Electronic Theses and Dissertation

Pupuk struvite, yang mengandung magnesium, ammonium, dan fosfat, berperan penting dalam pertumbuhan tanaman dengan sifat lepas lambat (slow release). UPT Laboratorium Terpadu Universitas Syiah Kuala (USK) telah mengembangkan prototype alat produksi pupuk struvite, namun pemantauan proses produksi masih dilakukan secara manual. Penelitian ini bertujuan mengembangkan aplikasi mobile berbasis IoT untuk memantau alat produksi pupuk struvite secara real-time, menggunakan protokol komunikasi MQTT yang efisien dalam pengiriman data dan rendah kebutuhan bandwidth. Aplikasi ini mengintegrasikan sensor-sensor pada alat produksi yang terdiri dari reaktor, penyaring, dan pengering, serta memanfaatkan AWS IoT Core sebagai broker MQTT. Hasil pengujian menunjukkan aplikasi mobile dapat melakukan monitoring dan kontrol berbagai komponen alat secara efektif. Pengiriman data berhasil dilakukan ke topik MQTT, memastikan komunikasi berjalan lancar. Pengujian fungsionalitas dan integrasi aplikasi terhadap alat membuktikan bahwa sistem berfungsi dengan baik. Selain itu, hasil usability testing dengan metode System Usability Scale (SUS) menghasilkan skor rata-rata 77,75, yang menunjukkan aplikasi memiliki tingkat kegunaan yang baik dengan kategori "Grade B". Pengembangan lebih lanjut disarankan untuk menambah fitur riwayat proses produksi dan peningkatan fitur lain yang mendukung kebutuhan pengguna.


Kata kunci: pupuk struvite, IoT, MQTT, monitoring, aplikasi mobile

Struvite fertilizer, which contains magnesium, ammonium, and phosphate, plays a significant role in plant growth with its slow-release properties. The Integrated Laboratory Unit at Universitas Syiah Kuala (USK) has developed a prototype for struvite fertilizer production, but the monitoring process is still conducted manually. This research aims to develop an IoT-based mobile application for real-time monitoring of the struvite fertilizer production equipment, utilizing the MQTT communication protocol, which is efficient in data transmission and has low bandwidth requirements. The application integrates sensors on the production equipment, which consists of a reactor, filter, and dryer, and uses AWS IoT Core as the MQTT broker. The testing results demonstrate that the mobile application can effectively monitor and control various components of the equipment. Data transmission to the MQTT topic was successful, ensuring smooth communication. Functional and integration testing of the application with the equipment proved that the system works well. Additionally, the results of the usability testing using the System Usability Scale (SUS) method produced an average score of 77.75, indicating that the application has a good level of usability with a "Grade B" category. Further development is recommended to add features such as a production process history and other improvements to meet user needs. Keywords: struvite fertilizer, IoT, MQTT, monitoring, mobile application