Easy Motion and Gesture Detection by PIR Sensor & Arduino

We wrote an algorithm to detect a simple gesture like increasing or decreasing the volume of a sound player. You can copy the following code and try it. #include "Wire.h" #include "TPA81.h" #include "ssd1306.h" #include "DHT.h" // Create new TPA81 instance TPA81 tpa; #define VCCSTATE SSD1306_SWITCHCAPVCC #define WIDTH 128 #define HEIGHT 64 #define PAGES 8 #define OLED_RST 9 #define OLED_DC 8 #defi