Garuda - Garba Rujukan Digital

Electronic Information Board Based on AVR Atmega128 for TEWS in Cilacap Galih Mustiko Aji; Artdhita Fajar Pratiwi; Purwiyanto Purwiyanto; Chairunnisa Chairunnisa; Achmad Munir
Bulletin of Electrical Engineering and Informatics Vol 7, No 2: June 2018
Publisher : Institute of Advanced Engineering and Science

Dissemination methods of tsunami Information in Cilacap uses voice and siren. There are some constraints on the methods, especially in social aspects for particular society. Utilization of electronic information board is one of alternative solutions that can be offered to the society in responding tsunami information or warning. In this paper, a wireless electronic information board is designed to display the tsunami disaster warning visually. In normal condition or when there is no disaster, the information board can be utilized to display the information about evacuation procedure. The proposed electronic information board is implemented in multicolor using three sets of LED dot matrix panel P10 which have 32 x 16 pixels resolution and is controlled using microcontroller. The result showed that this device was capable to show the tsunami information such as “Status Awas”, “Status Siaga”, “Status Waspada”, and “Evacuation Route”.

Rancangan Alat Elektroplating dan Eksperimen Pelapisan Berbahan CuSO4 Terhadap Ketebalan Lapisan Mohammad Nurhilal; Taufan Ratri Harjanto; Saipul Bahri; Purwiyanto Purwiyanto
Infotekmesin Vol 12 No 1 (2021): Infotekmesin: Januari 2021
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v12i1.489

The electroplating method has the aim of producing a surface that has characteristics by the coating metal. The coating process requires a device that can place the ions from the coating material (anode) into the coated metal (cathode) through an electro-deposition process. Parameters such as temperature affect the electroplating process and greatly determine the coating result. The purpose of this study was to design the electroplating device, as well as to test the coating process using CuSO4 anode. The research method was carried out with an experimental approach through the manufacture of electroplating tools and coating testing of time variations of 20, 26, 32, 38, and 44 minutes and temperatures of 60, 65, 70, 75, and 80 oC. The results of the electroplating device design consist of frame components, plating and rinsing tubs, electrical systems, and cathode hanger. The coating results obtained the highest layer thickness 2.890 μm at a temperature of 80 oC for 40 minutes.

PENGARUH KOMPOSISI DAN WAKTU FERMENTASI CAMPURAN LIMBAH INDUSTRI TAHU DAN KOTORAN SAPI TERHADAP KANDUNGAN GAS METHANE PADA PEMBANGKIT BIOGAS Mohammad Nurhilal; Purwiyanto Purwiyanto; Galih Mustiko Aji
Jurnal Teknologi Terapan Vol 6, No 1 (2020): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Biogas is alternative energy produced from the anaerobic activity process of methane bacteria obtained by fermentation. Anaerobic activation is a sequence of microorganism processes breaking down biodegradable materials without oxygen. Biogas is mostly produced from cow dung and tofu industry waste that has the potential to contain methane (CH4), carbon dioxide (CO2) and hydrogen sulfide (H2S). To reduce the content of (CO2) and (H2S) and to increase the element of methane gas, the purification process is needed to do. Purification can be carried out by absorption techniques using water, NaOH solution, and zeolite/silica gel. The purpose of this study is to examine the methane gas content of variations in the composition of cow dung and tofu liquid waste and the fermentation time. The method used was an experiment by varying the composition of cow dung and tofu liquid waste by 40%: 60%; 50%: 50%; and 60%: 40%, as well as variations in the fermentation time of120, 168 and 216 hours of fermentation. The results showed that the highest methane gas content in the composition of a mixture of cow dung and tofu liquid waste was 50:50 in 168 hours of fermentation which was equal to 2.806%. The content of methane gas was influenced by the fermentation time, the pH conditions in the digester, and the intensity of stirring the biogas material in the digester.

