The use of electrical energy that is often encountered in households is leaving the house with the lights on, leaving electronic goods stuck in the socket, charging cell phones overnight and turning on the air conditioner when no one is around. This unwise behavior will result in a high increase in the use of electrical energy. To reduce this unwise behavior, a device will be made that functions as a switch to cut off electrical energy automatically when we leave the room. This tool uses an Arduino Uno microcontroller with a Passive Infrared Receiver sensor to flow electrical energy when we enter the room and cut off electrical energy when leaving the room. It can be concluded that the use of an automatic switch can reduce electrical energy consumption. Automatic switches with a delay of 20 seconds compared to conventional switches have a significant ratio of electrical energy consumption as indicated by the test results of a multiple ratio of 0.00 with a test level of less than 0.05. Using an automatic switch with a 20 second delay results in savings in electrical energy consumption of 48.76% of the electrical energy consumption using conventional switches.
Energi alternatif merupakan sumber energi terbarukan, contohnya seperti matahari, angin, air, biomasa dan panas bumi. Energi pasang surut merupakan pemanfaatan energi yang dihasilkan dalam perpindahan massa air akibat pasang surut dengan efek rotasi bumi dan gravitasi bulan. Energi ini banyak terdapat diselat karena pada selat terjadi penyempitan ruang gerak arus sehingga kecepatan arus menjadi lebih cepat. Salah satunya adalah Selat Pulau Serangan. Tujuan penelitian ini adalah mengetahui potensi energi listrik dan kerapatan daya di Selat Pulau Serangan. Pengukuran arus laut menggunakan metode Lagrange dan alat Current Meter di delapan titik penelitian, kemudian dengan metode Regresi Sederhana Deret Waktu untuk meramalkan ketinggian air. Hasil perhitungan menunjukkan bahwa energi yang dihasilkan saat pasang mencapai 248,028046 kilo Joule selama 24 jam, sedangkan saat surut mencapai 251,8062 kilo Joule selama 24 jam. Untuk rapat daya terbesar berada disekitar jembatan berkisar 25,3604 – 47,05809 W/m2, sedangkan rapat daya terkecil berada di sebelah utara jembatan berkisar 0,012069 – 0,121019 W/m2.
Mutu pelayanan kesehatan harus selalu ditingkatkan demi terwujudnya derajat kesehatan masyarakat yang baik. Salah satu hal yang dapat dilakukan adalah dengan menjaga kualitas sarana dan peralatan kesehatan yang tersedia. Indikator alat kesehatan yang berkualitas diantaranya terjamin ketelitian, ketepatan dan keamanan dalam pemakaiannya. Adapun beberapa alat kesehatan yang sering digunakan seperti EKG, regulator flumeter, tensimeter digital, sterilisator kering, examination lamp dan lampu UV, merupakan suatu elemen penting yang menjaga keberlangsungan pelayanan kesehatan masyarakat. Kegiatan pengabdian kepada masyarakat ini bertujuan untuk perawatan dan perbaikan alat kesehatan dan merupakan pelatihan bagi teknisi dan tenaga medis. Hal ini juga akan meningkatkan keterampilan dalam mengelola peralatan kesehatan. Metode yang digunakan adalah observasi, ceramah tentang materi kalibrasi, inventarisasi dan praktek langsung melakukan perbaikan alat kesehatan. Kegiatan ini dapat diikuti oleh seluruh tenaga kesehatan di puskesmas dengan harapan tanggung jawab peralatan kesehatan tidak hanya dimiliki oleh teknisi saja, tetapi menjadi tanggung jawab tenaga kesehatan lain juga. Kegiatan yang telah dilakukan pada pengabdian ini adalah inventaris alat untuk mempermudah pengecekan dan perbaikan alat kesehatan. Adapun alat yang mengalami permasalahan adalah exmaination lampdan lampu UV. Pada examination lamp terjadi kerusakan pada lampu dan sudah dapat digunakan kembali dengan melakukan penggantian lampu. Sedangkan pada lampu UV terjadi kerusakan pada travo dan fitting, setelah diganti komponen tersebut lampu UV sudah dapat digunakan lagi. Kegiatan ini secara tidak langsung memberikan ilmu dan pelajaran berupa pengalaman. Serta menambah wawasan tentang operasional alat medis di Puskesmas Tampaksiring II. Peningkatan pengetahuan peserta pengabdian dapat dilihat dari kemampuannya ketika ikut langsung dalam memperbaiki alat kesehatan.
A magnetic stirrer is a laboratory tool that is used to stir or mix a solution with another solution so that the solution is heterogeneous. Technology and science have now progressed, so in this study, a microcontroller-based magnetic stirrer was designed. This tool is designed with digital speed and time settings, with digital technology, it is hoped that the data reading error of the speed and time of mixing samples can be minimized, efficient in time, relatively easier to use, and produces a homogeneous solution. Based on the results of the analysis that has been carried out by a microcontroller-based magnetic stirrer in a solution with low viscosity from mixing water and syrup, it requires mixing time for 1 minute with low, medium, and high speeds. For a solution with a higher viscosity using water and special grade syrup, it takes 5 minutes at medium and high speeds. To mix water with salt and water with sugar takes 10 minutes at high speed.
Clinical laboratory units must meet safety requirements such as temperature stability and room humidity because the materials and substances used are sensitive to changes in temperature and environmental conditions, so it is important to carry out routine monitoring. The purpose of this research is to design an internet of things (IoT)-based thermohygrometer that can make it easier for users to monitor temperature and humidity even though the user is outside the laboratory. This tool can also store the results of temperature and humidity measurements making it easier for the user to monitor changes in temperature and humidity that occur. The method used is descriptive exploratory with a prototype system, namely the system development process, users and the required data and results obtained through a tool that has been designed. The results of research conducted using an IoT-based thermohygrometer prototype after statistical testing, there was no significant difference between the reference thermohygrometer and the IoT-based thermohygrometer prototype and the readings from the thinkspeak web. For temperature and humidity measurements that have been carried out at the X clinical laboratory in Denpasar, it still does not meet the standards.
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