1602 LCD Display Screen Interface Adapter Module
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Input and output expansion board LCD Keypad Shield
LCD Keypad Shield input and output expansion board using the 2 line 16
character LCD with contrast adjustment and backlight, the use of an analog port
completed in five key input, a reset button, and extended out of the spare unused
IO port, make full use of the IO port. Occupy any digital port: PIN4 (DB4) 5 (DB5),
6 (DB6), 7 (DB7), 8 (RS), 9 (E), 10 (backlight control), simulation of key port A0 .
(LCD color is not specified, they were shipped.)
The debugging of the module
LCD Keypad Shield, inserted received controller, and then need to download the
LCD4Bit_mod.h(Save as), and then compile the following test procedures and
then downloaded to the initial LCD Keypad Shield, the first observation of the
LCD does not show character, if there is no display character is incorrect contrast,
you can use a flathead screwdriver to adjust RP1 (clockwise rotation), transferred
to clear character can.