Combination of Hardware and Microservices-based VR Game Controller using Mahony Filter

The development of the world of virtual reality (VR) is currently happening, but these developments can only be reached by some people because of the high cost of the technology. Therefore, in this study, we would like to make a cheap gyroscope-based VR controller (costs around 22 USD) that can be used by everyone who has an android smartphone. This study used ESP32 as a microcontroller and gestures are needed from the user's hand in order to control the character. Moreover, VR controller communication with an android smartphone used WiFi where ESP32 acts as an access point and sends data in the form of JSON (JavaScript Object Nation) string through UDP (User Datagram Protocol) protocol. The filter process by using mahony filter on ESP32, the test results show a small response time of 33 ms, so that between the user's hand movements and character movements do not occur delay. The current generated is quite large at 155.75 milliamps based on Wifi transmitted.