#define BUTTON1 25
#define BUTTON2 26
#define BUTTON3 27

#define RELAY1 12
#define RELAY2 13
#define RELAY3 14

void setup() {
  Serial.begin(115200);

  pinMode(BUTTON1, INPUT_PULLUP);
  pinMode(BUTTON2, INPUT_PULLUP);
  pinMode(BUTTON3, INPUT_PULLUP);

  pinMode(RELAY1, OUTPUT);
  pinMode(RELAY2, OUTPUT);
  pinMode(RELAY3, OUTPUT);

  digitalWrite(RELAY1, LOW);
  digitalWrite(RELAY2, LOW);
  digitalWrite(RELAY3, LOW);
}

void loop() {
  digitalWrite(RELAY1, !digitalRead(BUTTON1));
  digitalWrite(RELAY2, !digitalRead(BUTTON2));
  digitalWrite(RELAY3, !digitalRead(BUTTON3));
}