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All Journal BERKALA FISIKA JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Nasional Pendidikan Teknik Informatika (JANAPATI) IJID (International Journal on Informatics for Development) Jurnal Fisika : Fisika Sains dan Aplikasinya Jurnal Abdi Insani Indonesian Journal of Electrical Engineering and Computer Science Jurnal Inovasi Pendidikan dan Sains Journal of Innovation in Educational and Cultural Research Jurnal Instrumentasi DEDIKASI: Community Service Reports Journal of Engineering and Applied Technology Jurnal Nasional Teknik Elektro dan Teknologi Informasi Jurnal Materi dan Pembelajaran Fisika Jurnal Pengabdian Masyarakat Bhinneka Jurnal Masyarakat Madani Indonesia Jurnal Pengabdian Masyarakat Bangsa Jurnal Rekayasa elektrika
Dewanto Harjunowibowo
Department Of Physics Education, Faculty Of Teacher Training And Education, Universitas Sebelas Maret, Surakarta 57126, Indonesia
Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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A Counterfeit Paper Currency Recognition System Using LVQ based on UV Light Harjunowibowo, Dewanto; Hartati, Sri; Budianto, Aris
IJID (International Journal on Informatics for Development) Vol 1, No 2 (2012): IJID December
Publisher : Universitas Islam Negeri Sunan Kalijaga Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (870.108 KB) | DOI: 10.14421/ijid.2012.01202

Abstract

This research is aimed to test a paper currency counterfeit detection system based on Linear Vector Quantization (LVQ) Neural Network. The input image of the system is the dancer object image of paper currency Rp. 50.000,- fluorescent by ultraviolet light. The image of paper currency data was taken from conventional banks. The LVQ method is used to recognize whether the paper currency being tested is counterfeit or not. The coding was carried out using visual programming language. The feature size of the dancer tested object is 114x90 px and the RGBHSI was extracted as the input for LVQ. The experimental results show that the system has an accuracy 100% of detecting 20 real test case data, and 96% of detecting 22 simulated test case data. The simulated case data was generated by varying the brightness of the image data. The real test case data contains of 10 counterfeit paper currency and 10 original paper currency. The simulated case data contains of 11 original paper currency and 11 counterfeit paper currency. The best setting for the system is Learning Rate = 0.01 and MaxEpoh = 10.
Model Panel Surya Cerdas Dengan Sensor Pelacak Cahaya Matahari Otomatis Berbasis Mikrokontroler Harjunowibowo, Dewanto
BERKALA FISIKA Vol 13, No 2 (2010): Berkala Fisika, Edisi Khusus
Publisher : BERKALA FISIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (211.544 KB)

Abstract

This research aims to create a model of intelligent solar panels are able to follow the movement direction of the sun as an energy source based on microcontroller AVR ATMEGA. This study uses ATMEGA AVR microcontroller 16bit with injection of fuzzy logic programs. The system also created using 4 (four) sensors LDR and 5 (five) photodiode sensor. Integration of fuzzy logic, AVR ATMEGA and sensors capable of providing optimal results into a dynamic model of the solar panels that automatically and can be applied on a large scale. The results of this study is a prototype solar panel that is able to follow the movement direction of the sun based on microcontroller AVR ATMEGA 16. The solar panels model is capable of putting solar panel surface perpendicular to the direction of sunlight intensity can be detected along the sensor.   Keywords: smart panel, microcontroller, fuzzy logic, sensor
KAJIAN PUSTAKA KOMPOSIT LIMBAH PLASTIK SEBAGAI PAVING BLOK PENGHASIL ENERGI BERKELANJUTAN TERINTEGRASI PIEZOELEKTRIK DAN PHOTOVOLTAIC (VIZO) Farah Yuki Prasetyawati; M. Maulana Yusuf; Alvin Ichwannur Ridho; Afifah Harwanti; Yulianto Agung Rezeki; Sarwanto Sarwanto; Dewanto Harjunowibowo; Sri Budiawanti; Suharno Suharno; Yesiana Arimurti; Dwi Teguh Rahardjo
Jurnal Fisika : Fisika Sains dan Aplikasinya Vol 7 No 1 (2022): Jurnal Fisika : Fisika Sains dan Aplikasinya
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/fisa.v7i1.5478

