- Nokia 5110 LCD interface.
- Bluetooth module interface.
- I2C communication interface.
- 1 PS2 cross-shaped rocker with buttons, 4 round buttons and 2 small buttons. Provides Arduino joystick and key input expansion.
- The on-board switch can be switched between 3.3V and 5V, and this module can be used for other 3.3V microcontroller platforms, such as STM32.
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