Vol 24 No 1 (2023): BULETIN FISIKA

Rancang Rancang Bangun Sistem Pendeteksi Ketinggian Air Jarak Jauh Menggunakan Sensor HC-SR04 dan Modul GSM SIM800L Berbasis Mikrokontroler ATMega 328

I Putu Wahyu Pranata Kusuma Jaya (Unknown)
I Gusti Agung Widagda (Universitas Udayana)
I Gde Antha Kasmawan (Universitas Udayana)

Article Info

Publish Date
30 Oct 2021


A prototype of water level detection has been designed using the HC-SR04 sensor and the GSM SIM800L module based on the ATMega328 Microcontroller. This study aims to monitor the water level through indication media such as LED colors and different buzzer sounds. In addition, the communication medium between the user and the design tool is using SMS. Users can also control the Relay and provide information in the form of current water levels via SMS. The components used to design this system are Arduino Uno, sensor HC-SR04, GSM SIM800L Module, LCD, LED, buzzer and Step-Down regulator. The principle of this system is the system will indicate the water level through predetermined statuses, such as safe, alert and dangerous. Each status has a different LED color and buzzer sound. When the water level reaches the threshold value for each status, the design tool will send a message to the user in the form of the current status and water level. When the water level reaches dangerous status, the relay will turn on and off when the water level reaches safe status. Based on the standard deviation value, the designed tool has a fairly small standard deviation between 0-0.2 cm so that the tool is said to be quite precision. Meanwhile, based on the results of the calibration test between the read distance on the LCD and the ruler, the coefficient of determination is 0.9996 or 99.96% and SMS with the ruler obtained 0.9997 or 99.97%. This indicated that the designed tool has good accuracy.

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Journal Info





Earth & Planetary Sciences Electrical & Electronics Engineering Environmental Science Materials Science & Nanotechnology Physics


The Journal aims to promote the theory and application in the field of physics, and to encourage a vigorous dialogue between scholars and researchers all over the world. It presents original research articles, letters as well as review articles, publishes the latest achievements and developments in ...