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Analisis Pengaruh Perubahan Frekuensi Sistem Terhadap Kinerja Governor Pada PLTA Bakaru Unit 1
Full text linkPLTA Bakaru merupakan salah satu pembangkit energi yang harus menjaga kualitas listrik yang dihasilkan. Perubahan frekuensi yang terjadi dapat menurunkan kualitas daya, sehingga diperlukan perangkat pengendali untuk menjaga kestabilan frekuensi. Governor berperan penting dalam mengatur putaran turbin dan frekuensi sistem, dengan speed droop sebagai salah satu parameter utama yang memengaruhi kinerjanya. Penelitian ini bertujuan mengkaji pengaruh perubahan frekuensi sistem terhadap kinerja governor PLTA Bakaru Unit 1 serta menganalisis dampak variasi nilai speed droop terhadap kemampuan governor dalam menjaga kestabilan putaran dan frekuensi. Metode penelitian yang digunakan adalah kuantitatif deskriptif dengan pengumpulan data melalui observasi, wawancara, diskusi, dan studi dokumen di PLTA Bakaru Unit 1. Data tersebut diolah dalam bentuk perhitungan, grafik, dan analisis untuk menggambarkan karakteristik kinerja governor. Hasil penelitian menunjukkan bahwa dengan nilai speed droop 5%, putaran turbin turun menjadi 475 rpm pada beban penuh, sedangkan pada nilai speed droop 3%, putaran turun menjadi 485 rpm. Secara aktual, dengan speed droop 5%, governor mampu menjaga putaran dalam rentang 498–502 rpm, yang menunjukkan kinerja stabil. Selain itu, nilai speed droop 5% memungkinkan governor berkontribusi pada perbaikan frekuensi sistem dengan perubahan daya sebesar 25,2 MW/Hz, sementara pada nilai 3% perubahan daya lebih besar, yaitu 42 MW/Hz. Hal ini menegaskan bahwa pengaturan speed droop yang tepat sangat berpengaruh terhadap kestabilan frekuensi dan kinerja governor pada PLTA Bakaru
PENERAPAN MODUL MONITORING DAN KONTROL BERBASIS INTERNET OF THINGS PADA SEKOLAH SMK NEGERI 1 GOWA
Full text linkThe Internet of Things (IoT) represents the next evolution of the Internet and holds significant potential to drastically change lives and industries. A new era is soon to commence, where everyday objects will be equipped with connectivity to the Internet, enabling them to send and receive data without human interaction. In Indonesia, according to a survey by the Asia IoT Business Platform in 2017, only 11.8% of businesses had implemented IoT in their operations, with just 5.1% experiencing its benefits. Several barriers hinder businesses from adopting IoT, including high costs, security issues, incompatibility with legacy systems, system complexity, and a lack of skilled human resources. The purpose of creating this Microcontroller Learning Media is to advance the development of learning within campus environments, making teaching more engaging and fostering increased interaction between educators and students, thus creating a more enjoyable classroom atmosphere. This training board utilizes two types of microcontrollers: Arduino Uno and ESP8266. Each has its strengths, with the ESP8266 enhancing capabilities in IoT through Wi-Fi, while the Arduino Uno facilitates practical applications of programming and electronics concepts. The outcome of this project is an interactive training board that not only provides an innovative approach to learning but also strengthens student engagement and motivation. The practical implications of this research indicate that microcontroller education can be more effective and enjoyable through the implementation of interactive training tools. The research outcome is a portable prototype of a digital detection system that can be easily utilized for monitoring stunting and child development data for local health departments.
