รายละเอียดสินค้า

The LCD Keypad Shield I/O expansion board uses 2 lines of 16 characters LCD with contrast adjustment and backlight. I use an analog port to complete the input of 5 buttons. One reset button, the unused IO ports are expanded and used. Make full use of the IO port. Occupied digital ports: PIN4 (DB4), 5 (DB5), 6 (DB6), 7 (DB7), 8 (RS), 9 (E), 10 (backlight control), analog button
port A0.
Module debugging:
Plug the LCD Keypad Shield into the controller, then download the LCD4Bit_mod.h (right-click save as) library file to arduino-0015\hardware\libraries, then compile the following test program and download it to the first time, use the LCD Keypad for the first time. Shield, first observe whether the LCD displays characters. If there is no display character, it may be that the contrast is not correct. You can use a one-word screwdriver to adjust RP1 (clockwise rotation), and adjust to a clear character.
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# LCD #Keypad #Shield #LCD1602