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All Journal Perfecting a Video Game with Game Metrics Media Teknika Conference SENATIK STT Adisutjipto Yogyakarta Abdimas Altruis: Jurnal Pengabdian Kepada Masyarakat
Iswanjono Iswanjono
Universitas Sanata Dharma
Aerospace Engineering Humanities Computer Science & IT Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences Other

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Sistem Presensi Perkuliahan Berbasis Radio Frequency Identification Dr. Iswanjono; Nana Natalianto
Media Teknika Vol 12, No 2 (2017)
Publisher : Sanata Dharma University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24071/mt.v12i2.1083

Abstract

In general, the present attendance system is using a paper file containing the signature column of the participating students and lecturers of the course. The problem that arises is the presence of signature due to the student's absence. Students in one sem ester must attend lectures as much as 75% of meetings held lecturers as the requirement to take the final exam of the semester. Student attendance calculations take a relatively long time for each course. For that in this research made cource attendance system based on radio frequency identification (RFID) and fingerprint. As RFID card used e -ID card. The result showed that the maximum e-KTP card reading distance of 2 cm and fingerprint ID reading with time between 1.945 to 2.227 seconds. The success rate of reading e-KTP card and fingerprint ID is 100%. The overall test of attendance system shows 100% success rate. Presence data is displayed in the GUI and stored in database and exported in .xls format.Keywords: RFID, Fingerprint, Presence, Visual Basic 6.0, MySQL, Arduino Mega 2560
PERANCANGAN SISTEM KALENDER HIJRIAH ELEKTRONIS BERBASIS MIKROKONTROLER AT89S51 Iswanjono Iswanjono; Ahlusi Sunnah; Tole Sutikno
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 4, No 2: August 2006
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v4i2.1254

Abstract

            Sistem kalender Hijriah merupakan sistem kalender umat Islam, yang pergantian harinya terjadi pada waktu Maghrib. Sistem kalender Hijriah yang beredar di Indonesia kebanyakan berupa kertas tercetak dan sulit dijumpai yang berbasis elektronis. Penelitian ini bertujuan menyediakan sistem kalender Hijriah elektronis untuk dipergunakan di masjid, musholah dan kantor-kantor berbasis islam. Sistem kalender Hijriah elektronis yang dilakukan pada penelitian ini dirancang berbasis mikrokontroler AT89S51. Informasi waktu (berupa jam, menit, detik) dan kalender Hijriah (berupa hari, tanggal, bulan, tahun) dibangkitkan oleh sistem RTC-1287 (Real Time Clock berbasis IC DS12887) yang tetap dapat bekerja walaupun sumber daya tidak terhubung, karena adanya baterai yang bekerja di dalam chip tersebut. Berdasarkan hasil pengujian didapatkan bahwa sistem kalender Hijriah berbasis mP AT89S51 yang dirancang dapat digunakan sebagai sistem kalender Hijriah elektronis dengan keakuratan yang tinggi.
An Algorithm for Predicting the Speed of Traffic Light Violators Iswanjono Iswanjono; Bagio Budiardjo; Kalamullah Ramli
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 9, No 1: April 2011
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v9i1.645

Abstract

The tracking of vehicles using RFID was developed consider three major problems, i.e. traffic signal timing, congestion on road and theft of vehicles. This paper describes an algorithm for predicting the speed of traffic light violators. The novel algorithm is implemented in the form of a simulation program. The traffic light system is equipped RFID reader as the main tool for identifying the vehicle’s RFID tags. In the simulation, the vehicle’s ID is generated using a random number generation. The distribution of the vehicle’s numbers is uniform and the expected number of vehicles violated the traffic light is not more than 3 % of the total number generated. The timing accuracy for speed traffic lights violator is 100 milli seconds. From the simulation conducted, the algorithm has performed as expected. It is able to predict the speed of traffic light violators ranging from 5 km/h up to 80 km/h in real-time.
Feature Extraction of Musical Instrument Tones using FFT and Segment Averaging Linggo Sumarno; I. Iswanjono
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 15, No 3: September 2017
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v15i3.3381

Abstract

A feature extraction for musical instrument tones that based on a transform domain approach was proposed in this paper. The aim of the proposed feature extraction was to get the lower feature extraction coefficients. In general, the proposed feature extraction was carried out as follow. Firstly, the input signal was transformed using FFT (Fast Fourier Transform). Secondly, the left half of the transformed signal was divided into a number of segments. Finally, the averaging results of that segments, was the feature extraction of the input signal. Based on the test results, the proposed feature extraction was highly efficient for the tones, which have many significant local peaks in the Fourier transform domain, because it only required at least four feature extraction coefficients, in order to represent every tone.
ALAT DISPENSER HAND SANITIZER OTOMATIS UNTUK MASYARAKAT Linggo Sumarno; Wiwien Widyastuti; A. Bayu Primawan; Martanto Martanto; Iswanjono Iswanjono; Damar Widjaja; Th. Prima Ari Setiyani; B. Djoko Untoro Suwarno; Tjendro Tjendro; Petrus Setyo Prabowo
ABDIMAS ALTRUIS: Jurnal Pengabdian Kepada Masyarakat Vol 4, No 1 (2021): April 2021
Publisher : Universitas Sanata Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (610.533 KB) | DOI: 10.24071/aa.v4i1.3336

