Note! This app is not made as game controller. This is for robots. This app is the latest version of "Bluetooth Serial Controller". Icon has been changed from the previous version. (renamed again from "BT Serial Controller" ) By using Bluetooth SPP , you can do Wireless Serial Communication with AVR, PIC, Arduino, Raspberry Pi, etc. Please change the button size to fit your device screen size. (PREFERENCE - OPTION - Button Size) You can freely set the name of the button, command, visibility, and repeat. By selecting the controller (A-E) , you can store up to 5 different set-ups. In terminal mode , you can save ＆copy communication logs. By enabling [PREFERENCE - OPTION - CONTROLLER+TERMINAL] , you can see sent & received data. The value of controller can be backup About backup ・ storage location is displayed when you save. ・ The data saved folder "Controller Backup" is the common folder to all controller apps. (ex. WiFi TCP/UDP Controller ) ・ Data type is "CSV". So if NAME or COMMAND contains ",(comma)" , this data can't be read completely. ※Permissions for backup： WRITE_EXTERNAL_STORAGE , READ_EXTERNAL_STORAGE ※Permissions for advertising： INTERNET , ACCESS_NETWORK_STATE