Journal of Engineering Research and Reports

Aims: To produce low-cost Radiosonde instruments with high accuracy, which are expected to be used as a reference in developing upper aerial observation instruments so as to reduce observation costs

Study Design:  Design of Radiosonde Based on Arduino Pro Mini Using BME280 Sensor.

Place and Duration of Study: Department of Physics, Udayana University, and Indonesian Agency of Meteorology, Climatology, and Geophysics (BMKG), Region-III Badung, between June 2022 and August 2022.

Methodology: Calibration is done by comparing the output value of the BME280 sensor and the BMKG calibration standard tool. The calibrated parameters are temperature, humidity, and air pressure. The relationship between the measurement value of the design tool and the standard tool is determined by the linear regression method to obtain the correction equation.

Results: Radiosonde instruments based on Arduino Pro Mini using the BME280 sensor have been produced. The measurement accuracy obtained for the temperature parameter is 99.9968% with uncertainty (U₉₅) of ±0.18ºC, the humidity parameter is 99.296% with uncertainty (U₉₅) of ±2.9%RH, the air pressure parameter is 99.99998% with uncertainty (U₉₅) of ±0.15 hPa. The accuracy value indicates that the resulting tool has a good level of accuracy to the standard tool.

Conclusion: In this research, has been produced a Radiosonde instruments at a low-cost with high accuracy and precision, which have been calibrated with BMKG standard tools.