//#define ECHO 8
//#define TRIG 9
#define VM 18
#define AM 19
#define VD 21

void setup() {
  // put your setup code here, to run once:
  //Serial.begin(115200);
  //Serial.println("Hello, STM32!");
pinMode (VM,OUTPUT);
pinMode (AM,OUTPUT);
pinMode (VD,OUTPUT);  
}

void loop() {
  // put your main code here, to run repeatedly:
  //delay(10); // this speeds up the simulation
digitalWrite(VM, HIGH);
delay(1000);
digitalWrite(VM, LOW);
delay(1000);
digitalWrite(AM, HIGH);
delay(1000);
digitalWrite(AM, LOW);
delay(1000);
digitalWrite(VD, HIGH);
delay(1000);
digitalWrite(VD, LOW);
delay(1000);



}