Features: Add RF- interface for nRF24L01 Add 5110 LCD-interface, which is very convenient for game development. Add Bluetooth-compatible modules interface to facilitate Bluetooth-compatible wireless serials communication. Add an I2C communication interface to facilitate the connection of I2C devices At the same-time, JoyStick Shield has a cross-rocker with button, four circular button, and two small button. Provides input extensions for with rocker-and keys inputs. On-board switches can be switched between 3.3V and 5V, and this modules can be used on other 3.3V microcontroller platforms, such as STM-32. Specifications: Material:PCB Note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x JoyStick Shield