Program your own LEGO Mindstorms EV3 Bluetooth Remote Control. Text or numeric values will be sent to an EV3 bluetooth mailbox and can be used in the LEGO Mindstorms software. String. Bluetooth data handled as text. Number. Bluetooth data handled numeric. Requirements: Lego Mindstorms EV3 Brick. Program for the EV3 Brick Android 2. 1 or higher.