Abstract

The habit of cleaning hands is one of the new habits during the current COVID-19 pandemic. One way to clean hands is with a hand sanitizer. The automatic hand sanitizer dispenser can be used to clean hands, without touching a button or any part of the appliance. Community service in this paper is carried out by making a number of automatic hand sanitizer dispensers, and distributing them in a number of places, around Campus III of Sanata Dharma University, Paingan, Maguwoharjo, Yogyakarta. A number of complaints emerged from the person in charge of the distribution site for the appliance. The most common complaint is that the appliance does not function as it should. This complaint is caused by a problem with the proximity sensor used. This sensor is too affected by light intensity. To overcome this, it is necessary to explore other types of sensors that are better than proximity sensors, which are less affected by light intensity.
SISTEM POMPA AIR TENAGA SURYA: PEMANFAATAN ENERGI SURYA UNTUK PENYEDIAAN AIR BERSIH DUSUN KARANG, GUNUNG KIDUL A.Bayu Primawan; Iswanjono Iswanjono
ABDIMAS ALTRUIS: Jurnal Pengabdian Kepada Masyarakat Vol 2, No 1 (2019): April 2019
Publisher : Universitas Sanata Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (374.22 KB) | DOI: 10.24071/aa.v2i1.2127

Abstract

PENINGKATAN EFISIENSI PROSES PENGERINGAN KAYU DAN BLOK PUPUK MENGGUNAKAN PENGERING BERBASIS SIKLUS KOMPRESI UAP Petrus Kanisius Purwadi; FA Rusdi Sambada; Iswanjono Iswanjono; Budi Sugiharto; Yosef Agung Cahyanta; Wibowo Kusbandono
ABDIMAS ALTRUIS: Jurnal Pengabdian Kepada Masyarakat Vol 5, No 1 (2022): April 2022
Publisher : Universitas Sanata Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (515.73 KB) | DOI: 10.24071/aa.v5i1.4011

Abstract

The wood-furniture drying process in the industry using wood fuel is deemed inefficient, wasteful, takes a long time, is unsafe, impractical, and not environmentally friendly. Furthermore, the process of drying fertilizer blocks with the sun, apart from requiring a large area of land, also cannot be carried out in the rainy season. This service is carried out in two industrial partners, namely CV Nuansa Kayu Bekas in Sragen and PT Wira Cahya Pratama in Klaten. This service aims to increase understanding of an effective drying machine for the drying process of wood furniture and block-fertilizer in the industry by using a vapour compression cycle. In addition, to increase productivity and profits in the industry. The training venues are conducted in the industries of the two partners. Activities in this service include training on drying machines and assistance in the manufacture, operation and maintenance of effective dryers, especially for the wood-furniture and fertilizer-block industries. The implementation of the service has been going well and smoothly. The outputs produced are activity videos, publications in Suara Merdeka newspaper, Jogja Daily and the Sanata Dharma University website, service articles published in service journals, and Partner satisfaction surveys.
Load Control for Energy Optimalization in Unstabil Electric Power Plant Iswanjono Iswanjono
SENATIK STT Adisutjipto Vol 5 (2019): Peran Teknologi untuk Revitalisasi Bandara dan Transportasi Udara [ISBN 978-602-52742-
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/senatik.v5i0.312

Abstract

The power generated by a power plant driven by windmills and waterwheels and solar power is unstable,. each depends on wind speed, water flow, and solar radiation, repeatively. This results in the acquisition of energy not being optimal if the load is not adjusted to the capability of the generating power. In this study a load control automation system has been created that can adjust to the ability of the resource so that optimal energy is obtained by the hysteresis method. When the power goes up and down the load adjusts hysterically, so that optimal energy is obtained.
Engineering Setting on Traffic Lights Based on Number of Vehicles with Fuzzy Logic Algorithm Iswanjono Iswanjono; Regina Chelinia Erianda Putri; Ignasius Tegar Adiyanto
SENATIK STT Adisutjipto Vol 4 (2018): Transformasi Teknologi untuk Mendukung Ketahanan Nasional [ ISBN 978-602-52742-0-6 ]
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/senatik.v4i0.209

Abstract

At crossroads there is often a queue of vehicles that are not evenly distributed in each branch, but the length of the green light remains (not adaptive). So prototype was made to regulate the green light based on the number of vehicles with the help of the Fuzzy Logic Algorithm. Beginning with the next fuzzification stage with the help of the rule base to the defuzzification stage which produces a long green light. The results of the study, Fuzzy Logic algorithm can set the length of green light for each branch based on the number of vehicles. If a branch has more vehicles than other branches, the length of time for the green light on the branch is longer than the other branches. The percentage of error testing with theoretical calculations is 0.05% and the percentage of success is 99.95%.
Co-Authors Ahlusi Sunnah Bagio Budiardjo Budi Sugiharto Damar Widjaja Djoko Untoro Suwarno Ignasius Tegar Adiyanto Kalamullah Ramli Linggo Sumarno Martanto Martanto Nana Natalianto Petrus Kanisius Purwadi Petrus Setyo Prabowo Primawan, A.Bayu Regina Chelinia Erianda Putri Rusdi Sambada Theresia Prima Ari Setiyani Tjendro Tole Sutikno Wibowo Kusbandono Wiwien Widyastuti Yosef Agung Cahyanta