Project Blueprint 01 // Intermediate

Smart Ultrasonic Distance Telemetry

A high-precision data acquisition module executing non-contact object tracking using sub-microsecond pulse flight variables.

📋 Hardware Interface Mapping

Component Pin	Vector	Target Uno Pin
HC-SR04 VCC	====>	+5V Rail
HC-SR04 Trig	====>	Digital Pin 9
HC-SR04 Echo	====>	Digital Pin 10
HC-SR04 GND	====>	GND Rail

💻 Production Firmware Code

const int trigPin = 9;
const int echoPin = 10;
long duration;
int distance;

void setup() {
  Serial.begin(9600);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
}

void loop() {
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  
  duration = pulseIn(echoPin, HIGH);
  distance = duration * 0.034 / 2;
  
  Serial.print("Telemetry Data - Distance: ");
  Serial.print(distance);
  Serial.println(" cm");
  delay(250);
}