RANCANG BANGUN ALAT PRAKTIKUM PENGUKURAN INTENSITAS CAHAYA (LUX) DAN SUHU MENGGUNAKAN SENSOR CAHAYA BH1750 DAN SENSOR SUHU DHT22 BERBASIS MIKROKONTROLER NODEMCU ESP8266 DAN WEBSITE

AULIA, PUTRI and Saleh, Khairul and Supardi, Supardi (2025) RANCANG BANGUN ALAT PRAKTIKUM PENGUKURAN INTENSITAS CAHAYA (LUX) DAN SUHU MENGGUNAKAN SENSOR CAHAYA BH1750 DAN SENSOR SUHU DHT22 BERBASIS MIKROKONTROLER NODEMCU ESP8266 DAN WEBSITE. Undergraduate thesis, Sriwijaya University.

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Abstract

Perkembangan teknologi mikrokontroler telah mendorong terciptanya alat praktikum fisika berbasis Internet of Things (IoT). Dalam studi ini, dirancang sistem pengukuran yang melibatkan sensor cahaya tipe BH1750 untuk intensitas cahaya, sensor suhu tipe DHT22 untuk suhu, dan sensor ultrasonik tipe HC-SR04 untuk jarak, dengan NodeMCU ESP8266 sebagai pengendali utama. Informasi hasil pengukuran ditampilkan pada layar LCD I2C 16x2 dan dikirim secara real-time ke Firebase Realtime Database untuk diakses melalui website. Hasil kalibrasi menunjukkan bahwa sensor cahaya tipe BH1750 memiliki akurasi sebesar 99,80%, dan sensor suhu tipe DHT22 sebesar 98,39%. Eksperimen dilakukan menggunakan berbagai jenis lampu (pijar, CFL, dan LED) dengan jarak antara 15 hingga 75 cm. Ditemukan bahwa nilai intensitas cahaya menurun seiring bertambahnya jarak, sesuai dengan prinsip hukum kuadrat terbalik. Suhu lingkungan sekitar sumber cahaya juga dicatat untuk mengamati pengaruhnya terhadap perubahan intensitas.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	BH1750, DHT22, NodeMCU ESP8266, Firebase, lux, hukum kuadrat terbalik
Subjects:	Q Science > QC Physics > QC350-467 Optics. Light
Divisions:	08-Faculty of Mathematics and Natural Science > 45201-Physics (S1)
Depositing User:	Putri Aulia
Date Deposited:	24 Jul 2025 14:24
Last Modified:	24 Jul 2025 14:24
URI:	http://repository.unsri.ac.id/id/eprint/180476

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