Keywords: Interactive Trainer, Learning, NodeMCU, and Learning Module
PKM PENERAPAN APLIKASI SMART VILLAGE DALAM UPAYA PEMBERDAYAAN MASYARAKAT LOKAL DALAM SISTEM INFORMASI DAN PENJUALAN PRODUK LOKAL DI DESA LANTANG KABUPATEN TAKALAR
Full text linkLantang Village, located in Takalar Regency, South Sulawesi, is a partner in the Community Partnership Program (PKM). The village is known for its local culture such as the Akkaleo' Dodoro and Allammangang harvest festivals which are annual celebrations as an expression of gratitude for the harvest. The majority of the population are farmers because of its large agricultural land. However, they still rely on traditional marketing methods such as traditional markets which are often difficult for the wider community to access. The main problems faced are limitations in the promotion of local crops and products and lack of market access for local producers, lack of information about the village and how to promote Lantang village activities. To overcome this, it is necessary to use internet technology with the "Smart Village" website application. This application not only serves as a center for village information systems but also as a platform to facilitate the sale of local crops and products. The PKM implementation method includes a preparatory stage that includes discussions with partners, the formation of a project team, and the preparation of training tools and materials. Furthermore, the implementation stage includes the development of the Smart Village web application as well as the introduction and training of village information system features and the buying and selling of village products. The features of the village information system include village data management, village geography, village culture, population data, village event agenda, village service information. Meanwhile, the village product buying and selling feature allows producers to upload products, manage orders. From the service process carried out, the Smart Village Application has been produced based on the needs of the village and can be seen on the https://desalantang.my.id/ and https://tmj.poliupg.ac.id/?p=798 website pages. Socialization and training have been carried out to the community, especially admins who will operate the application. And videos related to service in loud villages can be seen at the following link https://www.youtube.com/watch?v=fDhi-KLqqAg
Keywords: Lantang Village, Smart Village Application, Village Information Syste
PKM PELATIHAN KEWIRAUSAHAAN BAGI SANTRI BERBASIS SYARIAH DI PESANTREN AL FATAH DUSUN LEKO, KABUPATEN MAROS
Full text linkThis community service aims to foster entrepreneurial spirit and knowledge among students (santri) to enable them to
earn an independent income upon graduation. With the skills acquired, the students are expected to apply the knowledge
gained and establish small and medium enterprises as a foundation for their lives after completing their education at the
pesantren. The program is conducted at Pondok Pesantren Al Fatah Moncongloe, located in Dusun Leko, Bontomarannu
Village, Moncongloe Subdistrict, Maros Regency, South Sulawesi. The methods employed include training in both soft
skills and hard skills in entrepreneurship. The training involves various parties, such as Islamic entrepreneurship
instructors, the Maros Regency Department of Cooperatives, SMEs, Industry, and Trade (Dinas Koperindag), as well as *Korespondensi penulis:Irawati Razak, [email protected]
practitioners in organic farming and plantation management. The participating students receive comprehensive materials, including examples of micro, small, and medium enterprises (MSMEs) that can be developed in agriculture and plantation sectors. This initiative equips students with practical skills to support their economic independence and contribute to society.
Keywords: Entrepreneurship; Santri; business ; independen
IMPLEMENTASI SISTEM PENDETEKSI TUMBUH KEMBANG ANAK DAN GEJALA STUNTING BERBASIS INTERNET OF THINGS PADA UPT SD NEGERI 1 CENTRE PATTALASANG
Full text linkTakalar Regency is still recorded as an area with a high prevalence of stunting; however, there has been a significant decrease recently. According to the SSGI data in 2022, the prevalence of stunting in Takalar Regency is at 31.1 percent. The aim of this research is to develop a digital nutritional status measurement tool for children based on IoT (Internet of Things) and Android. This system will feature a monitoring application that displays several parameters, including height, weight, temperature, stress level, and heart rate via smartphone. This research incorporates two main components: hardware and software. The design of the IoT-based Nutritional Monitoring System for Children employs Node MCU as the controller to monitor the parameters of height, weight, temperature, stress level, and heart rate. The prototype development method used in this study involves several stages: problem analysis, design and planning, device creation, and testing. The findings of this research can serve as a perspective for assessing children's nutritional status and monitoring their growth in an integrated manner, without waiting for children to experience nutritional issues.
Keywords: Data Stunting, Portable Stunting Monitoring, and Real-time Stuntin
PEMBUATAN BUBUK PEWARNA ALAMI DARI DAUN SINGKONG (Manihot Esculenta Crantz) MENGGUNAKAN METODE FOAM MAT DRYING DENGAN PENGERINGAN MICROWAVE
Full text linkCassava leaves (Manihot esculenta crantz) contain alkaloids, tannins, saponins, flavonoids and phenolic compounds. The tannin compound content in cassava leaves is a brown dye which is the main pigment that can be used as a natural coloring agent. This research aimed to determine the optimal concentration of maltodextrin and drying time for producing natural dyes using the foam mat drying method. The process began by grinding cassava leaves and extracting the resulting cassava leaf powder with distilled water in a 1:10 ratio for 36 hours using the maceration method to obtain the extract. Then the extract was filtered, centrifuged and added with maltodextrin with varying concentrations of 3%, 5, 7%, 9%, 11% (w/v) and a foaming agent, namely Tween 80 with a concentration of 1.5% (v/v). The natural dyes were dried using a microwave based on time variations of 25 minutes and 40 minutes. The resulting natural dye products were analyzed for water content, solubility, yield and tannin content. The results showed that the best maltodextrin concentration and drying time was 11%, with a drying time of 40 minutes with a water content of 4.76%, solubility of 98.73%, yield of 11.45% and tannin content of 0.5 ppm.
Keywords: cassava leaves, drying, extraction, foam mat drying, natural dyes, tannin
PENGEMBANGAN METODE NIR SPEKTROSKOPI UNTUK DETEKSI CEPAT KADAR KAFEIN DALAM KOPI
Full text linkCoffee drinks are very popular because they can relieve fatigue and drowsiness, increase concentration, improve mood, and reduce the risk of depression. However, consuming coffee can have negative effects on the body. The caffeine content in coffee, if consumed excessively can cause headaches, stomach and digestive disorders, and interfere with heart function, which results in increased blood pressure. Caffeine in coffee can be determined using UV VIS Spectrophotometry or the Chromatography method. These methods take a long time and use a lot of organic solvents. This study aims to develop a NIR spectrometry method to detect caffeine levels in coffee quickly. The study began by reading the spectrum of several coffee samples, then caffeine analysis was carried out using the reference method. Data from the spectrum and values from the reference method were processed with NirCal Chemometric Buchi software to produce a calibration model. From the calibration process, the standard error calibration (SEC) value was obtained as 0.1459 and the determination coefficient (R2) as 0.858. This study shows that the results of caffeine analysis use the NIR method and the reference method are not much different, so the NIR method can be used for routine caffeine analysis in the laboratory.
