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Mcuabsensi Pemanfaatan Hostpot Nodemcu, Aplikasi Android, Dan Raspberry Untuk Pengambilan Absensi Online Afdal; Idmayanti, Rika; Prabowo, Cipto
JITSI : Jurnal Ilmiah Teknologi Sistem Informasi Vol 1 No 3 (2020)
Publisher : Jurusan Teknologi Informasi - Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1542.088 KB) | DOI: 10.30630/jitsi.1.3.9

Abstract

Online attendance system with the use of raspberries as a local server to synchronize system data on the server and attendance data processing, nodemcu as a tool that can transmit hostpot signals for attendance and android connected to the nodemcu hostpot with the android application for each event attendance in taking attendance . In this system Attendance can be taken at a distance of less than 30 meters by utilizing the nodemcu hostpot signal, an attendance device with additional battery power in anticipation of a main power outage, a local Raspberry pi server that is always synchronized with a public server so that when the internet network dies requesting attendance can still be processed and stored, the application that stores the mac address of the event participants so that there is only one warak on one user to minimize attendance cheating fraud, attendance taking and event permits can be done on the android application, taking attendance allows can be taken together to overcome attendance taking . This attendance system utilizes Restfult API technology with JavaScript Express programming framework, microcontroller with Arduino IDE C programming, websites with React.js JavaScript programming framework, and android applications with React Native JavaScript programming. In the design of this attendance system has several methods, namely problem identification, literature study, consultation, system analysis, system design, and implementation. The result of this system is a system that can streamline the taking and minimize attendance fraud
Torque and Power Testing of the Pelton Turbine Wardianto, Dedi; Anwar, Irwan; Afdal
Jurnal Teknik Mesin Vol 11 No 1 (2021): Jurnal Teknik Mesin Vol.11 No.1 April 2021
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

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Abstract

Energy sources that can be renewed in Indonesia according to Asean energy sources, one of which is microhydro that uses water as a source of energy from a turbine. The potential energy of water is converted into kinetic energy in the nozzles. The water coming out of the nozzle that has a high speed hits the turbine blade. After hitting the blade direction the flow velocity changes so that the momentum changes (impulses) so that the turbine wheel will rotate. Pelton Turbines are impulse turbines which consist of a set of road blades that are rotated by a jet of water sprayed from one or more devices called nozzles. Pelton Turbine is one of the most efficient and suitable types of water turbines used for high head and small flow discharge. Pelton turbines have several advantages including turbine efficiency which is relatively stable at various changes in flow discharge. The purpose of this writing is to find out and provide insight into the torque and power of the Pelton turbine and the effect on the valve openings that are varied.
Vibration Analysis to Detect Failure Bearing of Centrifugal Pump “Black Liquor Pump” in PT. Riau Andalas Pulp & Paper (RAPP) Anwar, Irwan; Afdal
Jurnal Teknik Mesin Vol 11 No 2 (2021): Jurnal Teknik Mesin Vol.11 No.2 October 2021
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

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Abstract

Bearing is one of machine element specialized to hold the load both radial and thrust load, also in supporting the shaft while operating. Because of a factor such as friction that occurred between bearing and shaft It would be influencing to machine’s performance is totally dependent to the currently used bearing and inefficiently operation. This research’s aim was to be analyzed what kind of failure and detected the cause of it failures that appear influencing to the bearing life time. The method used to research of that failures using relevant update issue such as literature study, surveying, collecting data. The result of this researching showed the cause of that bearing failure was happened at the cage of bearing and broken of bearing ring. Furthermore, supervising by control of a good maintenance schedule, making influence to the effect of load on reliability. So the remaining life of bearing had been investigated, showing that a potential decrease in remaining life significantly.
Vertical Chlorophyll-a Concentration Profiles Observed on The Western Coast of Northern Sumatera During the 2017 Northeast Monsoon Iskandar, Iskhaq; Sari, Qurnia Wulan; Wahyudi, Aan Johan; Afdal; Mardiansyah, Wijaya
Science and Technology Indonesia Vol. 7 No. 1 (2022): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2022.7.1.36-40

