PERANCANGAN ALAT PENGUKUR TINGGI BADAN DAN BERAT BADAN OTOMATIS BERBASIS INTERNET OF THINGS

Aryo Nurcahyo; rosalina;

PERANCANGAN ALAT PENGUKUR TINGGI BADAN DAN
BERAT BADAN OTOMATIS BERBASIS INTERNET OF

THINGS
Aryo Nurcahyo

Penelitian ini membahas perancangan dan realisasi alat pengukur tinggi badan dan
berat badan otomatis berbasis Internet of Things (IoT). Sistem dikembangkan
menggunakan mikrokontroler ESP32, sensor ultrasonik HC-SR04 sebagai
pengukur tinggi badan, serta sensor load cell dengan modul HX711 sebagai
pengukur berat badan. Hasil pengukuran ditampilkan pada LCD dan dikirimkan
secara real-time ke aplikasi Blynk melalui koneksi internet. Metode penelitian
meliputi perancangan perangkat keras dan perangkat lunak, implementasi sistem,
serta pengujian kinerja alat. Hasil pengujian menunjukkan bahwa alat memiliki
tingkat akurasi yang tinggi dengan nilai error yang relatif kecil jika dibandingkan
dengan alat ukur konvensional. Selain itu, sistem mampu menghitung nilai Body
Mass Index (BMI) secara otomatis dengan hasil yang mendekati perhitungan
manual. Dengan demikian, alat yang dirancang dinilai efektif dan layak digunakan
sebagai alternatif alat ukur tinggi dan berat badan berbasis IoT.
Kata kunci:Internet of Things, ESP32, sensor ultrasonik, load cell, BMI.

ABSTRACT

DESIGN OF AN AUTOMATED HEIGHT AND WEIGHT MEASURING
DEVICE BASED ON THE INTERNET OF THINGS

Aryo Nurcahyo

This study discusses the design and implementation of an automatic height and
weight measuring device based on the Internet of Things (IoT). The system was
developed using an ESP32 microcontroller, an HC-SR04 ultrasonic sensor to
measure height, and a load cell sensor with an HX711 module to measure weight.
Measurement results are displayed on an LCD screen and sent in real-time to the
Blynk application via an internet connection. The research methods include
hardware and software design, system implementation, and device performance
testing. Test results show that the device has a high level of accuracy with a
relatively small error value when compared to conventional measuring devices. In
addition, the system is capable of automatically calculating Body Mass Index (BMI)
values with results that are close to manual calculations. Thus, the designed device
is considered effective and feasible for use as an alternative IoT-based height and
weight measuring device.
Keywords: Internet of Things, ESP32, ultrasonic sensor, load cell, BMI.