PERANCANGAN PROTOTIPE ALAT INTERNET OF THINGS (IOT) UNTUK PEMANTAUAN KONDISI LINGKUNGAN PADA RUANG PENYIMPANAN BAWANG MERAH MENGGUNAKAN ESP32, MQ-135 DAN DHT22
Keywords:
Internet of Things, ESP32, MQ-135, DHT22, bawang merah, monitoring, Arduino IoT CloudAbstract
Bawang merah merupakan komoditas hortikultura yang rentan mengalami penurunan mutu selama penyimpanan akibat perubahan suhu, kelembapan, dan kualitas udara. Pemantauan secara manual memiliki keterbatasan dalam menyediakan informasi kondisi lingkungan secara kontinu dan real-time. Penelitian ini bertujuan merancang dan mengimplementasikan prototipe Internet of Things (IoT) untuk memantau kondisi lingkungan ruang penyimpanan bawang merah menggunakan ESP32, sensor DHT22, dan MQ-135 yang terintegrasi dengan Arduino IoT Cloud. Penelitian menggunakan metode prototyping yang meliputi analisis kebutuhan, perancangan, implementasi, pengujian, dan evaluasi sistem. Sensor DHT22 digunakan untuk mengukur suhu dan kelembapan, sedangkan MQ-135 digunakan untuk mendeteksi perubahan kualitas udara berdasarkan nilai Analog to Digital Converter (ADC). Data sensor diproses oleh ESP32 dan dikirimkan melalui jaringan Wi-Fi ke Arduino IoT Cloud untuk ditampilkan pada dashboard berbasis web dan Android serta digunakan sebagai dasar klasifikasi kondisi ruangan. Hasil pengujian menunjukkan bahwa sistem mampu membaca dan mengirimkan data sensor secara kontinu dengan interval 2 detik. Sensor DHT22 menghasilkan pembacaan suhu pada rentang 29,6–30,1 °C dan kelembapan 71,2–71,9% RH, sedangkan sensor MQ-135 menghasilkan nilai 234–421 ADC dan dapat digunakan sebagai indikator relatif perubahan kualitas udara. Sistem juga berhasil menampilkan data secara real-time, mempertahankan koneksi ESP32 dengan Arduino IoT Cloud, serta mengirimkan notifikasi ketika kondisi ruangan mencapai kategori bahaya. Dengan demikian, prototipe yang dikembangkan dapat digunakan sebagai sistem pemantauan dan peringatan dini terhadap perubahan kondisi lingkungan pada ruang penyimpanan bawang merah secara jarak jauh.
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