Alat charger untuk baterai berkapasitas 650 mAh menggunakan sel surya merupakan uji coba alat yang digunakan untuk charger baterai berkapasitas 650 mAh menggunakan energi matahari. Baterai 650 mAh ini digunakan pada drone. Alat charger menggunakan sel surya ini digunakan sebagai alternatif pengisian energi pada baterai. Alat ini dirancang dengan menggunakan resistor, kapasitor, dioda, saklar, baterai 650 mAh, LED, sel surya, IC lm317, dan trimpot. Perangkat berupa sistem analog yang menggunakan voltage drop dan memanfaatkan step up step down serta LED sebagai indikasi pengisian. Hasil uji fungsi dilakukan dengan cara mengukur intensitas cahaya menggunakan alat lux meter, baik pada saat beroperasi maupun tidak untuk mengetahui nilai intensitas cahaya. Masing-masing panel menghasilkan keluaran tegangan rata-rata 6 Volt DC dengan arus 200mA. Untuk memenuhi kekurangan tegangan, keluaran panel surya dimasukan terlebih dahulu ke modul DC-DC Step Up. Dari modul Step Up tersebut dihasilkan tegangan keluaran sebesar 12 VDC yang kemudian dipakai oleh modul charger untuk melakukan pengisian baterai Lithium-ion Polymer (LIPO). Waktu yang efektif untuk proses pengisian baterai menggunakan sel surya adalah pada waktu siang hari sekitar pukul 11.00 sampai pukul 13.00. Dari hasil uji fungsi yang dilakukan, alat bekerja dengan baik yang ditandai dengan LED berwarna merah yang mengindikasikan sedang terjadinya proses charging. Dengan demikian, alat ini bisa dimanfaatkan sebagai pengisian energi alternatif pada drone yang menggunakan LIPO yang memiliki keterbatasan waktu terbang. The charger for a battery with a capacity of 650 mAh using solar cells is one of tools used for a battery charger with a capacity of 650 mAh using solar energy that commonly used in drones. This solar cell is as an alternative charging energy for the battery. This charger is designed using resistors, capacitors, diodes, switches, 650 mAh battery, LEDs, solar cells, IC LM317, and trimpot. An analog system based on a voltage drop and utilizes step up step down and LEDs was used as an indication of charging. The testing was carried out by measuring the light intensity using a lux meter, both during operation and not to determine the value of light intensity. Each panel produces an average voltage output of 6volt DC with a current of 200mA. To meet the shortage of voltage, the output of the solar panel is first entered into the DC-DC Step Up module. From the Step Up module, an output voltage of 12 VDC is generated which is then used by the charger module to charge the Lithium-ion Polymer (LIPO) battery. The effective time for the battery charging process using solar cells is during the daytime around 11.00 to 13.00. From the results of the function test carried out, the tool works well which is marked by a red LED which indicates the charging process is occurring. Thus, this tool can be used as alternative energy charging for drones that use LIPO which has limited flight time.
In this study, a comparative study was conducted on the use of the Google Classroom and Zoom Meeting platforms during online lectures held at Nurtanio University. The object of research is students from various study programs at Nurtanio University, totaling 82 people. Data were obtained from questionnaires filled out by students on a google form with an ordinal scale. The questionnaire is divided into three components (lecture implementation, lecturer capabilities, and facilities and infrastructure) with a total of 15 statement items that compare perceptions of using Google Classroom and Zoom platforms. Overall, students gave a perception of the "good" category on the three assessment components with an average score for the Zoom and Google classroom platforms respectively 4.07 and 3.90 in the implementation of lectures, an average score of 4.06 and 3.96 for lecturer capabilities, and an average score an average of 3.84 and 3.76 for facilities and infrastructure. To find out whether there is a difference in student perceptions on the two platforms, a statistical test using SPSS is carried out, namely the Wilcoxon marked rank test. The results obtained are that there are differences in student perceptions on the use of the two lecture platforms, namely the perception of students using Google Classroom is better than using Zoom as evidenced by the Asymp score. Sig. (2-tailed) = 0.007 and Z value = 2.692.
