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All Journal Jurnal Jurusan Pendidikan Teknik Elektro Jurnal Pendidikan Teknologi dan Kejuruan JOURNAL SPORT AREA WIDYA LAKSANA Jurnal Nasional Pendidikan Teknik Informatika (JANAPATI) KOMTEKS: Komputer dan Teknologi Sains
Ketut Udy Ariawan
Universitas Pendidikan Ganesha
Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Other

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Need analysis of digital technology-based push up test: Instrument of arm muscle strength Artanayasa, I Wayan; Kusuma, Ketut Chandra Adinata; Ariawan, Ketut Udy
Journal Sport Area Vol 7 No 3 (2022): December
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/sportarea.2022.vol7(3).10641

Abstract

The rapid development of science and technology has an impact on the development of sports, both achievement sports, educational sports, and recreational sports. The use of technology and sport science is very important for the advancement of sports achievements. One of these implementations is the stage of testing and measuring physical conditions using instruments with a low level of human error. The purpose of this study was to analyze the need for the development of a digital technology-based push up test as an instrument for arm muscle strength. This research is a survey research that uses a quantitative descriptive approach. 256 respondents with a background as a lecturer at the Faculty of Sports and Health Undiksha, as well as athletes from Buleleng Regency, Badung Regency, Bangli Regency and Denpasar City filled out a questionnaire consisting of six statements. Questionnaires are used to determine the opinion of respondents on the needs of the developed instrument. Based on the results of the survey, the majority of respondents experienced difficulties in doing push up according to the procedure, and they stated that the manual push up test was prone to human error during calculations. Thus, all respondents agree with the development of digital technology-based arm muscle strength instruments. Referring to the results of the research above, this data can be one of the basic considerations in the development of a digital technology-based push up test which is intended in the process of measuring arm muscle strength with a good level of validity.
Push-Up Counter (PUC) as an instrument of arm muscle strength: Validity and reliability Artanayasa, I Wayan; Kusuma, Ketut Chandra Adinata; Ariawan, Ketut Udy
Journal Sport Area Vol 8 No 3 (2023): December
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/sportarea.2023.vol8(3).13245

Abstract

Accurate physical condition measurement results are obviously determined by the quality of the instrument, namely a valid and reliable instrument. Developing a push-up measurement tool combined with technology is an urgent need. Moreover, this study aims to determine the validity and reliability of the Push-Up Counter (PUC) as a sensor-based measurement of arm muscle strength. This research is development research that focuses on uncovering the validity and reliability values of PUC using a quantitative approach. The validity value was obtained from the assessment of three experts by conducting questionnaire which has four main aspects, namely: instructions, components, safety, and usage. 30 athletes/students were involved as the subject participants in measuring the PUC reliability. Furthermore, the data collection were analyzed by using SPSS to determine the value of r. This study found that the PUC was valid (r = 0.88). The Cronbach Alpha value of this reliability instrument was r = 0.41. Referring to the validity and reliability result, it can be concluded the PUC was feasible and elligible to be used in measuring the arm muscle strength in the process of physical test. However, PUC operation is not yet integrated with smartphones. These results also provide opportunities for further research in developing application-based PUC devices or Android.
Rancang Bangun Inverter Satu Fasa Lima Level Berbasis PWM untuk Perahu Nelayan Tradisional I Gede Haris Sandiana; Ketut Udy Ariawan; I Gede Nurhayata
Jurnal Pendidikan Teknik Elektro Undiksha Vol. 14 No. 3 (2025): JPTE Periode Desember 2025
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jjpte.v14i3.112932

Abstract

Nelayan tradisional masih banyak menggunakan genset berbahan bakar minyak untuk sistem penerangan saat penangkapan ikan malam hari, yang menimbulkan permasalahan biaya operasional tinggi dan dampak lingkungan. Penelitian ini bertujuan merancang dan membangun inverter satu fasa lima level berbasis Pulse Width Modulation (PWM) dengan topologi cascaded H-bridge sebagai alternatif sumber energi yang lebih efisien dan ramah lingkungan. Metode yang digunakan adalah Research and Development (R&D) dengan tahapan perancangan, pembuatan, dan pengujian sistem. Hasil pengujian menunjukkan bahwa inverter mampu menghasilkan tegangan AC dengan bentuk gelombang bertingkat yang mendekati sinusoidal. Efisiensi maksimum diperoleh sebesar 87,9% pada beban 60 W dan menurun hingga 54,5% pada beban 300 W. Tegangan keluaran mengalami penurunan seiring peningkatan beban, menunjukkan keterbatasan regulasi tegangan akibat sistem kontrol terbuka. Dibandingkan inverter pasaran, sistem yang dikembangkan memiliki potensi kualitas gelombang lebih baik, namun masih perlu optimasi pada efisiensi dan stabilitas tegangan.
Prototipe Sistem Monitoring Cuaca Melalui Tiga Sensor Berbasis IoT Menggunakan Raspberry Pi dan Protokol MQTT Ketut Adi Gunawan; Made Santo Gitakarma; Ketut Udy Ariawan
Jurnal Pendidikan Teknik Elektro Undiksha Vol. 14 No. 3 (2025): JPTE Periode Desember 2025
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jjpte.v14i3.113122

