@thesis{thesis,
		author={ },
		title ={Alat Ukur Ketebalan Digital Menggunakan Sensor Hc-Sr04 Berbasis Arduino Uno R3},
		year={2022},
		url={},
		abstract={Water visibility detector is the one of instrument which is detect the water
clearance with the voltage output. The design of this instrument using the arduino
uno as the microcontroller and photo transistor as its sensing device. The testing
of water visibility using the homogeny liquid and compare with turbidity meter.
The test result indicates the voltages is getting higher when the water visibility is
clear}
		}