Radar code's

 Here is a sample Arduino code for a radar system using an ultrasonic sensor and a 5V adapter:

#include <Servo.h>

#define TRIGGER_PIN 4

#define ECHO_PIN 5

#define MAX_DISTANCE 200 // Maximum range of the ultrasonic sensor

#define SERVO_PIN 9

#define SERVO_MIN_ANGLE 0

#define SERVO_MAX_ANGLE 180

#define SERVO_SWEEP_DELAY 15 // Delay between each servo position change

Servo servo;

int servoAngle = SERVO_MIN_ANGLE;

void setup() {

  Serial.begin(9600);

  pinMode(TRIGGER_PIN, OUTPUT);

  pinMode(ECHO_PIN, INPUT);

  servo.attach(SERVO_PIN);

}

void loop() {

  // Rotate the servo back and forth

  for (int i = SERVO_MIN_ANGLE; i <= SERVO_MAX_ANGLE; i++) {

    servo.write(i);

    delay(SERVO_SWEEP_DELAY);

    int distance = getDistance();

    if (distance > 0 && distance <= MAX_DISTANCE) {

      // Target detected, print the distance and angle

      Serial.print("Distance: ");

      Serial.print(distance);

      Serial.print(" cm, Angle: ");

      Serial.println(i);

    }

  }

  for (int i = SERVO_MAX_ANGLE; i >= SERVO_MIN_ANGLE; i--) {

    servo.write(i);

    delay(SERVO_SWEEP_DELAY);

    int distance = getDistance();

    if (distance > 0 && distance <= MAX_DISTANCE) {

      // Target detected, print the distance and angle

      Serial.print("Distance: ");

      Serial.print(distance);

      Serial.print(" cm, Angle: ");

      Serial.println(i);

    }

  }

}

int getDistance() {

  digitalWrite(TRIGGER_PIN, LOW);

  delayMicroseconds(2);

  digitalWrite(TRIGGER_PIN, HIGH);

  delayMicroseconds(10);

  digitalWrite(TRIGGER_PIN, LOW);

  long duration = pulseIn(ECHO_PIN, HIGH);

  int distance = duration * 0.034 / 2; // Calculate the distance in cm

  return distance;

}