int led = 3;
int led2 = 4;
int tomb = 8;
int tomb2 = 9;
bool t1;
bool t2;

void setup() {
  Serial.begin(9600);
  pinMode(led, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(tomb, INPUT);
  pinMode(tomb2, INPUT_PULLUP);
}

void loop() {
  t1 = digitalRead(tomb);
  t2 = digitalRead(tomb2);
  digitalWrite(led, t1);
  digitalWrite(led2, t2);
  Serial.print("nilai pot = ");
  Serial.println(analogRead (A0));
}