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Wireless communication, in its infrastructure nature, faces many challenges such as fading, data coverage, and interference issues. Therefore, High-Fidelity or (Li-Fi) is utilized due to its ability to naturally provide high-density wireless data coverage in closure’s particularly helpful for application(s) in some areas while the radio interference conditions are concern. This article illustrates an advanced Li-Fi approach performing high-speed data transmission between two Personal Computers (PCs) utilizing the Arduino Nano-based technique. In the experimental phase, data is mainly used to be transmitted over red laser diode (630 nm) through (30 cm) in distance, a distance of 30 cm, achieving a high peak speed reach to about (512Bps). The proposed approach performance is computed by evaluating the most important and related metrics like Signal-to-Noise Ratio (SNR), Bit-Error-Rate (BER), and influence of throughput on input data over various light circumstance. The proposed approach mainly utilizes a keypad as a user input and two related detection models for both a solar cell and a photodetector in order to make a powerful comparison in terms of performance. the results showed that when the photodetector applies a higher-detection efficiency (via BER enhancement which reaches to 20% over solar-cell), the solar-cell clarify outstanding power and cost-activity. The mentioned findings are propped by elaborated statistical-analyses and MATLAB simulation to design, simulate and visualize the validate functionalities of the robustness and scalability properties of the proposed Li-Fi approach.

Based on national policy, renewable energy is a source of energy that can be renewed, such as water, geothermal, sun, biomass, wind, changes in sea temperature, biogas, biofuel and sea waves. The sun is a type of renewable energy that is used to fulfill human needs. This condition is because the sun is basically eternal or never runs out, so its use is easier than other renewable energy. PLTS is a power plant that converts sunlight energy into electrical energy, often called a solar cell. This design is intended to study the hybrid PLTS design system to reduce dependence on electrical energy from PLN. A hybrid system is a system that uses two energy sources which will then back up each other. The results of this test in the solar panel test, the highest voltage was 17.51 ​​and the highest current produced by the solar panel was 4.12, and the battery charging test for 9 hours was 51.85Ah. Weather conditions and time differences cause the light intensity received by the panel to produce varying values, voltage, current and power due to uncertain weather conditions.

In agriculture with the hydroponic method of the DFT system (Deep Flow Technique), the circulation of plant nutrients must occur continuously to prevent decay in plants. Along with the many concerns due to the large electricity costs incurred to run the irrigation system for hydroponic plants, the authors hereby design a tool in the form of a submersible pump as a medium for regulating the flow of water in plants by utilizing a 50 WP PV module instead of a source of electrical energy from PLN. The method used in this research is the method of observation, literature study, design, and testing. The results of the 50 WP solar panel-based submersible pump trial show that a circuit connected to a battery at 1M Head tends to produce a stable water discharge, which is an average of 6.03 liters/minute compared to one that is not connected to a battery, which is only 5.28 liters/minute. Furthermore, the resulting water discharge affects the quality of the plants, especially in root length, number of leaves, leaf length, and leaf size. The test results are used as a reference for the comparison of expenditure costs between irrigation systems run using solar cells and those based on conventional (PLN).

Pemanfaatan energi terbaharukan  dalam pertanian ialah matahari yang merupakan energi yang tidak ada habisnya dan dapat dimanfaatkan untuk mensejahterakan masyarakat khususnya dalam lingkup pertanian, Salah satu bentuk pemanfaatan energi terbaharukan di Desa Pontang Legon ialah dalam teknologi yang dapat mengatasi permasalahan para petani konvensional yang sangat bergantung pada cuaca dan iklim disebut juga dengan agrivoltaic namun pemanfaatan energi terbaharukan untuk petani masih belum optimal sebab saat ini masih bersifat sporadis atau  hanya dilakukan oleh beberapa orang atau kelompok masyarakat setempat. Metode yang digunakan dalam pengabdian di Desa Pontang Legon ini ialah observasi, studi Pustaka dan evaluasi. Hasil dari uji pemanfaatan energi terbaharukan melalui agrivoltaic ini sangat baik berdasarkan hasil evaluasi sebab agrivoltaic ini efektif untuk hidroponik   dan meningkatkan efesiensi lahan.

Pada penelitian ini dilakukan strategi kontrol daya pada sistem hibrid photovoltaic-baterai yang berdiri sendiri (standalone). Masa pakai (life-time) baterai akan semakin pendek jika baterai sering diisi dengan arus tinggi dan melebihi kapasitasnya (State-of-Charge (SoC)). Sistem yang diusulkan menggunakan dua buah konverter dc-dc untuk menghubungkan photovoltaic (PV) dan baterai lead-acid ke beban. Konverter DC-DC searah (unidirectional) digunakan sebagai antarmuka antara PV dan bus DC, sedangkan konverter DC-DC dua arah (bidirectional) digunakan sebagai antarmuka antara baterai dan bus DC. Strategi kontrol berperan mengendalikan aliran daya antara konverter dan beban untuk menjaga keseimbangan daya dalam sistem dan mengendalikan baterai untuk mendukung PV ketika daya PV yang tersedia tidak cukup untuk memenuhi beban. Strategi kontrol multi-loop digunakan pada penelitian ini, salah satu loop digunakan untuk menjaga SoC baterai dalam rangka mengendalikan daya keluaran PV untuk menghindari pengisian berlebihan (over-charging). Loop yang lain digunakan untuk memastikan keseimbangan daya sistem saat baterai sedang diisi pada batas maksimal arus pengisiannya. Sistem kontrol yang diusulkan, diimplementasikan tanpa memerlukan syarat kondisi apapun agar kontrol tersebut dapat beroperasi. Hasil simulasi menunjukkan bahwa kontrol multi-loop yang diusulkan dapat mengendalikan aliran daya pada sistem dengan tetap menjaga batas maksimal arus pengisian dan SoC baterai.

Electricity is a very important need for the life of many people. Especially with the increasing number of tools that use electricity as a source of energy in this day and age. With the increasing demand for electricity, the more electrical energy that must be issued, especially by PLN. Electricity is also a source of energy that is needed in all activities related to electronics, therefore its use varies greatly. The purpose of making this final project entitled "Installation of Solar Power Generation Devices (PLTS) as a Source of Electrical Energy in the Garden of the Mahktab Building, Panca Budi Campus" is as a form of saving electrical energy in garden lighting. Electrical energy saving is done by utilizing solar cells, batteries as current storage and LED lights which are operated with a control system. The method used in this final project is the design method. The method steps are analysis, design, manufacture and testing. analysis, design, manufacture and testing. The design of the solar cell device as a converter of solar energy into electrical energy which is then stored in the battery.