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All Journal Seminar Nasional Aplikasi Teknologi Informasi (SNATI) Conference SENATIK STT Adisutjipto Yogyakarta Journal of Science and Science Education Prosiding Seminar Nasional Sains Teknologi dan Inovasi Indonesia (Senastindo) Abdimas Altruis: Jurnal Pengabdian Kepada Masyarakat Prosiding Konferensi Nasional Penelitian Matematika dan Pembelajarannya SENAPAS Proceeding of International Conference on Information Science and Technology Innovation (ICoSTEC) Proceeding International Conference on Mathematics and Learning Research Widya Teknik
Djoko Untoro Suwarno
Universitas Sanata Dharma
Aerospace Engineering Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Mathematics Mechanical Engineering Physics Social Sciences Other

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PELATIHAN GEOGEBRA UNTUK GURU-GURU SMA DI KALIMANTAN BARAT Bernadeta Wuri Harini; Djoko Untoro Suwarno; Martanto Martanto; Wiwien Widyastuti; Theresia Prima Ari Setiyani; Lusia Krismiyati Budiasih
ABDIMAS ALTRUIS: Jurnal Pengabdian Kepada Masyarakat Vol 5, No 2 (2022): Oktober 2022
Publisher : Universitas Sanata Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24071/aa.v5i2.4589

Abstract

Mathematics and Physics are subjects that are not only difficult for students but also difficult for teachers. To make it easier to understand the material, Geogebra software is used. In this community service, Geogebra training was provided for high school teachers who are Mathematics and Physics teachers in West Kalimantan. The training was conducted online involving 10 lecturers and 5 assistants. The training consisted of 4 sessions carried out over 2 days which was attended by 31 teachers of Mathematics and Physics. The training is divided into 2 classes to be more effective. From the training results, there was an increase in the ability to use Geogebra by 38.05%. The average level of participant satisfaction with the implementation of the study is 4.15 on (a scale of 5)
Simulation on the effects of the Arduino PID controller parameters using the WOKWI online simulator Djoko Untoro Suwarno
Proceeding of International Conference on Information Science and Technology Innovation (ICoSTEC) Vol. 1 No. 1 (2022): Proceeding of International Conference on Information Science and Technology In
Publisher : Universitas Respati Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35842/icostec.v1i1.22

Abstract

PID controllers are known in the industrial world as reliable controllers and are studied in universities. The explanation of the ideal PID mathematically often makes it difficult for students to understand the computational process and the implementation that occurs. Often there is difficulty in selecting the correct controller parameters, for example, the Kp, Ki, and Kd parameters. In this study, PID parameters were selected in the form of Kp, Ti, and Td and observed controller output. The Ti parameter as the time integral is easier to understand than the Ki parameter as the gain integral. The Arduino simulator used is wokwi which is an online Arduino simulator. The PID library used is the Arduino Brett Beauregard PID. The results obtained are the effect of changes in the parameters of Kp, Ti, and Td on the controller output. For larger Kp, the controller output is proportional to the amount of input. The larger the Ti, the slower the system output, while the effect of Td is used when the input changes frequently
Kompor Minyak Jelantah: Kinerja dan Keberlanjutan dalam Pemanasan Air Rumah Tangga Djoko Untoro Suwarno; Wuri Harini; Wiwien Widyastuti; Haris Sriwindono; Lukas Puwoto
Seminar Nasional Penelitian dan Abdimas Vol 2 No 1 (2024): Juni
Publisher : Lembaga Penelitian dan Pengabdian pada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/senapas.v2i1.9297