The chemistry lecture at Universitas Nurtanio needs teaching materials innovation to increase students' activity and learning motivation. This research aims to develop worksheets on the material of elements, compounds, and the periodic table and determine the validity and practicality. The stages carried out in this study are the define, design, and development stages. The validity and practicality data analysis used the moment kappa (k) formula. The average validity and practicality are 0.87 and 0.77, respectively, with very high criteria. The validity and practical result indicate that a guided inquiry-based worksheet can be applied as teaching materials on elements, compounds, and the periodic table in lectures.
This research used the method of descriptive content analysis study. The analysis was done on any kind of scientific articles concerning to the usage of Ca(OH)2. Ca(OH)2 has used widely in any kind of liveness, such as the preservative on coconut sap and the eggs of purebred chicken, the preventer of browning on flour, the controller of rotten the base of the stem on the plants, as the alternative of the substance of mordant on textile ingredient, as the mixture of hampering the development to colony P. capsica diameter, as the mixture for treatment Orf traditionally, as the substance which helps in the process of separating weight metal waste industry. Ca(OH)2 is also used for the process of immersion to reduce the cyanide content inside cassava leaf, as the Thickener in increasing bio grease performance environmentally. Ca(OH)2 is the ingredient added to the processing of production on various chips in the stage of ingredient immersion. The addition of Ca(OH)2 has the purpose to repair chips' texture based on consumer wants. Ion calcium is by Ca(OH)2 having the reaction with the carboxyl group by pectin which is from tubers or fruits which are used as the main ingredient of chips. The Calcium hydroxide produced the gas CO2 which can form the pores in the chip surface, which had a good impact to have a texture crunchy chip produced. Another fixing of the texture, the addition of Ca(OH)2 has also the purpose to prevent the browning reaction until the appearance of chips becomes better. The effect of browning is going to appear because there is a reaction between the saccharides with the protein or amino acid. On some variously of chips ingredient, the function of Ca(OH)2 can omit the mucus, dissolve the mucus stuck, omit the itchy sensation, and simplify the process of development of chips when it is fried. The usage of concentration and the immersion time of Ca(OH)2 can turn into differences in every main ingredient for chips. It is occurred because the differences of tubers kind or fruit used, the natural water contains which was had to tubers/fruits, the method/the technique of immersion, and the temperature of immersion.
Penelitian ini bertujuan membahas pengenalan deteksi objek melalui platform transformasi digital sehingga diharapkan dapat berkontribusi terhadap pembelajaran anak sejak usia dini. Kemajuan teknologi tidak hanya dibarengi dengan dampak positif, tetapi dapat juga menimbulkan dampak negatif. Penggunaan teknologi digital di kalangan anak usia dini dapat menimbulkan kondisi yang kurang baik apabila terjadi pergeseran orientasi pemanfaatannya, karena teknologi digital banyak menyediakan fasilitas jejaring sosial, game online, chatting yang mengakibatkan anak lupa waktu, tidak kreatif dan tidak aktif bahkan dapat berpengaruh kurang baik terhadap jasmani dan rohani anak. Hal ini menjadi fokus peneliti, terutama anak usia dini. Salah satu kemajuan teknologi yang dapat mempengaruhi perkembangan anak adalah gadget. Pemanfaatan gadget dapat diarahkan sebagai platform pembelajaran anak usia dini untuk mengenal benda-benda di sekitarnya, misalnya hewan, tanaman, mobil, bangunan. Cara kerja deteksi objek adalah menerima masukan berupa gambar dan menunjukkan hasil klasifikasi sesuai gambar yang diterima. Diharapkan dari penelitian ini, anak usia dini dapat memanfaatkan kemajuan teknologi dan mengenal objek di sekitarnya.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.