Keywords: Coffee, Caffeine, NIR Spectroscopy, Method Developmen
PENGEMBANGAN TEKNOLOGI INTERNET OF THINGS (IoT) DALAM PENGENDALIAN SUHU DAN KELEMBABAN KUMBUNG JAMUR
Full text linkThe purpose of this study is to regulate the temperature and humidity of mushroom beetles to suit the conditions of mushroom growth and to optimize the Internet of Things (IoT) in monitoring climate conditions in mushroom beetles. The problem faced is the limitation of mushroom farmers in maintaining temperature consistency in the range of 22°C – 29°C and humidity ranging from 80% - 90% in mushroom beetles which causes seedling failure in baglogs, suboptimal growth, and decreased crop yields as well as monitoring carried out directly in mushroom beetles. The system is designed with several components such as using an Arduino uno and Raspberry Pi 3 B+ as a microcontroller, a DS18B20 sensor or humidity sensor, an SHT30 sensor or temperature sensor and other devices with system readings stored in a database with firebase web and displayed on the application, which allows automatic monitoring and control according to setpoints and commands on the program. The research method used consisted of designing the model and shape of the tool, designing the electronic system and control on the system, followed by the implementation and testing of the tool on the mushroom beetle. The test results show that the system is effective in maintaining a temperature of 22°C-29°C with an average temperature of 29°C and a humidity of 80%-90% with an average of 70%, according to the needs of the oyster mushroom shown in the application that has been made. This proves the effectiveness of the mushroom beetle temperature and humidity control system which is able to provide a solution for mushroom farmers, namely not having to monitor and water directly but can be done automatically even though it is in another place.
Keywords: Automatic Control,Mushroom house, Temperature and Humidity
PENERAPAN SISTEM KONTROL DISTRIBUSI AIR PAMSIMAS BERBASIS PLC DI DESA NISOMBALIA
Full text linkSeveral hamlets in Nisombalia village are located along the coastline, such as Kuri Caddi and Kuri Lompo hamlets. The water conditions around the coastal area are brackish to high-salinity water, making it difficult to use for daily needs. Moreover, the coastline is used as a beach tourism location. To address the issue of clean water shortages, the village government has collaborated with PAMSIMAS, a Community-Based Drinking Water and Sanitation Program, to build a water distribution system for Nisombalia village. Some of the problems in the PAMSIMAS water distribution in Nisombalia village include the long distance of the distribution pump, resulting in reduced monitoring of the pump condition, and the control system that does not yet rely on a water flow protection system, which could lead to pump damage. The community service method used is the implementation of a control system by designing and building a PLC-based control system and adding a 2 hp output water pump replacement to the existing PAMSIMAS system. The results obtained include the installation of a water distribution pump control panel that can operate automatically with the addition of a water flow switch (flow sensor) and the installation of a new 2hp pump to distribute water to coastal residents.
Keywords: Water Distribution; Control System; PLC; Water Pump; Nisombalia Villag
Rancang Bangun Mesin CNC 4 Axis Sebagai Media Pembelajaran
Full text linkPenelitian ini bertujuan untuk merancang dan membangun mesin CNC 4 axis sebagai media pembelajaran dengan penyimpangan maksimal sebesar ± 0,1 mm. Mesin CNC 4 axis memiliki tiga sumbu utama (X, Y, Z) serta sumbu tambahan (A) yang memungkinkan gerakan berputar, sehingga dapat memproses bahan dari berbagai sudut dan menghasilkan bentuk yang lebih kompleks dibandingkan dengan mesin CNC 3 axis. Penelitian ini dilakukan melalui beberapa tahapan, yaitu studi literatur, perancangan, pembuatan, perakitan, pengujian, dan analisis data hasil pengujian. Material yang digunakan dalam pengujian adalah kayu dan teflon, dengan hasil menunjukkan bahwa mesin CNC 4 axis dapat menghasilkan produk dengan presisi yang diharapkan. Sistem kontrol yang digunakan adalah LinuxCNC, yang memberikan fleksibilitas tinggi dalam pengoperasian mesin. Hasil pengujian menunjukkan bahwa mesin CNC 4 axis ini mampu beroperasi dengan baik pada semua sumbu, yaitu X, Y, Z, dan A, sesuai dengan gerakan yang diinput dalam program. Mesin ini memiliki potensi untuk digunakan secara efektif sebagai media pembelajaran di lingkungan pendidika