ANALYSIS OF ACCURACY CHARACTERISTICS OF COMPASS APPLICATIONS IN VARIOUS TYPES OF MOBILE PHONES

• Main Author: Vincent, Leonardo
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/73338
• Institution: Institut Teknologi Bandung

<p align="justify">Nowadays, cell phones have many features, one of which is a digital compass. Unlike its predecessor, digital compasses on cell phones rely on a set of sensors, especially the magnetometer, to measure angle readings in a specific location. However, the accuracy offered by the digital compass for mobile phones is still questionable, so it is still unusable in the field of mapping. Research related to the Analysis of the Accuracy Characteristics of the Compass Application on Various Types of Mobile Phones was carried out with the aim of looking at what factors that influence the accuracy of angle readings on a digital compass in mobile phones and the comparison of accuracy of digital compasses between one cell phone with another. The research methods that used in this case include field data collection using five different cell phones, such as iPhone 13, Samsung M20, Vivo Y20S, Xiaomi Redmi Note 10S, and Xiaomi Redmi Note 9 Pro, as well as simulation data using a GY-273 magnetometer base with the Honeywell HMC5883L chip through data recording on the Arduino microcontroller. From this study, the writer found that the best digital compass accuracy is owned by the iPhone 13 and Vivo Y20S, while the worst output is produced by the Xiaomi Redmi Note 9 Pro. These results are influenced by several factors such as sensor resolution and the working principle of the installed magnetometer (based on Hall effect or magnetoresistive), as well as the condition of the cell phone itself. In addition, the results from simulation data show that the fluctuation of angle reading in data without interference and data subjected to magnetic interference has a significant difference. In processing simulation data, the basic principle that works on the acquisition of analog data by the sensor is converted into angle reading data in the form of headings.