Manual IP switch II

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!!I2C display address need preset in firmware{{#define LcdI2Caddress 0x27}}The most common are values 0x27 or 0x3F. If display dont work ** [Upload I2C scanner firmware|https://playground.arduino.cc/Main/I2cScanner] ** Open terminal Ctrl+Shift+M [https://remoteqth.com/img/wiki-bd2-22.png] ** Write detect addres to firmware * Select '''I2C LCD chip''' ** If type of chip is PCF8574'''AT''' *** Install library '''LiquidCrystal_I2C''' *** Disable line {{// #define LCD_PCF8574T}} ** If type of chip is PCF8574'''T''' *** Install library '''LiquidCrystal_PCF8574''' *** Enable line {{#define LCD_PCF8574T}}
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