UPAYA MENUMBUHKAN BUDIDAYA BERTANAM DI KELOMPOK WANITA TANI KELURAHAN TAMBAKREJA KABUPATEN CILACAP Mohammad Nurhilal; Galih Mustiko Aji; Purwiyanto Purwiyanto
Jurnal Pengabdian Masyarakat Teknik Vol 1, No 2 (2019): Jurnal Pengabdian Masyarakat Teknik (JPMT)
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Kelompok Wanita Tani merupakan salah satu dari kelompok masyarakat di Kelurahan Tambakreja Kabupaten Cilacap yang beranggotakan perkumpulan ibu-ibu warga setempat. Aktivitas rutin yang dijalankan oleh kelompok tersebut adalah budidaya bertanam. Akan tetapi kegiatan bertanam tersebut sudah tidak aktif kembali dikarenakan beberapa faktor seperti minimnya pengetahuan dalam budidaya bertanam, budidaya bertanam masih secara tradisional, tidak adanya perhatian dari pemerintah maupun akademisi untuk menangani masalah tersebut. Tujuandaya dari pengabdian kepada masyarakat ini untuk menumbuhkan kembali budidaya bertanam di kelompok Wanita Tani. Metode Pelaksanaan kegiatan Pengabdian kepada masyarakat ini meliputi observasi melalui keikutsertaan pelaksana pada kegiatan rutinitas kelompok Wanita Tani, Pembuatan green house, pelatihan dan praktek bertanam. Hasil kegiatan ini adalah rekayasa sosial berupa green house tipe line-to dengan konstruksi baja ringan, pelatihan dan praktek bertanam, dan penyusunan kegiatan baru di kelompok Wanita Tani. Dari hasil kegiatan dapat memberikan kontribusi bagi kelompok Wanita Tani dimana green house telah digunakan sebagai media tanam di kelompok. Kegiatan pelatihan dan praktek juga memunculkan semangat baru bagi kelompok Wanita Tani dengan tersusunnya agenda-agenda kegiatan kegiatan yang baru.

Rancang Bangun Monitoring Akuarium Dan Pakan Ikan Otomatis Berbasis Internet Of Things (IOT) Firman Burhani; Zaenurrohman Zaenurrohman; Purwiyanto Purwiyanto
Journal of Electrical Engineering and Computer (JEECOM) Vol 4, No 2 (2022)
Publisher : Universitas Nurul Jadid

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33650/jeecom.v4i2.4309

Dalam memelihara ikan hias dalam akuarium merupakan kegiatan yang cukup di tekuni oleh masyarakat dan menjadi sebuah hobi. Dalam memelihara ikan hias juga dapat mengutungkan dari segi ekonomi, ada beberapa ikan hias yang memiliki nilai jual yang cukup tinggi. Ketika kita memelihara ikan hias juga harus memperhatikan cara merawat ikan hias yang kita pelihara. Cara merawat ikan hias salah satunya dalam pemberian pakan ikan secara berkala dan memperhatikan air di dalam akuarium. Alat monitoring akuarium dan pemberi pakan ikan otomatis berbasis IOT telah dirancang untuk memudahkan pekerjaan perawatan dalam merawat ikan hias. alat ini menggunakan beberapa sensor yaitu sensor turbidity sebagai monitoring kejernihan air didalam akuarium, sensor Ultrasonik sebagai monitoring pakan di dalam wadah pakan ikan. Beberapa komponen lainya seperti RTC sebagai penentu waktu nyata, lalu ada motor servo sebagai pembuka dan penutup pakan ikan, dan LCD sebagai penampil hasil data kejerihan dan penampil data jarak pakan ikan. BLYNK digunakan untuk monitoring nilai kejernihan air, monitoring jarak pakan ikan. Selain itu juga untuk mengatur waktu makan ikan. Fungsi dari aplikasi BLYNK ini juga sebagai pemeberitahuan kejernihan air dan kapasitas pakan. Dari hasil pengujian diketahui bahwa nilai kejernihan air di dalam akuarium dan nilai jarak pakan ikan dapat dimonitoring melalui aplikasi BLYNK dengan baik. Jadwal otomatis pakan ikan bekerja sesuai setting jadwal pakan. Â Kata Kunci : IOT, sensor Ultrasonik, sensor turbidity, Motor servo, BLYNK