Abstract

This work aims to improve pedestrian functions, improve the welfare of waste banks and scavengers, and fulfil electricity needs for the surrounding community towards Society 5.0. The method of writing is done with secondary data through the latest literature study. The literature study focused on the development of technology for processing plastic waste, photovoltaic (PV), and piezoelectric (PZT) and their use in road construction. The results of the discussion show the potential of plastic waste as a composite material for paving. Similarly, PV and PZT can be integrated together as a producer of renewable electrical energy. With this innovation, VIZO is expected to be able to reduce plastic waste and provide welfare for the community, scavengers, waste banks, and help local government energy-saving programs.
The Development of Mathematics Comic Containing Pancasila Values to Develop Character of Elementary School Students: A Case Study of Indonesia Farid Ahmadi; Rochmad Rochmad; Farida Puput Lestari; Dewanto Harjunowibowo
Journal of Innovation in Educational and Cultural Research Vol 2, No 1 (2021)
Publisher : Yayasan Keluarga Guru Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (818.068 KB) | DOI: 10.46843/jiecr.v2i1.20

Abstract

The present research focuses on developing mathematics comic as a teaching material that integrates the moral value of discipline and hard work for elementary school students. This character-building comic development method was made based on the ADDIE model, which includes analysis, design, development, implementation, and evaluation. Twenty-nine grade four students were recruited as samples, consisting of a small group of students in the limited trial group and a big group of students in the field trial group. The data collection technique used was a questionnaire. The development of mathematics comic teaching material containing discipline and hard work character-building has successfully resulted in a comic that met the feasibility standards. The field trial showed a significant increase of 0.76 and 0.74 in students’ character development in terms of discipline and hard work, respectively. The results indicate the effectiveness of mathematics comics in instilling Pancasila moral values in elementary mathematics teaching in Indonesia.
Simple Method for Non Contact Thickness Gauge using Ultrasonic Sensor and Android Smartphone Anif Jamaluddin; Fita Listiana; Dwi Teguh Rahardjo; Lita Rahmasari; Dewanto Harjunowibowo
Indonesian Journal of Electrical Engineering and Computer Science Vol 15, No 1: July 2015
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The aim of this research is to develop simple method for non contact thickness gauge using ultrasonic sensor and android smartphone. This system is constructed using ultrasonic sensor HY-SRF05, microcontroller ATMEGA328, bluetooth module and android smartphone. Ultrasonic sensor transmits ultrasonic pulses in the form of waves and recieves back the pulses after the waves are reflected by an object. The time duration of ultrasonic between  transmition and reception is calculated as distance between sensor and sample. The method of for thickness measurement adhere sample on holder infront of ultrasonic sensor. The Thickness measurement of sample is calculated base on distance beetwen sensor to holder (fixed barrier)  and sample to sensor. The zero position of measurement is distance of sensor to holder. The data of thickness is sent via bluetooth and received by the Android application. Android Application uses to  display measurement is designed base on MIT App Inventor for Android (AIA) platform. The measurement results show a fairly high degree of accuracy is 99.978%. DOI: http://dx.doi.org/10.11591/telkomnika.v15i1.7187
Penerapan Teknologi Homogenizer pada Industri Jamu di Jawa Tengah Dewanto Harjunowibowo; Yulianto Agung Rezeki; Yudi Rinanto; Amanda Alya Kamilla; Aina Mardhiyah; Agastya Surya Visinanda; Fajar Prasetya; Brilian Swastika; Carrollus Axellino Rettob
Jurnal Pengabdian Masyarakat Bangsa Vol. 1 No. 8 (2023): Oktober
Publisher : Amirul Bangun Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59837/jpmba.v1i8.413

