@thesis{thesis, author={Farini Nathania Pradyna and Husada Hendrianto}, title ={RANCANG BANGUN PROTOTYPE ALAT PENGENDALI PENDISTRIBUSIAN AIR TANDON MENGGUNAKAN LORA}, year={2023}, url={http://156.67.221.169/5739/}, abstract={Water is a source of energy that comes from nature and is the most abundant source of energy and is often used by humans. Water is used in almost all aspects of life. In many industrial companies, water has many uses. Most industrial companies or factories have more than one reservoir that is used to accommodate all kinds of needs needed by the factory. Most of the equipment used to regulate and distribute water still works manually, and when water is filling the reservoir, a mechanical valve is to be installed which when the water is full closes the tap and other reservoirs that are already empty will not be filled if not filled manually. With this method, the amount of water in the reservoir is not known with certainty whether it is full, half full, or nearly finished. When it is full until the faucet is about to close, the pump is still on so the valve only closes briefly and is about to open again causing cracked or leaking water reservoirs in certain areas and in fact we also cannot identify which reservoirs are full or empty. So, a prototype of an Arduino-based reservoir water distribution controller using LoRa was designed and built. The research method used in this study is the Quantitative Experimental Method with the results of testing the device, where the solenoid valve opens the valve and flows water at a voltage of 0.447 VDC when the water is half full and the current is 0.13 A. Then the solenoid valve opens the valve and flows water at a voltage of 0.447 VDC when the water is ¾ empty and the current is 0.14 A. And LoRa can send and receive data with a distance of less than 1 kilometer in the form of information about pumps, solenoid 1, solenoid 2, and solenoid 3 whether they are working or not. Thus it can be concluded as a whole that the designed system and prototype work well. Keywords: Water, Tandon, LoRa} }