Data Sheet
Guide  V1.0     
Email: keen@elecrow.com    Web: www.elecrow.com  ---Designed by Elecrow Keen 
76 
Breadboard 
1 
Jumper wires 
Several 
Connection diagram 
UNO R3       LCD1602_IIC 
GND    ->    GND 
+5V     ->    VCC 
SDA    ->    A4 
SCL     ->    A5 
Compile and upload 
Tips: Refer to the operation demo (Step4 to Step8). 
If you have added the library, skip it. 
Otherwise, you need to add the LiquidCrystal_I2C to the Arduino library file directory, 
otherwise the compiler does not pass. Please refer to ‘How to add library files’. 
If the LCD does not display or brightness is not enough, please adjusted the potentiometer. 










