Во первых подключаем
* LCD RS pin to digital pin 12
* LCD Enable pin to digital pin 10
* LCD R/W pin to digital pin 11
* LCD D4 pin to digital pin 5
* LCD D5 pin to digital pin 4
* LCD D6 pin to digital pin 3
* LCD D7 pin to digital pin 2
* 10K resistor:
* ends to +5V and ground
* wiper to LCD VO pin (pin 3)
1&16 gnd
2&15 +5v
LiquidCrystal lcd(12, 11, 10, 5, 4, 3, 2);
Вот только так получилось запустить