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LiquidCrystal_I2C with NodeMCU I2C. Backlight toggling, but ...

#include <LiquidCrystal_I2C.h> #include <Wire.h> LiquidCrystal_I2C lcd(0x3F, 16, 2); void setup() { Wire.begin(D2, D1); lcd.begin(); lcd.backlight(); ...

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