Abstract

Jamu merupakan minuman tradisional yang memiliki banyak khasiat dengan sedikit efek samping negatif pada para konsumennya. Kecepatan produksi dan kualitas produk sangat ditentukan oleh ketepatan formula dan proses yang dilakukan. Kegiatan pengabdian ini bertujuan untuk meningkatkan jumlah produksi dan kualitasnya melalui peningkatan efisiensi kerja dan keseragaman proses. Metode Focus Discussion Group antara tim pengabdi dengan  mitra dilakukan untuk mendapatkan informasi yang lengkap dan ketepatan teknologi yang akan diterapkan. Perancangan teknologi dan kapasitas dilakukan bersama mitra agar diperoleh solusi teknologi yang efektif dan memudahkan mitra dalam melakukan perawatan. Sebagai langkah akhir adalah pelatihan dan penerapan teknologi pada mitra agar terjamin ketepatan prosedur penggunaan alat sehingga tercapai tujuan utama yakni peningkatan kapasitas produksi, kecepatan dan kualitasnya. Evaluasi dilakukan selama dan diakhir kegiatan supaya kegiatan terus berjalan sesuai dengan koridor keamanan kerja dan higienis proses. Hasil kegiatan menunjukkan ketercapaian tujuan kegiatan yakni kemudahan proses, keseragaman larutan formula dan kecepatan produksi. Pengubahan teknik pengadukan manual oleh tenaga manusia menjadi otomatis dengan mesin menjadikan homogenisasi produk lebih terjamin serta pemangkasan waktu produksi dari 3x7 jam menjadi 1x7 jam. Akhirnya kapasitas produksi jamu dapat ditingkatkan hingga 3 (tiga) kali lipat.
Assessing the “Gotong-royong” Spirit in the Merdeka Curriculum: A Case Study of Student’s Engagement in Renewable Energy Project-Based Learning (PjBL) Iin Nashihah; Elvin Yusliana E; Dewanto Harjunowibowo
Jurnal Penelitian Pendidikan IPA Vol. 9 No. SpecialIssue (2023): UNRAM journals and research based on science education, science appl
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9iSpecialIssue.4072

Abstract

This research is conducted to find out the Gotong Royong attitude toward the students in Merdeka Curriculum. The method of this research is quantitative method. The purpose of this research is to describe the attitude of Gotong Royong which was obtained by the students during learning activity. The research was conducted in February 2023. The place of this research was SMA Al Azhar Syifa Budi Solo. The population was X I IPA 1. The school was selected based on the driving schools with supporting teachers as organizer teachers in Merdeka Curriculum. There are 3 steps in this research such as preparation, design, and implementation. There the observation of 4 aspects during the learning process. These aspects are related to the development of the Gotong Royong dimension from the Pancasila Student Profile in the Merdeka Curriculum. The result of Gotong Royong's attitude obtains a very good category. This category is observed in the students during the learning process with the highest score being 4 and the lowest score is 1. Gotong Royong's attitude is based on the good category (3 aspects) and the good category (1 aspect). Although Gotong Royong's attitude is based on the highest presentation to all of the scores in the collaboration dimension. Score 1 is 42%, score 2 is 43%, score 3 is 85%, and score 4 is 38%.
Pemberdayaan Masyarakat Melalui Pendidikan Studi Kasus Sinau Kawruh Bareng Di Desa Ngaru-Aru Kurniawati, Ridha Dwi; Devinta, Yuslana; Gibral, Nisa Khuriya; Khadri, Tabah Muhamad; Tyas, Aster Cahyaning; Ardiansyah, Farhan Ahmad; Yunianto, Muchsin Budi; Dharmawan, Muh Adhi; Pratiwi, Ratih Muliastry; Widiarti, Endang Retno; Harjunowibowo, Dewanto
Jurnal Pengabdian Masyarakat Bangsa Vol. 1 No. 9 (2023): November
Publisher : Amirul Bangun Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59837/jpmba.v1i9.414

