Hellow alle zusammen, :slight_smile: Ich habe ein kleines Programm für mein Bruder geschrieben, dass er endlich mal eine Alarmanlage hat. Also des Programm ist für eine Lichtschranke. Hier der Code: #include <LiquidCrystal.h> const int Laser = 3; const int Piezo = 2; const int Fotowiederstand = …

'lcd' was not declared in this scope

system June 13, 2019, 8:25am 2

LiquidCrystal lcd(8, 9, 4, 5, 6, 7);

void setup() {
  // put your setup code here, to run once:

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