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Electrical equipment plays an important role in everyday life, from households, schools, hotels, offices, to industrial environments. Because it really helps humans in making work easier. The need for automated tools to facilitate human activities, makes the need for smart chips or microcontrollers increasing. A new breakthrough in the world of microcontrollers with the application of Arduino.Especially at SMPN 10 Salatiga, there are fish ponds and garden lights, which you forget to feed or not, while the officers forget to turn off the lights, causing the fish to die and the lights stay on even though it is noon. This study tries to implement Fish Feed Control and  automatic garden lights on and off using Arduino and scheduling, this is so that the fish stay healthy   and the garden lights can turn on or off according to the schedule desired by management. The author designed a garden lamp and automatic fish feed based on a case study at the school. The tool is designed with three sources of tool control. The first manual is pressing the fish feed manual button, the light switch and the reset button. Both semi-automatic, as a fish feeder, light ON/OFF and reset remote control with the Android application. The third auto is scheduled feeds and lights. This tool is designed to manage fish feed and garden area lighting. This tool is practical to use, inexpensive, useful, flexible and easy to build. The classification of this tool is sufficient for the needs of the school garden. Among the advantages of this tool is that it can be controlled remotely effectively 25 m without a hitch using the android application. The author hopes, this tool provides benefits and solves problems in schools.

This Research is generally aimed at designing a system that can solve problems at Hotel Oyo Jakarta Selatan. In addition to the use of bathroom tools, there is a need for a gas controller in the bathroom space, especially ammonia gas and other gas in the bathroom. The bathroom control system at Hotel Oyo Jakarta Selatan is currently ineffective, in the use of the bathroom tools to hotel guests and hotel staff. The reseach method used by researcher is The research step begins with research and information gathering, then planning and developing the initial form of the product or system, and field testing the feasibility of the system or product, if there is a revision, it can be developed further before conducting the main field test. . Based on the research results, monitoring ammonia gas in rooms based on a microcontroller can be a solution for the Oyo South Jakarta hotel in monitoring rooms, both from guests or hotel employees more effectively and efficiently , and to facilitate the management of existing bathroom rooms in the Hotel Oyo Jakarta Selatan

The purpose of this thesis is to produce tangible results in providing comfort or convenience in controlling electrical appliances, including turning on or off lights at home and controlling other electrical appliances. The method used in making the Design of Control System for Electrical Equipment Using Bluetooth Based on the Atmega 328 Microcontroller is a prototype. This research method consists of several stages, library research, analytical methods, design and implementation methods. The results achieved are reducing the number of fires due to electrical short circuits and increasing aspects of comfort and convenience for users as well as people with disabilities and the elderly, who find it difficult to stand or to reach lights and the implementation of infrastructure devices, where a series of these tools can work after bluetooth devices are available in the community. android smartphones. connected to the bluetooth module connected to the arduino microcontroller. Basically, using the principle of this tool, the user must be able to operate a smartphone based on the Android operating system. The conclusion is that this equipment has been tested and can be used as a controller of power tools with a lightweight android smartphone via a Bluetooth connection without having to press the switch button.