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All Journal JE-Unisla Best : Journal of Applied Electrical, Science and Technology
Dwi Hastuti
Universitas PGRI Adi Buana Surabaya
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Physics

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Design of New Normal Health Protocol Reminder Using Arduino Nano and Ultrasonic Sensor Dwi Hastuti; M. Rizqi Zulkarnain
BEST Vol 3 No 1 (2021): BEST
Publisher : Program Studi Teknik Elektro Universitas PGRI Adi Buana Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/best.vol3.no1.3536

Abstract

Corona virus is a group of viruses that can cause disease in animals or humans. The most common symptoms of COVID-19 are fever, dry cough and feeling tired. Other symptoms that some patients may experience less often include aches and pains, nasal congestion, headache, conjunctivitis, sore throat, diarrhea, loss of taste or smell, rash on the skin, or discoloration of fingers or toes. The Indonesian government urges the public to maintain productivity even in the midst of the ongoing corona virus pandemic with a new order called the new normal, namely by implementing health protocols. PGRI Adi Buana University Surabaya is one of the places where many people do their activities and gather. The existence of this gathering activity can increase the risk of transmitting COVID-19. To prevent transmission, every academic community must always apply the new normal health protocol as recommended by the government, such as wearing masks, washing hands with soap, and maintaining social distancing. So far, health protocol surveillance activities in the campus environment have only relied on the role of security so that it is less effective considering the limited human ability, so a tool is needed to always remind in implementing the new normal health protocol. The tool is in the form of audio using the Ultrasonic HC-SR04 and Arduino Nano sensors. So every object that passes through the sensor will be processed by a microcontroller (Arduino Nano) and then processed into an output in the form of a buzzer. The buzzer that comes out is a voice to remind everyone in the university to implement health protocols.
Prototipe Hidroponik Pintar (Smart-Hydroponic) Tanaman Pakcoy Melalui Website Berbasis IoT dan Mikrokontroler ESP32 untuk Peningkatan Efisiensi Pertanian Rivaldo Josua Jetrin Rolos; Dwi Hastuti
Jurnal JE-UNISLA : Electronic Control, Telecomunication, Computer Information and Power System Vol 11 No 2 (2026): SEPTEMBER
Publisher : Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30736/je-unisla.v11i2.1536

Abstract

Pertanian hidroponik konvensional, terutama dalam budidaya pakcoy, menghadapi tantangan seperti fluktuasi konsentrasi nutrisi dan pH serta kebutuhan pengecekan air secara manual. Ketidakstabilan ini dapat menurunkan kualitas dan hasil panen. Untuk mengatasi masalah ini, dikembangkan sistem smart hidroponik berbasis Internet of Things (IoT) menggunakan mikrokontroler ESP32. Penelitian ini menggunakan metode eksperimental dengan merancang prototipe yang mengintegrasikan sensor suhu (DHT11), pH (PH-4502C), EC (TDS), dan ultrasonik (JSN-SR04T). Data yang dikumpulkan oleh sensor diproses oleh ESP32 dan dikirimkan secara real-time ke antarmuka web untuk pemantauan jarak jauh dan pengendalian pompa secara otomatis. Hasil menunjukkan bahwa sistem mampu membaca parameter lingkungan dengan akurat dan mengontrol pompa dengan baik. Sensor pH menunjukkan akurasi tinggi (error ±0.1), dan sensor ultrasonik akurat pada rentang 20–100 cm (error ±1–2 cm), meskipun kurang optimal di bawah 20 cm. Sensor TDS bekerja baik pada konsentrasi rendah hingga menengah, namun akurasinya menurun drastis di atas 800 ppm. Fitur kontrol manual disediakan untuk mengatasi gangguan akibat koneksi Wi-Fi yang tidak stabil. Kesimpulannya, sistem smart hidroponik ini efektif dalam pemantauan dan pengendalian otomatis budidaya pakcoy. Sistem mempercepat deteksi dan penanganan kondisi lingkungan secara real-time.
Co-Authors M. Rizqi Zulkarnain Rivaldo Josua Jetrin Rolos