I want to print something using the A1602 display with I2C shield, but when I print something, everything is white(see attachment). Here is the code, by the way: #include <Wire.h> #include <LiquidCrystal_I2C.h> LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE); // Set the LCD I2C add…

Contrast problem on i2c?

system February 27, 2019, 6:46pm 4

(deleted)

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