Abstract

Pemberdayaan masyarakat melalui pendidikan memiliki peran kunci dalam meningkatkan kualitas hidup di komunitas pedesaan. Di Desa Ngaru-Aru, minat belajar siswa di sekolah menjadi isu utama yang perlu ditangani. Tantangan ini, yang mencakup kesulitan belajar, kurangnya dukungan orang tua, dan lingkungan belajar yang tidak kondusif, memerlukan tindakan konkret. Oleh karena itu, tim Mahasiswa KKN Desa Ngaru-Aru meluncurkan program "Sinau Kawruh Bareng" atau yang dikenal sebagai "Srawung". Program ini bertujuan memberikan bimbingan belajar gratis kepada siswa dan, pada saat yang sama, meningkatkan minat belajar mereka. Dalam pelaksanaannya, program ini berfokus pada disiplin, konsentrasi belajar, dan interaksi sosial di antara siswa. Hasil dari program ini menunjukkan peningkatan yang signifikan dalam minat belajar siswa dan pengembangan keterampilan mereka. Selain itu, "Sinau Kawruh Bareng" juga berhasil mempromosikan pentingnya pendidikan di luar lingkungan sekolah. Kegiatan ini berpotensi untuk memperkuat pemberdayaan masyarakat, terutama dalam hal pendidikan anak-anak. Kegiatan "Srawung" telah terbukti berhasil meningkatkan minat belajar siswa di Desa Ngaru-Aru, dan dapat dianggap sebagai langkah efektif dalam mengatasi masalah kesulitan belajar. Program ini menawarkan pandangan positif tentang peran pendidikan dalam mendorong kemajuan sosial dan kualitas hidup di komunitas pedesaan.
Pelatihan Dasar-Dasar Otomatisasi Berbasis Arduino Menyambut Revolusi Industri 4.0 Pada Siswa MA Al Madinah Boyolali Rezeki, Yulianto Agung; Harjunowibowo, Dewanto; Budiawanti, Sri; Jamaluddin, Anif; Rahmasari, Lita; Rahardjo, Dwi Teguh; Nugroho, Lilik Andre; Syamsuddin, Frendi Ihwan; Prasetyawati, Farah Yuki; Arifa, Aulia; Ulwan, Rozin Fata; Nugroho, Panji Setyo
Jurnal Pengabdian Masyarakat Bangsa Vol. 1 No. 9 (2023): November
Publisher : Amirul Bangun Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59837/jpmba.v1i9.430

Abstract

Pada era Revolusi Industri 4.0 berkembang internet of things dengan sangat cepat yang menandakan dunia industri telah mengalami kemajuan. Kemajuan ini adalah penggabungan teknologi otomatisasi dan teknology cyber. Kemajuan teknologi telah menghasilkan penemuan-penemuan penting, seperti otomatisasi, analisis data, simulasi, integrasi sistem, penggunaan robot, dan teknologi cloud untuk penyimpanan data. Hal ini menyebabkan terhubungnya semua sektor industri melalui website yang terintegrasi secara otomatis. Kemajuan teknologi telah mengubah kehidupan manusia, termasuk gaya hidup berkelanjutan. Sehingga masyarakat perlu menyesuaikan perubahan sejalan dengan transformasi digital. Digitalisasi memunculkan penciptaan robot-robot yang dapat membantu pihak industri. Namun adanya digitalisasi juga menimbulkan polemik di masyarakat, yaitu anggapan Revolusi Industri 4.0 yang menghadirkan robot sebagai pengganti peran manusia. Polemik ini berdasar dari ketidaktahuan masyarakat mengenai sistem otomatisasi dari robot. Maka menjadi peluang sekaligus tantangan bagi pengabdi untuk memberikan pengetahuan mengenai dasar-dasar sistem otomatisasi kepada peserta didik tingkat sekolah menengah atas.
Pembiakan Sirih Hitam pada Petani Plasma di Sukoharjo Harjunowibowo, Dewanto; Rinanto, Yudi; Ariyanto, Joko; Prasetya, Fajar; Swastika, Brilian
Jurnal Pengabdian Masyarakat Bangsa Vol. 2 No. 1 (2024): Maret
Publisher : Amirul Bangun Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59837/jpmba.v2i1.789

