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//Pin connected to latch of Digital Tube Module
int latchPin = A3;
//Pin connected to clock of Digital Tube Module
int clockPin = A4;
//Pin connected to data of Digital Tube Module
int dataPin = A5;
//Pin connected to 595_OE of Digital Tube Module
int OE_595 = A2;
 
const int K1 = 12;
const int K2 = 10;
const int K3 = 8;
const int K4 = A0;
 
const int INPUT1 = 2;
const int INPUT2 = 3;
const int INPUT3 = 4;
const int INPUT4 = 5;
const int INPUT5 = 6;
const int INPUT6 = 7;
const int INPUT7 = 9;
const int INPUT8 = 11;
 
const int RS485_RD = A1;
void setup() {
  // put your setup code here, to run once:
  //set pins to output because they are addressed in the main loop
 
  // pinMode(RS485_RD, OUTPUT);
  pinMode(K1, INPUT_PULLUP);
  pinMode(K2, INPUT_PULLUP);
  pinMode(K3, INPUT_PULLUP);
  pinMode(K4, INPUT_PULLUP);
  pinMode(LED_BUILTIN, OUTPUT);
 
  pinMode(INPUT1, INPUT);
  pinMode(INPUT2, INPUT);
  pinMode(INPUT3, INPUT);
  pinMode(INPUT4, INPUT);
  pinMode(INPUT5, INPUT);
  pinMode(INPUT6, INPUT);
  pinMode(INPUT7, INPUT);
  pinMode(INPUT8, INPUT);
 
  Serial.begin(9600);
}
 
void loop() {
  // put your main code here, to run repeatedly:
  if (!digitalRead(K1)) {
    Serial.println("tombol k1 ditekan");
  }
 
  if (!digitalRead(K2)) {
    Serial.println("tombol k2 ditekan");
  }
  if (!digitalRead(K3)) {
    Serial.println("tombol k3 ditekan");
  }
  if (!digitalRead(K4)) {
    Serial.println("tombol k4 ditekan");
  }
 
  if (!digitalRead(INPUT1)) {
    Serial.println("INPUT1");
  }
 
  if (!digitalRead(INPUT2)) {
    Serial.println("INPUT2");
  }
  if (!digitalRead(INPUT3)) {
    Serial.println("INPUT3");
  }
  if (!digitalRead(INPUT4)) {
    Serial.println("INPUT4");
  }
 
  if (!digitalRead(INPUT5)) {
    Serial.println("INPUT5");
  }
 
  if (!digitalRead(INPUT6)) {
    Serial.println("INPUT6");
  }
  if (!digitalRead(INPUT7)) {
    Serial.println("INPUT7");
  }
  if (!digitalRead(INPUT8)) {
    Serial.println("INPUT8");
  }
}