The development of robots began when the military needed it as war equipment, and then it was used by some industries to develop production until now widely used for education and agriculture. Educational robots are usually more universal and simpler than industrial or military robots because robots for education are made only for simulations or prototypes. In this study, the authors surveyed prototypes of Educational botany robots, namely robots used to distinguish fruit maturity. In this journal, the behaviour-based control (BBC) algorithm will continue implemented into mobile robots. The movement of the mobile robot prepared in advance, and then actually the mobile robot is wheeled compared to the desired path. Besides, both kinematic and dynamic smelling mobile robots are derived and considered. In this study, only focused on mobile robots three-wheel differential drive, which will explore in a circular and straight path. In this journal, it can be found that image processing techniques can be used to determine the maturity of watermelons which are shown in different average values in each image obtained by the camera. The best models are generated by layer 32 hidden with an accuracy value of 87% at the training dataset level 60:10:30. The Behaviour Based Control Method has directional movements. But there was an error in each test so that I couldn’t take the watermelon correctly. The error rate reaches 25% from 40 tests or about ten failures in the form of deviating from the object point.

Purpose: Renewable energy in Indonesia is very abundant, one of which is solar energy. With Indonesia's location on the equator, the abundant potential of solar energy can be utilized as an environmentally friendly source of electricity. To increase the potential of solar energy as a source of electricity, it is equipped with a battery storage system. The most widely used electrical energy storage system is the battery. The purpose of this study is the use of solar energy for DC water pumps. The proposed system is also equipped with power, voltage and current monitoring on the solar panel side and on the load side (water pump).Methods/Study design/approach: The method used is to conduct a literature review to study and find out the development of a power monitoring system using solar panels. The next step is to measure solar radiation, calculate PV capacity and SCC. Furthermore, designing, modeling, simulating, analyzing, and implementing the optimal topology for water pump control using solar panels.Result/Findings: The results of the research are water pump control coordination devices using Sonoff with an IoT-based monitoring system. This device is capable of controlling PV and battery power flow. A prototype of a solar water pump has been produced which has been validated by experts in the field of appropriate technology with feasible results and received a positive response from farmers in Demak to be immediately implemented in the fields to help with the water crisis in agricultural landNovelty/Originality/Value: the advantage of this solar water pump is that the product is equipped with the internet of things (IoT) which can control the use of water pumps in the fields with our android devices wherever we are, this makes it easy for farmers to apply them, then the water pumps also do not use electricity which makes this water pump not harmful to farmers, because in the past many farmers were electrocuted and died.

AbstrakMobil urban adalah mobil yang mesin dan dimensinya didesain untuk jalan raya di kota besar karena jalanan di kota besar karena biasanya padat dan macet. Mobil mungil ini bisa dipakai untuk menghemat bahan bakar minyak (BBM) karena memang konsumsinya tidak sebesar mobil jenis lain [1]. Salah satu hal yang perlu diperhatikan dari mobil urban adalah segi kekuatan dari rangka/frame yang menerima beban oleh beberapa komponen diantaranya, pengemudi, mesin penggerak, body dan baterai. Simulasi beban statik casis dan simulasi aerodinamis dari bodi kendaraan dilakukan dengan menggunakan software Solidworks yang dilakukan pada rangka dengan dari baja kontruksi jenis Al 6061 dan body fiber. Hasil analisis dan simulasi, displacement maksimal beban bodi pada casis sebesar 3,77 mm dan von Mises Stresses beban bodi pada casis sebesar 2,17 N/mm2. Displacement maksimal beban penumpang pada casis sebesar 4,42 mm dan von Mises Stresses beban bodi pada casis sebesar 0,32 N/mm2. Flow simulation pada kecepatan angin 11.12 m/s diperoleh gambar tekanan, dimana terdapat tekanan yang tinggi pada bagian ujung depan bodi dengan nilai tekanan maksimal yang terdapat pada color bar adalah sebesar 101.561,12 Pa.Kata kunci: Desain dan Simulasi, Frame, Bodi, Urban, Software CAD 1.Pendahuluan Bila kita melihat sejarah ditemukannya mobil dimana saat itu, tahun 1885, seorang Insinyur dari Jerman, Karl Benz, menemukan sebuah konsep sederhana dari sebuah mobil. Sebenarnya apa definisi dari mobil itu sendiri?. Tentu jawaban tidak sekedar mobil adalah sebuah benda yang terbuat dari metal dengan roda pada setiap sudutnya. Namun secara lebih spesifik bisa dijelaskan bahwa mobil adalah sebuah energi converter, sebuah mesin yang melepaskan energi yang terkunci dalam bahan bakar, seperti bensin atau solar dan mengubahnya menjadi sebuah energi mekanik untuk menggerakkan roda dan gigi. Begitulah penjelasan singkat mengenai cara kerja mesin mobil [2]. Gambar 1. Sistem penggerak mobil [3]Ada banyak bagian dari mobil yang mempengaruhi kinerjanya, antara lain casis dan pemindah tenaga. Casis merupakan bagian paling dasar yang berfungsi mendukung mesin, suspensi, dan bagian-bagian lainnya, Casis menentukan stabilitas dan kenyamanan kendaraan. Sedangkan pemindah tenaga merupakan seluruh komponen yang terkait secara langsung dalam proses pemindahan tenaga dari motor penggerak sampai ke roda/wheel.Aerodinamika untuk mobil menjadi aspek yang sangat diperhatikan dalam desain bodi mobil. Dengan aerodinamika mobil yang tepat, akan dapat mengoptimalkan engine power untuk menjadi daya dorong dan traksi mobil, hemat bahan bakar dan terjaminnya stabilitas mobil. Semakin cepat jalannya mobil, secara umum akan meningkatkan gaya aerodinamika yang terjadi pada mobil meliputi gaya hambat (drag force) aerodinamik, gaya angkat (lift force) aerodinamik dan gaya samping (side force) aerodinamik [4]. 156

On April 19, 2020, the Republican Covid Task Force declared that the Covid-19 pandemic was a national disaster in Indonesia. At that time it was confirmed that there were 6575 cases and an increase of 5.23% compared to the previous day, then there were 5307 people in treatment which increased by 5.55% compared to the previous day, it was reported that 582 people died, which increased by 8.79 % compared to the previous day, and 686 recovered patients. WHO reports that the case fatality rate (CFR) or the death rate of Covid-19 cases in Indonesia reached 8.3%, which is twice the world's CFR. In this study, the main focus is to detect masks and body temperature used by visitors with various variations of masks on the market today, and next is to control the servo motor according to the detection conditions whether using a mask in real-time. Based on research on the system that has been tested, it shows that the components used to generate heat are very effectively used and can work as expected, and the MobilenetV2 method applied to the Raspberry Pi as the brain of the system can work as expected and has an accuracy rate of 99%. The AMG8833 sensor can read effectively at a maximum distance of 30 cm, the temperature reading deviation level is 0.1⁰C.

<p><em>Quadrocopter is an aerial vehicle platform that has become very popular among researchers from the past because it has advantages compared to conventional helicopters. The quadrocopter design is very simple and unique but seen from an unstable aerodynamic standpoint. From existing research, researchers have proposed many control system designs for quadrocopter. In this study, the author presents a fuzzy logic controller for quadrocopter. The method in this research is by designing hardware. After that the design for fuzzy controllers. Then the designed fuzzy controller is tested in the Hardware In Loop (HIL) setting. The experimental results and validation of the controller application functions are considered satisfactory and it is concluded that it is possible to stabilize quadrocopter with fuzzy logic controller.</em></p>