATAED: Journal of Appropriate Technology for Agriculture, Environment, and Development Vol. 1 No. 2 (2024): JATAED: Journal of Appropriate Technology for Agriculture, Environment, and Dev
Publisher : LEMBAGA KAJIAN PEMBANGUNAN PERTANIAN DAN LINGKUNGAN (LKPPL)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/jataed.v1i2.47

Abstract

The rapid evolution of wearable health monitoring technology, especially in the domain of calorie counting devices, underscores a notable advancement in integrating sensors with wireless communication for real-time health tracking. This study evaluates the design and performance of an Android-based calorie counting device that combines the MPU6050 accelerometer with the Wemos ESP8266 module. This integration is pivotal for delivering accurate caloric expenditure measurements. Testing revealed that the device operates with a high level of precision, achieving an average voltage measurement accuracy of 97.15%. Specifically, the battery voltage measured at 3.99V DC falls comfortably within the acceptable range of 3.7V DC to 4.2V DC. The TP4056 charger module, Wemos D1 R1 Mini, and MPU6050 accelerometer all maintained consistent voltages of 4.9V DC, aligning with their specified ranges. This consistency in voltage measurements indicates that the device components function within their designed parameters. Additionally, the device’s effective integration with the Blynk app significantly enhances its functionality. Users can input personal details such as age and step length into the app, which then accurately computes and displays the calories burned. This seamless interaction between hardware and software demonstrates the device’s capability to provide real-time health data effectively. Overall, the device exhibits reliable operation and precise performance, validating its design and confirming its successful operation within the anticipated parameters. This advancement contributes to the growing field of wearable technology by offering users a robust tool for health monitoring
Development of a Portable Spirometer with MPX5500DP Air Pressure Sensor and Atmega328 Microcontroller Juliandri, Dona; Erliwati, Erliwati; Yudithia, Frenzi Agres; Febrian, Fikri
JATAED: Journal of Appropriate Technology for Agriculture, Environment, and Development Vol. 1 No. 2 (2024): JATAED: Journal of Appropriate Technology for Agriculture, Environment, and Dev
Publisher : LEMBAGA KAJIAN PEMBANGUNAN PERTANIAN DAN LINGKUNGAN (LKPPL)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/jataed.v1i2.48

Abstract

This study presents the development of a groundbreaking portable spirometer designed to improve respiratory health monitoring by addressing the limitations of traditional, bulky spirometers that are confined to clinical settings. The device leverages the MPX5500DP air pressure sensor and the Atmega328 microcontroller to deliver accurate and sensitive measurements of air pressure changes, which are crucial for assessing lung volume and airflow. The integration of these components enables the spirometer to convert air pressure variations into electrical signals. These signals are processed by the microcontroller and displayed on an LCD screen, providing users with clear and precise lung function data. Rigorous testing and calibration of the spirometer have validated its performance, showing an overall accuracy of 94% for voltage measurements. Functional testing further confirms the device's precision, achieving an impressive 99.14% accuracy for inspiration capacity and 85.51% for expiration capacity. These results underscore the device’s reliability and effectiveness as a significant advancement in respiratory health technology. Its portable and user-friendly design makes it a practical tool for both personal health monitoring and clinical applications. By enhancing the accessibility and ease of respiratory assessments, this spirometer has the potential to improve everyday health management and clinical evaluations, thus representing a substantial leap forward in the field of respiratory health technology.
Analisis Kemampuan Putaran Bolak-Balik Roller Mixer Stastis dengan Setting Buzzer Pengingat Waktu Yudithia, Frenzi Agres; Herda, Deri Latika; Rossa, Anindita Aulia
ELECTRON Jurnal Ilmiah Teknik Elektro Vol 4 No 1: Jurnal Electron, Mei 2023
Publisher : Jurusan Teknik Elektro Fakultas Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/electron.v4i1.37

Abstract

Roller mixer is a laboratory tool to assist the process of homogenization in blood hematology examination. Generally, this tool works by rotating the rollers which mix the blood sample and anticoagulant agent. Apart from that, this mixer roller wobbles when it is running, while rotating in the same direction following a predetermined speed setting. In this research a static roller mixer prototype has been made, which can rotate back and forth with a pause setting every 30 seconds. So that the prototype can be used as a supporting tool in the laboratory, several test times are carried out for 1-15 minutes. Analysis of the ability to rotate back and forth the prototype was also carried out at different speed levels, namely 33 RPM, 40 RPM, 50 RPM, and 60 RPM. The results of the tests that have been carried out show that the prototype has a stable rotational speed of 31.5 seconds. The measurement has a time difference of 5% against the setting time. Based on the data it can be concluded that the increase in the roller speed level does not affect the change in the time test value that has been carried out.
Antena Vivaldi Antipodal 2-18 GHz untuk Aplikasi Direction Finding Sinyal Latika Herda, Deri; Suryana, Joko; Agres Yudithia, Frenzi; Maria, Popy; Raiqah Luthfiah, Najla
ELECTRON Jurnal Ilmiah Teknik Elektro Vol 5 No 2: Jurnal Electron, November 2024
Publisher : Jurusan Teknik Elektro Fakultas Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/electron.v5i2.238

Abstract

The demand for advanced direction-finding systems operating in the 2-18 GHz frequency range has surged due to their role in cellular, satellite, and military applications. This increased demand has also led to a rise in illegal transmissions within this spectrum, highlighting the need for accurate signal detection and localization. This paper discusses the design and analysis of a compact antipodal Vivaldi antenna (AVA) aimed at detecting illegal transmitters within the 2-18 GHz band. Direction-finding systems require antennas with wide bandwidth, high gain, and directional radiation patterns to meet performance criteria. The Vivaldi antenna, with its tapered slot design, offers these features, making it ideal for precise signal detection. Designed on an FR-4 substrate with a relative permittivity of 4.6, the antenna's performance was optimized using CST Microwave Studio software. The antenna was fabricated using wet etching on a copper conductor. Measurement results show that the antenna exhibits a directional radiation pattern, with a maximum gain of 10.527 dBi at 8 GHz, surpassing the simulated gain of 8.12 dBi, and an average measured gain of 5.975 dBi, exceeding the design requirement of 4 dBi. Operating effectively across a 2.7-18 GHz range, the antenna achieves a bandwidth of 15.3 GHz, fulfilling 95.625% of the specified range. Despite minor shifts in the reflection coefficient due to dielectric permittivity variations in the FR-4 substrate, the antenna demonstrates strong performance for direction-finding applications. This study highlights the AVA's potential for high-performance detection of illegal transmitters and discusses design challenges and opportunities for optimization
Co-Authors Agus Rahmad Timor Ayu Hendra Basuki Ario Seno Deri Latika Herda Dona Juliandri Erdi Nur Erliwati Erliwati Erliwati, Erliwati Febrian, Fikri Ija Darmana Joko Suryana Julia Nurmantika Juliandri, Dona Khairullah Khairullah Popy Maria Raiqah Luthfiah, Najla Rossa, Anindita Aulia Sandella, Rani Wilda Siska Aulia Siti Nurqaidah Wahyudi, Al Hafizh