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INDONESIA
Media Teknika
Published by Universitas Sanata Dharma
ISSN : -     EISSN : -     DOI : -
Core Subject : Engineering,
Engineering
Arjuna Subject : -
Articles 14 Documents
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Search results for , issue "Vol 12, No 2 (2017)" : 14 Documents clear
Karakteristik Briket Arang Sekam Padi dan Arang Kulit Bawang Putih Mohammad Nurhilal; Roy Aries Permana Tarigan
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.v12i2.1081

Abstract

Indonesia is endowed with abundant natural wealth capable of being transformed into an energy source. However, until now the utilization of natural resources can not be optimally processed. One alternative solution to make the fuel as a substitute for LPG is to fuel the briquettes. The general purpose of this research is the manufacture of briquettes from waste materials such as rice husk and garlic skin. While the specific purpose of this research is to know the characteristic of proximate briquettes such as: water content, ash content, fixed carbon, volatile matter, and calorie briquettes, variations of glue composition glue 200, 250, 300 gram, kanji starch composition 20, 30, and 40 gram and paper pulp 50 w / w and 100 w / w of total weight of adhesive 20 gram, and jelantah cooking oil. Methods in this research are experimental approaches such as, making briquettes, and testing the characteristics of briquettes. The results of research on water content, ash content, fixed carbon, volatile matter and calorific briquettes of rice husk huskers were 33,493%, 39,966%, 29,058%, 30,923% and 3873,500 kal / gram respectively. While the characteristics of garlic skin briquettes produced the highest price respectively 35.986%, 9.650%, 42.373%, 34.479%, and 4783.654 cal / gram.Keywords: Characteristics of briquettes, rice husk, garlic skin.
Aplikasi Web Service Perbankan untuk Pembayaran Formulir Pendaftaran Mahasiswa Baru Puspaningtyas Sanjoyo Adi
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.v12i2.1087

Abstract

The new student registration process begins with the process of filling out the registration form where to get it, the prospective student pays to get the form. Sanata Dharma University cooperates with the bank to develop an application to pay registration form with web service technology. The advantage of this technology is electronic service and can work 24 hours. Web service technology is a service that allows communication between machines performed through a computer network with HTTP protocol web server. The web service application was developed and implemented by Sanata Dharma University and CIMB Niaga bank in October 2017. From the observation of January 2018 compared to January 2017, the January 2018 transaction increased by about 12% compared to January 2017. The proportion of web service transactions is around 30% of total transactions where 80% of them are conducted outside office hours. This data indicates that the knowledge of electronics services of prospective students and their parents is good enough.Keywords: web service, registration form, new students
Pelacak Matahari Dua Sumbu Menggunakan LDR untuk Meningkatkan Absorbsi Matahari Elang Parikesit; Doddy Purwadianto; FA. Rusdi Sambada
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.v12i2.1082

Abstract

The position of the sun in the sky always changes periodically. A lot of research has been doneto follow the sun's motion using a solar tracking system to increase the amount of solar energy that can be absorbed. The solar tracking system can be grouped into passive and active system. Active sun tracker system uses motor drive in following the motion of the sun. The current active tracking system is using one or two rotary axis. Active two-axis solar tracking system provides greater efficiency and effectiveness than one-axis solar tracking system. This study aims to increase the absorbable sun energy with a simpletwo-axis solar tracking system. This research has been done by experimental method by making a model of two-axis sun tracker and its field data retrieval. The main parts of the model in this study are (1) LDR sensor, (2) microcontroller and (3) motor drive. Initial data of field test results shows a maximum increase (269%) in absorbable solar energy on a model using a sun tracker than models that d o not use a solar tracking systemKeywords: tracker, sun, two-axis rotate, simple
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

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