Keyestudio 16x2 LCD and Keypad Shield White Text Blue Backlight
The keyestudio LCD1602 expansion shield integrates a 16x2 LCD display and six buttons onto one board, which is fully compatible with the keyestudio UNO R3 control board. It works just by stacking expansion board onto the keyestudio UNO R3 control board, which is very easy and convenient.
There are two modes of communication between the 1602 LCD display and keyestudio UNO R3 control board, which are the 8-bit connection method and the four-bit connection method. The expansion board belongs to the four-bit connection method by default.
There are six buttons on the expansion board, in which for five control buttons and a reset button. Five control buttons are connected to analog port A0, and when you press the different buttons, the analog port A0 will output different simulation values. The expansion board has a potentiometer that can be used to adjust the backlight of the display.