/*
 * Testprogramm
 * Kontrollierbare Spannungsversorgung
 * Arduino 
 * REV. 1.3
 * 15.02.2023
 */
#include <Wire.h> 
#include <LiquidCrystal_I2C.h>
#include <Keypad.h>

const byte ROWS = 4;
const byte COLS = 4;

char hexaKeys[ROWS][COLS] = {
{'1', '2', '3', 'A'},
{'4', '5', '6', 'B'},
{'7', '8', '9', 'C'},
{'*', '0', '#', 'D'}
};
byte rowPins[ROWS] = {9, 8, 7, 6};
byte colPins[COLS] = {5, 4, 3, 2};

Keypad customKeypad = Keypad(makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS);
LiquidCrystal_I2C lcd(0x27, 16, 2); 

String inputString;
long inputInt;

void setup(){
lcd.backlight();
lcd.init(); 

Serial.begin(9600);
}
void loop ()
{
char Taste = customKeypad.getKey();

if (Taste) 
{
  int x =Taste*51;
  analogWrite(11,x);
  
lcd.setCursor(1,0);
lcd.print(Taste);

lcd.setCursor(3,0);
lcd.print("Volt");
}
}