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Aquaponics is an activity to cultivate plants and fish. Giving the organic liquid fertilizer as a nutrient enhancer will improve the quality of catfish and lettuce yields. However, this causes the water to become dirtier. The deteriorating water is characterized by the TDS value in aquaponic ponds exceeding 500 PPM. If the TDS value exceeds 500 PPM, water drainage will be applied. For treatment of aquaponic, experts use manual control. The system is designed to solve it. The method used in this Final Project is the study of literature to find the basic theory in aquaponics and analyze the problems. The next thing to do is designing the system, starting from the design of automatic control systems to remote monitoring systems. Afterwards, testing tools is conducted to see whether the system is able to run well. Based on the test results, the system can run well; however, a number of deviations are found, including the RTC test showing a delay time for 00.02.10 of RTC compared to the national standard time and an error of 2.4% found on a calibrated TDS sensor testing. The success rate of sending monitoring data is 100% of Antares connectivity testing.

The advancements in warehouse robotics at this current moment is considered as a trending topic. There is an abundance of multinational electronic companies that requires the use of robots in the field, especially warehouse robots that can be used to send and receive items efficiently. The width of warehouses with many branching routes creates problems for the movements of these robots. An example of said problem would be the inability to move efficiently using the nearest route possible. Therein lies the need for an algorithm that may solve these issues. This research proves that the use of A* Algorithm can be implemented for warehouse robot tracks which involves the usage of visible light communication method. The routes used for experimentation have specialized schematics in the form of a grid. In these experiments using a track with 2x2 and 3x3 schematics presents a success ratio of about 56,6% to 66,6% with an estimate distance calculation error between a minimum of 1cm and maximum of 20 cm. With the implementation of A* Search Algorithm, the robot could determine the shortest route in which it could efficiently move less steps compared to robots which uses all possibilities that exists.

No doubt every person wants to be healthy in order to move well. One of the health conditions to note is to keep blood pressure. many people sick one cause is high blood pressure. there are two methods of measuring blood pressure ie invasive and non-invasive. using the oscillometric method the measurement can be performed automatically, with the help of a piezoresistive pressure sensor connected to arduino mega 2560. so that the measurement data in the form of name, age, and blood pressure can be stored on the SD card that can be read again if needed. In this research the difference between the systolic or diastolic values of blood pressure reading with analog devices compared with automatic blood pressure reading tool and obtained that the average difference of 3,265 mmHg for systolic value and 6,165 mmHg for diastolic. Then this difference is used in the calibration process so that the result of automatic blood pressure reading tool is better. The result of calibration reading tool has 99.47% - 99.82% accuracy

Lighting devices, for instance, electric lamps hold an essential role in wide range application either for industrial or household applications which mostly for illuminating purposes. Energy Saving Lamp (ESL) gaining the scientific attention replacing outdated lighting technology such as an incandescent lamp or Glass Lighting Splinter (GLS) due to some reasons. However, in their practice, the use of ESL technology remains challenging regarding its low efficiency which arises from the high harmonic current. According to Electromagnetic Compatibility (EMC) Standard class C IEC-61000-3-2, there is a maximum permissible limit of the harmonic) current that being emitted by lighting equipment during their operational time. Thus, we attempt to analyse the Harmonic Current Emissions (HCE) that is generated by a specific brand of ESL. We employed some filters and run a performance test to solve the aforementioned problem. To optimize the investigation outcomes, we applied insertion loss analysis in the filter selection. The key finding in our observation is LC-LPF filter shows the most suitable filters fulfilling the EMC standard which potentially can be applied in ESL technology.