Design of Pico-Hydro Power Plant with Monitoring System Based on Internet of Things Fadhillah Hazrina; Purwiyanto Purwiyanto
Andalas Journal of Electrical and Electronic Engineering Technology Vol. 2 No. 2 (2022): November 2022
Publisher : Electrical Engineering Dept, Engineering Faculty, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/ajeeet.v2i2.29

Currently the electrification ratio in Banyumas Regency is around 79%. This means, of the 1.7 million residents of Banyumas Regency, only around 21% have not enjoyed PLN electricity. Those whose homes have not yet had electricity are on average residents who are on the slopes of the mountain slopes, and some residents in several groves in remote areas in Banyumas Regency which are very far from the PLN electricity network. This problem can be overcome by providing electrical energy by utilizing renewable alternative energy, one of which is micro hydro or pico hydro power plants on an individual or residential scale. Therefore, this research designed a simulation of a pico hydro power plant using a Pelton turbine which is expected to be able to provide benefits to the general public, this tool is equipped with remote monitoring using Google Firebase based on the Internet of Things which can be monitored via the Android application for monitoring Voltage, current and power use the INA219 sensor which has been programmed on Arduino Uno and Node MCU ESP8266. This tool uses a 12-24 Volt DC generator, produces DC electricity which is stored in a 12 Volt 5 Ah battery which is then converted using an inverter to become AC electricity. In this test using a 5 Watt AC lamp load, the battery voltage which was initially 12.6 Volts was reduced to 9.9 Volts, the lamp load was able to light up for 1 hour. In measuring the voltage and current, the generator produces an average voltage of 15.9 Volts and a current of 50.2 mA.

Analisis Performa PLTS Off Grid Untuk Sistem Desalinasi Metode Osmosis Terbalik Supriyono Supriyono; Purwiyanto Purwiyanto; Bayu Aji Girawan; Joko Setia Pribadi; Agus Santoso
Infotekmesin Vol 14 No 1 (2023): Infotekmesin: Januari, 2023
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v14i1.1651

Bondan Hamlet is a hamlet in Kampung Laut District, Cilacap. One of the community's problems is the lack of clean water and the PLN electricity network. In 2020, a desalination facility named Sidesi Mas will be built in Bondan Hamlet with a capacity of 240 liters/hour and using the reverse osmosis principle. The energy source for desalination uses a solar power plant (PLTS). Desalination management requires economic analysis, especially in determining the selling price of desalinated water. The cost of producing desalinated water can be calculated using the Cost of energy (CoE) value of the PLTS or the costs incurred to produce electrical energy per 1 kWh. To get the PLTS CoE, this article discusses a simulation to analyze the performance of PLTS desalination systems with Homer software. Homer performs analytical calculations based on a location input, solar energy potential, capacity, and costs of PLTS components as well as electrical load data. The simulation results show that PLTS energy production is 535 kWh/year, the CoE value is IDR 21,975/kWh and the production cost for producing clean water is IDR 183.13/liter.

ANALISIS STRUKTUR, PERILAKU DAN KINERJA PEMASARAN PADA USAHA TANI KENTANG DI KECAMATAN KEJAJAR, KABUPATEN WONOSOBO Ganjar Ndaru Ikhtiagung; Arif Nur Rahmadani; Berliana Ayu Dwika; Nancy Nurlita Sari; Nanda Puspita Zalfa Zahira; Nurmansyah Setyo Nugroho; Faidzin Firdhaus; Purwiyanto Purwiyanto
Jurnal Inovasi Daerah Vol. 1 No. 2 (2022): JID: Jurnal Inovasi Daerah, Desember 2022
Publisher : Badan Perencanaan Pembangunan Penelitian dan Pengembangan Daerah Kabupaten Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56655/jid.v1i2.23

