Automatic sprinklers using a soil moisture sensor is formed based on microcontroller technology. The hard- and software system were designed to adapt the greenhouse prototype. The sensors were calibrated by comparing the value with the standard instruments. Observations were conducted on the kale seedsand it monitored for seven days. Based on the observation result, the sensorsable tomeasure temperature, humidity, light intensity, and soil moisture in the greenhouse. The automatic sprinkle pumped the water according to the values of soil moisture sensor. The values of those sensors have been delivered to webserver and android application. Moreover, the system is able to grow the kale plant in the greenhouseprototypevery well.
<p>Virtual Trainer of Mobile Augmented Reality (AR) -based Electrical Lighting Installation is a technology that can be utilized as a substitute for conventional trainers to modern virtual-based trainers. The use of virtual trainers Electric lighting installation can be used anywhere and anytime with the help of an Android-based smartphone device. The use of AR technology is a technological development that helps users be able to interact directly with lighting installation components in a virtual form that has been designed to resemble the actual form. This study applied AR technology to learning aids called virtual trainers in the field of electrical lighting installations specifically residential. In running a virtual trainer application, several procedures must have been performed before it became an application that was ready to use. The results of this study were virtual trainers as an aid in understanding the components of residential electric lighting installations with AR mobile technology. This application system simulated 3D of 1 phase electrical lighting installation components in residential homes.</p>
South Java Coast in Indonesia is a potential location for developing wind power due to the abundant wind resources. One of the prospective areas is Baru beach, Srandakan, Bantul, Yogyakarta. In this area, the wind speed could reach 0-12 m/s with the average speed was 6 m/s. The objective of this research is to design and manufacture of Hawk Wings blades. The blades were hardly stop when spinning resulting quick rotation and high torque which were suitable for the wind characteristics at Baru beach. The windmill installation consists of some main components, i.e. blade, AC generator 3 phases, tower and foundation, wind orientation control, rectifier, battery, and load. The direct method using 2000 watt generator was used to design the wind mill. The blade was disassembled and then installed to the generator axis. The DC electricity was used as a power for charging 12 volt batteries. At Baru beach, the blade with a radius of 95 cm, width 24 cm base, 8 cm wide end a angle of 0-37° produced rotation of 0-2000 rpm, and voltage of 0-48 volts. The tests were carried out for 38 hours resulted in 3224,86 watt hour energy. As a result, the average of 1 hour production process generated electrical energy in the form of DC at 84.86 watt-hour.
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