Code Example Arduino 4. Code Exampl. KY-004 - Button-module (Joy-IT) KY-004 Button-module KY-004 Button-module Contents 1 Picture ... KY-005 - Infrared Transmitter module (Joy-IT) KY-005 Infrared Transmitter module KY-005 Infrared Transmitter module Contents 1 Picture .. KY-006...