This is keyboard user interface using LCD 5110 and Arduino. It has 4 navigation buttons and 2 buttons for select the character or erase option. It's look like this:The connection:Arduino Pro Mini - ButtonD2 - LeftD3 - RightD10 - UPD11 - Down D9 - SelectD12 - BackDon't forget add 10K resistor for each digital pin used to the ground (So that there is no floating digital value)I'm using Adafruit_GFX.h library. The LCD 5110 connection...
