Rancang Alat Ukur Ketinggian Air Menggunakan Mikrokontroler NodeMCU ESP8266 Sistem IoT

Abstract

An instrument has been designed to measure the height using a HC-SR04 sensor based on the Internet Of Thing. In this tool, the component used to measure the height of the air is the HC-S04 ultrasonic sensor. Water level measuring devices with ultrasonic sensors have the disadvantage of unstable and inaccurate measurement results due to unstable surfaces. Ultrasonic sensors are very surface sensitive sensors that will measure unevenly, to get the most out of the container it needs to be in a few moments so that the air surface is stable. The workings of the water level sensor that uses the ultrasonic sensor HC-SR04 is by calculating the reflection of ultrasonic waves from the sensor to the surface of the water to get the water level results in the container. Output or digital output from the HC-SR04 sensor will be inserted into the Internet Of Thing microcontroller port which will then be processed to get the air level on the 16 x 2 LCD screen type M1632. Displays equipment testing which shows equipment that shows the height of the air in the container containing the same LCD screen as the one that was produced on the bar.