Description: The LCD Keypad Shield I/O expansion board uses 2 lines of 16 characters LCD. With contrast adjustment and backlighting, Use 5 analog ports to complete the input of 5 buttons. One reset button, the unused IO ports are extended to spare, making full use of the IO port. Occupied digital port: PIN4 (DB4), 5 (DB5), 6 (DB6), 7 (DB7), 8 (RS), 9 (E), 10 (backlight control), analog button port A07 word sleeve to the side 5.5mm Specification: Material: electronic components Product size : approx. 8 x 5.8 x 2cm/ 3.15 x 2.28 x 0.79inch Display screen size: 6.5 x 1.5cm/ 2.56 x 0.59inch Module debugging: Plug the LCD Keypad Shield into the Arduino controller, then download the LCD4Bit_mod.h (right save as) library file to arduino-0015 \hardware\libraries, then compile the following test program and download it to Arduino for the first time. LCD Keypad Shield, first observe whether the LCD displays characters. If there is no display character, the contrast may be incorrect. You can use a one-word screwdriver to adjust RP1 (clockwise rotation), and then adjust to the clear characters. Package Includes: 1 Piece display screen