Abstract

Penelitian ini bertujuan untuk merancang dan menguji prototipe sistem monitoring cuaca real-time berbasis Internet of Things (IoT) yang diterapkan di area perkebunan. Sistem ini mengintegrasikan tiga sensor utama, yaitu sensor DHT22 untuk suhu dan kelembaban udara, sensor soil moisture untuk kelembaban tanah, serta sensor tipping bucket rain gauge untuk memantau curah hujan secara otomatis. Data sensor diproses oleh Raspberry Pi sebagai unit kendali pusat dan dikirimkan ke platform cloud menggunakan protokol komunikasi MQTT yang efisien. Hasil pengujian menunjukkan bahwa sistem mampu beroperasi dengan stabil, memiliki tingkat keberhasilan pengiriman data mencapai 99,2% dengan waktu tunda rata-rata 1,3 detik. Sensor DHT22 memiliki deviasi pengukuran antara 0,1% hingga -7,4%, sementara sensor kelembaban tanah menunjukkan selisih 0,3% hingga 1,5% dibandingkan alat ukur acuan. Prototipe ini layak digunakan sebagai solusi pemantauan cuaca untuk mendukung implementasi pertanian presisi yang terjangkau bagi petani lokal.
Implementasi Sistem Kontrol Otomatis Exhaust Fan Berbasis IoT untuk Monitoring dan Pengendalian Kualitas Udara Dapur Komang Haris Hendriawan; Gede Indrawan; Ketut Udy Ariawan
Jurnal Pendidikan Teknik Elektro Undiksha Vol. 14 No. 3 (2025): JPTE Periode Desember 2025
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jjpte.v14i3.113224

Abstract

Penelitian ini mengembangkan sistem kontrol otomatis exhaust fan berbasis Internet of Things (IoT) untuk monitoring dan pengendalian kualitas udara dapur secara real-time. Sistem menggunakan sensor MQ-135 untuk mendeteksi konsentrasi gas serta DHT11 untuk suhu dan kelembapan, dengan NodeMCU ESP8266 sebagai pengendali dan aplikasi Blynk sebagai media monitoring. Metode yang digunakan meliputi perancangan, implementasi, dan pengujian sistem. Hasil pengujian menunjukkan sistem mampu merespons perubahan lingkungan dengan waktu respons rata-rata sekitar 2 detik. Konsentrasi gas berhasil diturunkan dari 84 ppm menjadi 69 ppm melalui aktivasi exhaust fan. Analisis akurasi menunjukkan nilai RMSE sebesar ±2,16°C untuk suhu, ±6,17 ppm untuk gas, dan ±6,68% RH untuk kelembapan. Uji validitas menghasilkan koefisien korelasi sebesar -0,98 dan -0,97 yang menunjukkan hubungan sangat kuat. Sistem mampu bekerja secara stabil dan representatif dalam menjaga kualitas udara dapur.
Co-Authors Al-Fauga, Muh. Arsa, Putu Suka Artanayasa, Wayan Cahyani, Fibra Dewi, Ni Putu Ari Listya Gede Indrawan I Gede Haris Sandiana I Gede Nurhayata I Gede Nurhayata I Gede Ratnaya I Gede Siden Sudaryana I Gede Siden Sudaryana, I Gede Siden I Putu Suka Arsa Juliantara, I Gede Bagus kadek aditya pradipta Ketut Adi Gunawan Komang Haris Hendriawan Kusuma, Ketut Chandra Adinata M.T. S.T. I Wayan Sutaya . Made Santo Gitakarma Mahendra, I Putu Gede Adi Nyoman Santiyadnya Parwata, I Gusti Putu Adi Pracasitaram, I Gede Made Surya Bumi Pracasitaram, I Gede Surya Bumi pradipta, kadek aditya Putra, Harry Priyatna Raharja, I Gusti Ngurah Komang Rishi Sanuaka, Adi Ambara Satia, I Nyoman Ari Wardika, Kadek Windu Wayan Adnyana Yundari, Yundari