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The internet as a communicator of information is now a necessity. Particularly in the provision of information for a company, government organizations / agencies such as Village Centers that require a fast, precise and accurate data management system that can provide more complete, up-to-date, interactive and dynamic information. In Demangharjo Village the information system related to Village Information is still submitted in the form of a guide book and the service is still done manually. Basically, population residence service activities are required to take care of application letters at the village office with the applicable procedures, so that in practice it will certainly take a long time and energy. For this reason the author made the Final Project concerning the Design of Demangharjo Village Website with the metedo Waterfall. Through this website, it is expected that information will be conveyed more quickly and accurately, maximum service and information transparency, village introduction process and population data storage to accelerate the work of village officials in serving the community and make it easier for citizens to submit services or find out village information.  

The community's need for electricity is getting higher, so alternative energy sources such as solar heat are needed to replace energy sources from fossil fuels in meeting electricity needs. In this paper we design a two-axis solar tracker with an LDR sensor. A sun tracking system is a unit that is combined into one to control the position of the tracking device with the aim of making the surface of the solar panel module always facing the direction of sunlight. This research discusses the Prototype of the Sun Tracking System in Arduino Based Solar Power Generation Systems to get maximum solar energy. This system will make solar panels move automatically so that sunlight absorption can be maximized. The main control uses Arduino nano which gets input values ​​from the LDR sensor then is processed to the output system. With the control system method can automatically be seen the difference in the results of a fixed solar panel with a solar panel with a tracker, from the comparison we get a solar panel with a tracker to get more optimal results.  

Community service activities for Muhammadiyah Elementary School Teachers in Polokarto Subdistrict, Sukoharjo Regency have been carried out. The background of this activity is the information obtained that the teachers in the school still use books and blackboards especially for subjects related to Science so that students become less creative and innovative thinking. activities carried out in the form of ongoing activities, namely training in the use of props style, motion and energy as many as 10 kits, presentation of the results of the practice of using props and the process of dissemination to students. The results obtained that all participants in understanding the teaching aids that have been trained, seen from the activeness of the participants, the ability of participants in the presentation and the results of dissemination to students in their respective schools