Abstract

Subsurface chlorophyll-a (chl-a) concentration variability on Sumatera’s Northwestern coast is part of the phytoplankton biomass that supports and enriches the region’s fisheries supplies. During the 2017 northeast monsoon season from 25th November 25 to 11th December, the Ekspedisi Widya Nusantara (E-WIN) collected data from 16 stations. The finding demonstrates a rise in subsurface chl-a concentration as you get closer to the coast. Furthermore, the deep chl-a maximum (DCM) is only found offshore, with depths−3 between 30 to 50 m and chl-a concentrations of 0.07 to 0.25 mg.m. Surface chl-a concentrations near the coast were found to be high, ranging from 0.2 to 0.25 mg.m-3
Aplikasi Peminjaman Laboratorium Pada Fakultas Teknologi Pertanian Universitas Andalas Meidelfi, Dwiny; Lestari, Tri; Afdal; Novri
JITSI : Jurnal Ilmiah Teknologi Sistem Informasi Vol 2 No 2 (2021)
Publisher : Jurusan Teknologi Informasi - Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1749.904 KB) | DOI: 10.30630/jitsi.2.2.32

Abstract

Campus laboratories, especially the Andalas university campus, faculty of agricultural technology, are very important supporting facilities for the continuity of education. In this laboratory, students carry out practical learning which significantly makes students understand the material better. Laboratory management activities at the Andalas campus faculty of agricultural technology are all forms of recording goods and activities that occur in the laboratory. Given the importance of laboratory functions, good laboratory management is an absolute necessity. This allows the campus to more easily get real data from the use of the laboratory by students and activities in the laboratory. This study aims to produce a web and android-based laboratory loan management information system, because compared to a paper basis, laboratory lending and management activities using web and android-based information systems are considered more efficient to implement, because with the web and android all forms of recording can be done easily. easy to do and if data is needed, all authorized parties can easily get the data. The method used in designing this campus laboratory information system uses the waterfall method where this method uses a sequential software lifeflow approach starting from the stages of analysis, design, implementation, testing and maintenance. Based on this research, it is concluded that with the existence of a web and android-based management information system, it is hoped that laboratory loan management activities at the Andalas campus, faculty of agricultural technology will be better.
Peran Guru Agama dalam Menumbuhkan Akhlak Siswa Madrasah Aliyah Muhammadiyah Palu: The Role of Religious Teachers in Fostering the Morals of Students at Madrasah Aliyah Muhammadiyah Palu Mansur; Asnidar; Afdal
Jurnal Kolaboratif Sains Vol. 4 No. 12: DESEMBER 2021
Publisher : Universitas Muhammadiyah Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31934/jom.v4i12.2340

Abstract

Penanaman nilai-nilai Islam harus dilakukan sejak dini kepada peserta didik sebagai generasi penerus bangsa yang harus mendapat perhatian serius baik dari orang tua, masyarakat maupun dari lingkungan sekolah khususnya dalam berperilaku. Oleh karena itu, guru agama harus memberikan pendidikan yang sesuai dengan tujuan Islam. Guru memegang peranan yang sangat penting dan strategis karena guru bertanggung jawab untuk mengarahkan siswa dalam hal pengetahuan dan penerapannya dalam kehidupan serta menanamkan dan memberikan contoh yang baik kepada siswa. Penelitian ini merupakan penelitian lapangan dengan jenis penelitian deskriptif kualitatif. Dalam penelitian ini pengumpulan data menggunakan observasi, wawancara dan dokumentasi. Hasil penelitian ini, ada dua bentuk pembinaan akhlak siswa di Madrasah Aliyah Muhammadiyah Palu. Pertama, pembinaan moral preventif dan kuratif. Pembinaan moral preventif dilakukan untuk mencegah kenakalan siswa. Kedua, pembinaan akhlak dapat berjalan dengan lancar karena mengoptimalkan faktor pendukung dan meminimalkan faktor penghambat, baik kendala internal maupun eksternal. Kendala internal meliputi: Kendala lingkungan fisik dan lingkungan psikologis. Sedangkan kendala eksternal antara lain: kurangnya dukungan orang tua terhadap kebijakan Madrasah. Implikasinya, dengan tantangan kemajuan teknologi dan globalisasi yang menyebabkan siswa di Madrasah Aliyah Muhammadiyah Palu mudah meniru hal-hal yang buruk, maka pembinaan akhlak perlu dilakukan secara sistematis dan terpadu. Untuk itu, setiap pemangku kepentingan harus memahami tugasnya masing-masing dan melaksanakannya dengan penuh tanggung jawab dengan dedikasi yang tinggi.