Keyestudio LCD1602 expansion shield integrates 1602 LCD display and six buttons into one piece, which is fully compatible with keyestudio UNO R3 control board. It can work just through stacking expansion board on 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 press the different buttons, 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.
Module size: 20.5mm * 41mm
Display capacity: 16* 2 characters
Chip working voltage: 4.5-5.5 V
Working current: 2.0 mA (5.0 V)
Module optimum working voltage: 5.0 V
Character size: 2.95 *4.35 (W * H) mm