Rancang Bangun Sistem Smart Class Lafas (Lamp and Fan Automation System) Berbasis ESP 32 Dengan Sensor PIR dan DHT 22
DOI:
https://doi.org/10.30736/je-unisla.v11i2.1757Abstract
Penelitian ini bertujuan merancang dan mengevaluasi fungsi dasar sistem Smart Class LAFAS (Lamp and Fan Automation System) berbasis ESP32 untuk mengendalikan lampu dan kipas secara otomatis. Sensor PIR digunakan sebagai input deteksi gerakan, sedangkan DHT22 digunakan sebagai input suhu dengan ambang kendali kipas 24°C. Pengujian yang tersedia bersifat uji fungsional prototipe dan mencakup deteksi PIR pada jarak 1, 3, 5, 6, dan 7 m, respons kendali kipas pada pembacaan 20–27°C, serta pengukuran catu daya, stepdown, relay, dan LCD. Pada pengujian tunggal di setiap jarak, PIR mendeteksi gerakan hingga 6 m dan tidak mendeteksi pada 7 m. Kipas berada pada kondisi mati untuk pembacaan suhu di bawah 24°C dan menyala pada pembacaan 24–27°C. Tegangan power supply tercatat 11,53–11,54 V, keluaran stepdown 4,905–4,947 V, dan tegangan VCC LCD 4,805–4,917 V. Data tersebut menunjukkan fungsi otomasi dasar bekerja sesuai logika rancangan. Namun, karena pengujian PIR belum direplikasi, DHT22 belum dibandingkan dengan termometer referensi, dan relay belum diuji waktu switching maupun endurance, penelitian ini tidak menyimpulkan akurasi sensor, repeatability, atau reliabilitas jangka panjang.
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