Evaluation of GY271 and GY273 Sensor Performance in Measuring Ocean Current Direction

Abstract

This study compares the performance of the GY271 and GY273 compass sensors in measuring ocean current direction at Dompak Lama Pier, Tanjungpinang, Riau Islands. The system utilizes an ESP32 microcontroller to record real-time data, store it on an SD card. Two days of testing revealed an average accuracy of 97.9% for GY271 and 98.29% for GY273, with ANOVA analysis indicating no significant differences in most measurements. Both sensors remain reliable for ocean current direction measurements with proper maintenance and calibration.