How to Use Ultrsonik coba coba: Examples, Pinouts, and Specs

The Ultrsonik Coba Coba is a type of ultrasonic sensor designed for measuring distances by emitting ultrasonic waves and detecting their reflection. It is widely used in applications requiring non-contact distance measurement, such as robotics, obstacle detection, liquid level sensing, and industrial automation. Its ability to provide accurate and reliable measurements makes it a versatile component for various projects.

• Operating Voltage: 5V DC
• Operating Current: < 15mA
• Measuring Range: 2 cm to 400 cm
• Accuracy: ±3 mm
• Operating Frequency: 40 kHz
• Trigger Input Signal: 10 µs TTL pulse
• Echo Output Signal: TTL pulse proportional to distance
• Dimensions: 45 mm x 20 mm x 15 mm

1. Power the Sensor: Connect the VCC pin to a 5V DC power source and the GND pin to the ground.
2. Trigger the Sensor: Send a 10 µs HIGH pulse to the TRIG pin to initiate a measurement.
3. Read the Echo: Measure the duration of the HIGH pulse on the ECHO pin. This duration is proportional to the distance of the object.
4. Calculate Distance: Use the formula: [ \text{Distance (cm)} = \frac{\text{Pulse Duration (µs)}}{58} ] Alternatively, for distance in inches: [ \text{Distance (in)} = \frac{\text{Pulse Duration (µs)}}{148} ]

• Ensure the sensor is mounted securely to avoid vibrations that may affect accuracy.
• Avoid placing the sensor near ultrasonic noise sources, as they may interfere with measurements.
• Use a capacitor (e.g., 10 µF) across the VCC and GND pins to stabilize the power supply.
• For best results, ensure the target object has a flat surface and is perpendicular to the sensor.

// Ultrsonik Coba Coba Distance Measurement Example
// This code measures distance using the Ultrsonik Coba Coba sensor and displays
// the result on the Serial Monitor.

const int trigPin = 9; // TRIG pin connected to digital pin 9
const int echoPin = 10; // ECHO pin connected to digital pin 10

void setup() {
  pinMode(trigPin, OUTPUT); // Set TRIG pin as output
  pinMode(echoPin, INPUT);  // Set ECHO pin as input
  Serial.begin(9600);       // Initialize serial communication at 9600 baud
}

void loop() {
  // Send a 10 µs HIGH pulse to the TRIG pin
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);

  // Measure the duration of the HIGH pulse on the ECHO pin
  long duration = pulseIn(echoPin, HIGH);

  // Calculate the distance in centimeters
  float distance = duration / 58.0;

  // Print the distance to the Serial Monitor
  Serial.print("Distance: ");
  Serial.print(distance);
  Serial.println(" cm");

  delay(500); // Wait for 500 ms before the next measurement
}

1. No Output or Incorrect Readings:

   • Ensure the sensor is powered with 5V DC and the connections are secure.
   • Verify that the TRIG and ECHO pins are connected to the correct microcontroller pins.
   • Check for any obstacles or reflective surfaces that may interfere with the ultrasonic waves.

2. Unstable or Fluctuating Measurements:

   • Add a capacitor (e.g., 10 µF) across the VCC and GND pins to filter noise.
   • Ensure the sensor is not exposed to strong ultrasonic noise sources.

3. Short Measuring Range:

   • Ensure the target object is within the sensor's range (2 cm to 400 cm).
   • Use objects with flat and hard surfaces for better reflection of ultrasonic waves.

Q1: Can the Ultrsonik Coba Coba measure distances through transparent materials like glass?
A1: No, the sensor may not work reliably through transparent materials as ultrasonic waves may pass through or scatter.

Q2: What is the maximum angle of detection for the sensor?
A2: The sensor has a detection angle of approximately 15 degrees. Ensure objects are within this angle for accurate measurements.

Q3: Can I use the sensor with a 3.3V microcontroller?
A3: The sensor requires a 5V power supply. If using a 3.3V microcontroller, a level shifter is recommended for the TRIG and ECHO pins.