Abstract

Abstract — This study evaluates the efficiency and sustainability of using a waste cooking oil stove for heating water in a household setting. In the tests conducted, the waste cooking oil stove successfully heated 500 ml of water from 30°C to 100°C in 9 minutes, with a heating power of approximately 270 watts. The consumption of waste cooking oil as fuel was recorded at 100 ml per hour of operation, demonstrating the potential of waste cooking oil as an economical and eco-friendly alternative fuel. However, the use of tissue paper as an initial heating aid produced residue that required routine cleaning of the stove's burner. It is recommended to develop a more efficient and cleaner initial heating mechanism, such as integrating an electric heating element or using ignition materials that do not leave residue. Additionally, designing an easily cleanable burner and optimizing airflow are suggested to improve user convenience and efficiency. With the implementation of these recommendations, the waste cooking oil stove can become a more practical and environmentally friendly fuel solution for households.   Abstrak—Penelitian ini mengevaluasi efisiensi dan keberlanjutan penggunaan kompor minyak jelantah untuk pemanasan air dalam skala rumah tangga. Dalam pengujian, kompor minyak jelantah berhasil memanaskan 500 ml air dari suhu 30°C hingga 100°C dalam waktu 9 menit, dengan daya pemanasan sekitar 270 watt. Konsumsi minyak jelantah sebagai bahan bakar tercatat sebesar 100 ml per jam operasi, menunjukkan potensi penggunaan minyak jelantah sebagai alternatif bahan bakar yang hemat dan ramah lingkungan. Namun, penggunaan tisu sebagai pemanas awal menimbulkan residu yang memerlukan pembersihan rutin pada tungku kompor. Disarankan pengembangan mekanisme pemanasan awal yang lebih bersih dan efisien, seperti integrasi elemen pemanas listrik atau penggunaan bahan pemantik yang tidak meninggalkan residu. Desain tungku yang mudah dibersihkan dan optimasi aliran udara juga diusulkan untuk meningkatkan kenyamanan dan efisiensi penggunaan. Dengan penerapan saran-saran ini, diharapkan kompor minyak jelantah dapat menjadi solusi bahan bakar yang lebih praktis dan ramah lingkungan bagi masyarakat.
Controlling and Detection of Public Street Light Using Wireless Connection Herpurnomo, Adnantio; Suwarno, Djoko Untoro
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.v4i0.247

Abstract

The public street light used to create good conditions for road users. The public street lamps must continue to be maintained to keep working properly. Currently, maintenance of street lighting is still done manually. In this research, a system was designed and implemented to detect lamp damage and control lights remotely using the WeMos D1 microcontroller. This system uses two LDRs as sensors and relays to activate the lights. The first LDR is used to detect ambient light. The second LDR is used to detect lamp conditions. Light control and detection use internet wireless networks and WeMoS D1 as a web server. The system can turn on and turn off the lights automatically, detect the condition of the lamps, and show the intensity of the light environment. Distance to control via a wifi hotspot using a computer is 72m and 20m for a mobile phone.
Visualization of Rectified Sine Waves and Triggering Angles on Thyristor Using Geogebra Djoko Untoro Suwarno
Proceeding International Conference on Mathematics and Learning Research 2021: Proceeding International Conference on Mathematics and Learning Research
Publisher : Universitas Muhammadiyah Surakarta

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

Abstract

GeoGebra is a tool that is widely used among academics to solve mathematical problems. GeoGebra can be visually generated in the form of graphs and computational results easily and quickly. In the field of electronic power, there is a problem with directed waves and waves triggered by a certain angle on the device thyristor. This paper will be discussed about visualization of rectified sine waveforms, triggering angles as well as integral values of directional waves in thyristor and three-phase source animation. With the GeoGebra tool, students can understand mathematical equations and make wave visualization on electronic power.
Analisis Geometri pada Robot Penggambar dengan Mekanisme Pantograf Suwarno, Djoko Untoro
Prosiding Konferensi Nasional Penelitian Matematika dan Pembelajarannya 2019: Prosiding Konferensi Nasional Penelitian Matematika dan Pembelajarannya
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (770.081 KB)

Abstract

Pantograf merupakan mekanisme dengan 4 lengan yang saling terhubung membentuk jajaran genjang. Pantograf biasa digunakan untuk penskalaan gambar dan dapat dijumpai pada robot. Robot penggambar dapat menggunakan mekanisme pantograf. Analisis mekanisme pantrograf dapat dilakukan secara geometri. Robot pantograf penggambar terdiri dari dua servo motor penggerak dan lengan yang saling terhubung. Servo motor berfungsi untuk menghasilkan sudut tertentu pada kedua lengan pantograf. Pada makalah ini akan dijabarkan analisis gerakan pantograf menggunakan hukum trigonometri dan dibuat algoritma untuk perhitungan kinematika maju dan kinematik balik. Implementasi algoritma perhitungan pantograf dilakukan dengan menggunakan software octave. Analisis gerakan yang dilakukan berupa jangkauan terdekat dan terjauh yang dapat dijangkau oleh pantograf. Pada analisis kinematika maju, variabel sudut diketahui dan dihitung koordinat yang terjadi, sedangkan pada analisis kinematika balik koordinat diketahui dan sudut dihitung.Pengujian dilakukan untuk gambar geomtri tertentu dan sudut yang dibutuhkan. Kesalahan (error) yang terjadi pada koordinat disebabkan karena pembulatan perhitungan sudut
Visualisasi Operasi Konvolusi menggunakan Freeware Octave Suwarno, Djoko Untoro
Prosiding Konferensi Nasional Penelitian Matematika dan Pembelajarannya 2018: Prosiding Konferensi Nasional Penelitian Matematika dan Pembelajarannya
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1664.615 KB)