Abstract

Sirih hitam (Piper Betle Var Nigra) merupakan tumbuhan yang memiliki banyak manfaat untuk kesehatan. Namun, pertumbuhan daun sirih hitam tergolong lambat dibandingkan dengan tanaman serupa di alam bebas, sehingga harga pasarannya cukup tinggi. Metode pembiakan dengan stek telah dilakukan, namun kendala utamanya adalah sulitnya mengontrol kondisi lingkungan agar sesuai dengan kebutuhan tanaman. Kegiatan  ini bertujuan untuk mengenalkan pertanian modern dalam rumah kaca dengan sistem kontrol kondisi temperatur, kelembaban, dan intensitas cahaya secara otomatis. Hal ini diharapkan dapat mempercepat pertumbuhan sirih hitam dan menjaga kualitas zat aktifnya sebagai obat. Kegiatan dilakukan dengan membangun greenhouse semi permanen di Desa Triyagan, Sukoharjo, serta membuat 3 sistem kontrol untuk mengontrol intensitas cahaya buatan, suhu dan kelembaban ruangan, serta kelembaban tanah. Sistem irigasi yang digunakan adalah sistem spray karena jenis akar sirih merupakan akar merambat di permukaan tanah. Kegiatan ini menunjukkan bahwa dengan sistem budidaya modern dalam greenhouse dan pelatihan pembiakan sirih hitam dengan sistem stek terarah dan cangkok, mempercepat pertumbuhan sirih hitam dan menjaga kandungan zat aktifnya. Selain itu, pelatihan pemasaran bibit ke marketplace mampu menambah pendapatan bagi mitra. Selain itu, kegiatan ini diharapkan dapat memberikan kontribusi dalam pengembangan budidaya sirih hitam yang efisien dan berkelanjutan, serta memperluas wawasan masyarakat tentang pertanian modern.
Co-Authors Afifah Harwanti Agastya Surya Visinanda Aina Mardhiyah Alfiani, Athifah Novi Alvin Ichwannur Ridho Amanda Alya Kamilla Amaratirta, Jasmine Cupid Amaratirta, Jasmine Cupid Amri, Saehful Andini Desi Sawitri Anif Jamaluddin Ardiansyah, Farhan Ahmad Arifa, Aulia Aris Budianto, Aris Ariyanto, Dewa Pascal Ariyanto, Dewa Pascal Ashadi Azizah Nur Safitri Azizah, Salsabila Nur Brilian Swastika Cahyani, Riana Natifa Eka Carrollus Axellino Rettob Cucuk Wawan Budiyanto Danar Susilo Wijayanto Della Astri Widayani Desy Erma Putri, Desy Erma Devinta, Yuslana Dewa Pascal Ariyanto Dewanto Kamas Utomo Dewi Ratna Nurhayati Dewi Ratna Nurhayati Dharmawan, Muh Adhi Dwi Teguh Rahardjo Dyah Fitriana Masithoh Dyah P Efi Nikmatu Solikhah Elvin Yusliana E Fajar Prasetya Farah Yuki Prasetyawati Farid Ahmadi Farida Puput Lestari Farisa Ramadhani Rosyidi Febri, Ade Fita Listiana Fitria Haryani, Fairusy Frita Dwi Wijayanti Gibral, Nisa Khuriya Haq, Mufti Muammarul Hernawan, Aswin Nugrahandi Hikamiah, Luluk Arifatul Hikamiah, Luluk Arifatul Husnawati, Fina I Gusti Bagus Wiksuana Iin Nashihah Indah Widiastuti Istiqomah, Ainun Jasmine Cupid Amaratirta Joko Ariyanto July Trianita Widya Rahayu Kamaruddin, Maqbul Kenny Anindia Ratopo, Kenny Khadri, Tabah Muhamad Kuncoro Diharjo Kurniawati, Ridha Dwi Laeli Nurajijah Latifah N. Q Lestari, Dian Permata Lia Umi Khasanah Lina Wahyuningrum Lita Rahmasari Lita Rahmasari Luluk Arifatul Hikamiah M. Maulana Yusuf Nonoh Siti Aminah Nugroho, Lilik Andre Nugroho, Panji Setyo Nugroho, Panji Setyo Nurul Fitrianingrum Nyoman Meta Rosanti Panji Setyo Nugroho Pawestri, Wari Prasetya, Fajar Prasetyawati, Farah Yuki Pratiwi, Ratih Muliastry Pratiwi, Rinta Dian Pujayanto Pujayanto Puspita Septim Wulandari, Puspita Septim Putri, Eva Rahayu Riyana Indah Setiyani, Riyana Indah Rochmad Rochmad Rosihan Ari Yuana, Rosihan Ari Rosihan Ariyuana, Rosihan Sajidan Sarwanto Sarwanto Sarwanto Sarwanto Sarwanto Sarwanto Sawitri, Andini Desi Shinta Melani Permatasari Siti Supeni Siti Supeni Solikhah, Efi Nikmatu Sri Budiawanti Sri Budiawanti Sri Hartati Suharno Suharno Suharno Suharno Suharno Suharno Sukamto, Ika Sumiyarsi Sukarmin Supurwoko Sutadi Waskito Swastika, Brilian Syafiah, Revalina Zulfalhutfi Syamsuddin, Frendi Ihwan Thrustho Raharjo, Thrustho Tyas, Aster Cahyaning Ulwan, Rozin Fata Widayani, Della Astri Widayani, Della Astri Widha Sunarno Widiarti, Endang Retno Y. Radiyono Yesiana Arimurti Yudi Rinanto Yudi Rinanto Yuli Yanti Yulianto Agung Rezeki Yulianto Agung Rezeki Yunianto, Muchsin Budi