Kejajar District is the center of potato farming in Wonosobo Regency, where the area has a larger harvest area and higher potato production yield than other sub-districts. This study aims to determine the level of coordination and collaboration between marketing institutions so that potato products can be distributed optimally. If one chain is disturbed, it will affect the other chains. This research was conducted by purposive sampling, and the research location is the most productive potato area in Wonosobo. The study started in May and ended in June 2022. The number of respondents in the study was 52 people, consisting of 4 wholesalers, 3 middlemen/shippers, 15 retailers, and 30 farmers. The results showed that the four wholesalers had overall control over the sales of potatoes in the Kejajar District. This condition illustrates that the potato market at the farmer level tends to have a strongly oligopsony market structure. Wholesalers have considerable capital power, so they can control middlemen. The marketing margin shows that marketing channel one provides a high price share to farmers of 46.15%, and the farmer share analysis received by farmers as potato producers in Kejajar District can be said to be efficient because the selling price received by farmers is more than 40% of the price at the consumer level.

Design of Pico-Hydro Power Plant with Monitoring System Based on Internet of Things Fadhillah Hazrina; Purwiyanto Purwiyanto
Andalas Journal of Electrical and Electronic Engineering Technology Vol. 2 No. 2 (2022): November 2022
Publisher : Electrical Engineering Dept, Engineering Faculty, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/ajeeet.v2i2.29

Currently the electrification ratio in Banyumas Regency is around 79%. This means, of the 1.7 million residents of Banyumas Regency, only around 21% have not enjoyed PLN electricity. Those whose homes have not yet had electricity are on average residents who are on the slopes of the mountain slopes, and some residents in several groves in remote areas in Banyumas Regency which are very far from the PLN electricity network. This problem can be overcome by providing electrical energy by utilizing renewable alternative energy, one of which is micro hydro or pico hydro power plants on an individual or residential scale. Therefore, this research designed a simulation of a pico hydro power plant using a Pelton turbine which is expected to be able to provide benefits to the general public, this tool is equipped with remote monitoring using Google Firebase based on the Internet of Things which can be monitored via the Android application for monitoring Voltage, current and power use the INA219 sensor which has been programmed on Arduino Uno and Node MCU ESP8266. This tool uses a 12-24 Volt DC generator, produces DC electricity which is stored in a 12 Volt 5 Ah battery which is then converted using an inverter to become AC electricity. In this test using a 5 Watt AC lamp load, the battery voltage which was initially 12.6 Volts was reduced to 9.9 Volts, the lamp load was able to light up for 1 hour. In measuring the voltage and current, the generator produces an average voltage of 15.9 Volts and a current of 50.2 mA.

Studi Perancangan Instalasi Penerangan dan Pengkondisi Suhu Ruangan Pada Gedung Bertingkat Las Mesin Vicky Prasetia; Erna Alimudin; Purwiyanto Purwiyanto; Muhamad Yusuf; Mohammad Nurhilal
Infotekmesin Vol 14 No 2 (2023): Infotekmesin: Juli, 2023
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v14i2.1895

Lighting is one of the most important requirements of a building. This is because inadequate lighting of a space can affect the health and comfort of activities in that space. In addition to less important lighting, room temperature adjustments, room temperature adjustments have a significant impact on comfort during activities in the room. This magazine describes the lighting and room temperature control design of the CilacapState Polytechnic Welder Shop. The method used in this study is a quantitative method. This method calculates the required lighting and room temperature control and compares it with the standards. 2 rooms increase the number of light points and 3 rooms change the type of lamp with a higher lumen. There are 8 rooms that are recommended to use air conditioners with SNI 91714189. According to the SNI, the number of air conditioners and the capacity of air conditioners adjusts to the size of the room.

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