Alat Ukur Tinggi Badan dan Berat Badan Berbasis Arduino Uno Menggunakan Sensor Ultrasonik dan Loadcell

Abstract

Measuring height and weight is an important activity in the fields of health, education, and sports. However, manual methods that are still widely used are often impractical, require assistance from others, and are prone to errors in readings. Therefore, this study aims to design and build an automatic height and weight measuring tool based on the Arduino Uno microcontroller, using an HC-SR04U ultrasonic sensor to measure height and a load cell sensor connected to the HX711 module to measure weight. The measurement data is processed by the Arduino Uno and displayed in real-time on a 16x2 LCD screen. Tests show that the tool functions optimally with an average error rate for height (Ultrasonic Sensor) of 0.453%, and weight (Load Cell Sensor) of 1.581%.