* Connectez Pi ground to the ground rail of the breadboard. From the ground rail connect the other outer lead of the potentiometer, LCD pin 1 (VSS), and LCD pin 5 (R/W). | * Connectez Pi ground to the ground rail of the breadboard. From the ground rail connect the other outer lead of the potentiometer, LCD pin 1 (VSS), and LCD pin 5 (R/W). |