Perkembangan pesat kemajuan teknologi komunikasi seluler dan pengurangan biaya memungkinkan untuk menggabungkan teknologi seluler ke dalam sistem mikrokontroler untuk pengontrolan peralatan listrik. Untuk dapat mengendalikan peralatan listrik seperti lampu, kipas atau ac hanya dengan menggunakan perintah suara tanpa perlu bergerak berpindah tempat untuk menyalakan atau mematikan peralatan listrik. Penelitian ini bertujuan untuk mengendalikan peralatan listrik dengan gelombang suara dengan aplikasi android Blueetooth Voice Kontroler. Suara yang kita ucapkan sesuai dengan yang sudah diprogram dalam aplikasi Arduino pada smartphone android akan menyalakan atau mematikan peralatan listrik yang kita tentukan. Berdasarkan hasil pengujian pada prototype sistem kontrol peralatan listrik, bila aplikasi android Arduino Bluetooth Voice Controller diaktifkan dan diucapkan perintah  : Kipas ON / Kipas OFF,  Nyalakan Lampu / Matikan Lampu, Nyalakan AC /  Matikan AC peralatan listrik tersebut akan ON/OFF setelah perintah suara diberikan.The rapid development of cellular communication technology advances and cost reduction made it possible to incorporate cellular technology into microcontroller systems for controlling electrical equipment. To be able to control electrical equipment such as lights, fan or air conditioners only by using voice commands without the need to move from place to place to turn on or turn off electrical equipment. This study aims to control electrical equipment with sound waves with the Bluetooth Voice Controller android application. The sound we speak according to what has been programmed in the Arduino application on an android smartphone will turn on or turn off the electrical equipment that we specify. Based on the test results on the prototype control system for electrical equipment, when the Arduino Bluetooth Voice Controller android application is activated and the command is spoken: Fan ON / Fan OFF, Turn on Lights / Turn off Lights, Turn on AC / Turn off AC  the electrical equipment will turn ON /OFF after a voice command is given.Keywords: Android; Bluetooth; Arduino Uno; electrical equipment

So far, information on tourism object in North Sulawesi Province especially accessed through internet site is still limited. Seekers of information on tourist attractions must access some internet sites to get the required information. The problem of this research is how the model of tourist information system that can record, process and present information about the tourist attraction in North Sulawesi Province and presents according to the needs of the searcher. Several methods are used to generate the model of tourist information system, beginning with conducting surveys, making observations on internet sites that provide tourist information. From the data collection steps are then analyzed to get the system needs of the tourist object. The data obtained is used as a reference for designing using several design tools that are use case, Entity relationalship diagram, context diagrm, data flow diagram, and Flowchart. The results of this study is a model / design that is very helpful development of tourist information systems that can help tourism development sector in North Sulawesi Province. KeywordsModel, information system, tourist object.

North Sulawesi Province has experienced 600% growth in the tourism sector since 2015 and received The Rising Star award on April 25, 2019. Unfortunately, this tourism cake cannot be enjoyed by entrepreneurs in the tourism sector evenly, this is due, among other things, to the absence of promotion of tourism businesses. on a provincial scale that can be accessed by potential tourists and tourists themselves. This study aims to design a tourism business promotion on a provincial scale which is expected to be used as a reference for building a tourism information system as a forum for promoting the tourism industry in North Sulawesi. The design of the tourism information system uses the waterfall method, using several modeling tools including use case diagrams, and Entity relationalship diagrams, in addition to using interviews, observations for data collection. The results of this study are the design of a tourism information system as a forum for promoting the tourism business industry, which is expected to be used as a reference for the development of an information system which later in its implementation can be accessed by prospective tourists and tourists so that through the information system, tourism business actors can increase their income.

This research aims to design and build a well water quality testing software and refillable bottled water quality. This testing software is built using data from physical, chemical and microbiological parameter measurement and location of sampling area data. The software is designed using Microsoft Access as the database and Delphi 7 as the programming language. The built-in software is then tested using physical, chemical, and microbiological data of well water and refilled water that has been filtered through the depots of drinking water. Results of samples testing show that application software can be used as a tool to process data of water quality testing and refill drinking water. The software can provide reports on well water quality testing results and refill water according to well areas and water treatment sites. The software can compare parameters that do not meet the quality standard or meet the standard quality in accordance with the SNI standard.