Abstract

Operasi konvolusi digunakan untuk melihat tanggapan suatu masukan pada suatu sistem, seperti pengolahan citra dan pengolahan sinyal. Operasi konvolusi dua vektor data memerlukan beberapa langkah yaitu operasi perkalian, pergeseran dan penjumlahan. Operasi konvolusi dibedakan menjadi dua yaitu operasi konvolusi integral dan operasi konvolusi diskret. Operasi konvolusi diskret merupakan operasi perkalian antar polynomial. Mahasiswa sering kali mengalami kesulitan untuk memahami operasi konvolusi apalagi untuk koefisien yang besar. Operasi konvolusi dengan koefisien yang besar memerlukan komputasi untuk mempercepat perhitungan. Pada penelitian ini akan dijabarkan visualisasi operasi konvolusi diskret mengunakan freeware Octave. Operasi konvolusi diskret yang dijabarkan berupa operasi perskalaan, pergeseran, pengubahan tanda, dan operasi differensiasi. Visualisasai operasi konvolusi juga untuk menunjukkan sifat-sifat operasi konvolusi seperti sifat komutatif, sifat asosiatif dn sifat distributif. Visualisasi operasi konvolusi berupa grafik untuk operasi dua buah polinomial dalam bentuk diskret. Dengan adanya visualisasi ini mahasiswa lebih mudah dalam memahami operasi konvolusi dan dapat melakukan operasi konvolusi menggunakan Octave.
RELOKASI SISTEM PANEL SURYA UNTUK KEPERLUAN POMPA AIR DI PANTAI GRIGAK GUNUNG KIDUL Sumarno, Linggo; Suwarno, Djoko Untoro; Iswanjono, Iswanjono; Martanto, Martanto
ABDIMAS ALTRUIS: Jurnal Pengabdian Kepada Masyarakat Vol 7, No 2 (2024): Oktober 2024
Publisher : Universitas Sanata Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24071/aa.v7i2.10198

Abstract

The Grigak Beach community experiences difficulty obtaining clean water, especially during the dry season. The lack of duration of the solar panel system that powers the water pump in the drilled well is the cause. Therefore, an effort was made to relocate the solar panel system from the previous location to a new location, which allows the solar panel system to have a longer lifespan. The community service that was carried out successfully relocated the solar panel system from the old location to the new one. The solar panel system can have a lifespan of about two hours longer.
Sistem Akuisisi Data Pemakaian Bahan Bakar dan Jarak yang Ditempuh Berbasis ARDUINO Bram Anggita Putra; Djoko Untoro Suwarno
Widya Teknik Vol. 15 No. 1 (2016)
Publisher : Fakultas Teknik, Universitas Katolik Widya Mandala Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33508/wt.v15i1.1193

Abstract

Pada penelitian ini telah dirancang dan dibuat suatu sistem akuisisi data untuk pengukuran pemakaian bahan bakar dan jarak yang ditempuh. Sistem pada prototype ini terdiri dari bagian sensor konsumsi bahan bakar dan sensor jarak yang ditempuh. Sensor konsumsi bahan menggunakan metode counter per satuan volume. Sensor jarak yang ditempuh menggunakan rotary encoder dengan resolusi 10 pulsa per rotasi. Sistem akuisisi data menggunakan Arduino, disertai RTC (Real Time Clock) dan Sdcard. Informasi yang disimpan berupa waktu, konsumsi bahan bakar dan jarak yang ditempuh. Sistem menyimpan data setiap 1 menit sekali. Resolusi pemakaian bahan bakar 20 cc/sample dan resolusi jarak 1m /10 pulsa. Kata kunci : akuisisi data, sensor pemakaian bahan bakar, sensor jarak, increment encoder, arduino
Co-Authors Angga Dewanta, Alexander Rahma Angga Dewanta, Alexander Rahma Bernadeta Wuri Harini Bram Anggita Putra Damar Widjaja Damar Widjaja Febriyono Aji Prasetiyo Graseo Granteo Putra Haris Sriwindono Herpurnomo, Adnantio Herpurnomo, Adnantio Iswanjono Iswanjono Iswanjono Iswanjono Linggo Sumarno Lukas Puwoto Lusia Krismiyati Budiasih Martanto . Martanto Martanto Petrus Setyo Prabowo Primawan, A.Bayu Setiyani, Th. Prima Ari Theresia Prima Ari Setiyani Tjendro Tri Aryani Wahyu Prawisesa Nugroho Wiwien Widyastuti Wuri Harini