Overview Nextion I/O Extended Expansion Board
Nextion I/O Extended Expansion Board is the first expansion board for Nextion Enhanced HMI display. Enhanced and higher version Nextion displays supports 8 GPIO, thus we can use this expansion board to control Nextion. The board has 6 buttons, which include Esc, Enter, Left, Right, UP, Down. Also, indicating buzzer and leds are included.
Note: this expansion board can only work with Nextion Enhanced Display, not for basic Nextion Display.