Product Introduction

You need accurate distance measurements for your next Arduino project. We bring you the Hc-sr04 Hc Sr04 Arduino Ultrasonic Sensor, a reliable and affordable solution for professionals, students, and home users across Pakistan. This sensor measures distances from 2cm to 400cm with impressive precision. Engineers in Lahore trust the Hc-sr04 Hc Sr04 Arduino Ultrasonic Sensor for robotics and automation projects. Students in Karachi use the Hc-sr04 Hc Sr04 Arduino Ultrasonic Sensor to learn electronics and coding.

Why does the Pakistani market love this sensor? We understand your need for durable, high-performance components without breaking your budget. The Hc-sr04 Hc Sr04 Arduino Ultrasonic Sensor offers exactly that—robust quality at an affordable price point. You avoid expensive laser or infrared modules. You choose a proven, reliable technology that works indoors and outdoors.

Businesses across Islamabad use the Hc-sr04 Hc Sr04 Arduino Ultrasonic Sensor for parking assistance systems and liquid level monitoring. Home users build smart dustbins and automatic hand sanitizers. Professionals integrate it into security alarms and industrial counters. No matter your skill level, this sensor welcomes you with simple operation.

We design the Hc-sr04 Hc Sr04 Arduino Ultrasonic Sensor for harsh Pakistani conditions. It tolerates dust, humidity, and temperature variations. You receive a trigger pin, echo pin, VCC, and ground—nothing complicated. You connect four jumper wires, upload a simple code, and watch live distance readings on your serial monitor. Schools in Rawalpindi include the Hc-sr04 Hc Sr04 Arduino Ultrasonic Sensor in their STEM curriculum. Factories in Faisalabad use it for conveyor belt monitoring.

You save time and money. The sensor consumes low power, works with 5V DC, and delivers stable performance for thousands of readings. We source genuine components, so you never face false triggering or random errors. The Hc-sr04 Hc Sr04 Arduino Ultrasonic Sensor comes with a 40KHz ultrasonic transducer pair—one transmitter, one receiver. This pair emits sound waves and listens for echoes. The microcontroller calculates distance based on the echo return time.

You receive immediate value. Unbox the sensor, connect it to your Arduino UNO or Mega, and start prototyping within minutes. No calibration nightmares, no complex drivers. The Hc-sr04 Hc Sr04 Arduino Ultrasonic Sensor works with Raspberry Pi, ESP32, STM32, and 8051 microcontrollers. This versatility makes it a must-have component in every Pakistani electronics toolkit. Order today and experience why thousands of makers choose our Hc-sr04 Hc Sr04 Arduino Ultrasonic Sensor for their critical projects.

Hc-sr04 Ultrasonic Sensor | Shop Online At Best Prices Pakistan

Key Features 

1. Measures distances from 2cm to 400cm accurately for your Arduino projects.

2. Provides stable readings with a measuring angle of just 15 degrees.

3. Operates on 5V DC power—perfect for standard microcontrollers.

4. Triggers easily with a 10µs TTL pulse signal.

5. Echoes output an active high pulse proportional to the distance.

6. Delivers non-contact distance measurement to protect your surfaces.

7. Consumes only 15mA current during normal operation.

8. Includes both transmitter and receiver modules on a single board.

9. Offers a resolution of 0.3cm for precise DIY applications.

10. Saves your budget with a low-cost yet high-performance design.

11. Works in complete darkness—no light interference affects readings.

12. Fits easily on any breadboard or PCB with standard 0.1″ pin spacing.

13. Connects directly to 5V Arduino pins without level shifters.

14. Reads up to 50 measurements per second for real-time monitoring.

15. Resists ambient noise with a narrow frequency response.

16. Includes mounting holes for secure installation on robots and drones.

17. Provides immediate output without complex initialization sequences.

18. Survives continuous operation for thousands of hours in normal conditions.

19. Compatible with all popular Arduino libraries and sample codes.

20. Ships ready-to-use—no soldering or assembly required.

Advanced Features

1. Automatically rejects echo signals below the 2cm minimum range.

2. Implements automatic gain control for consistent long-distance readings.

3. Supports multi-sensor triggering in a single microcontroller loop.

4. Reduces cross-talk by sequencing multiple sensors sequentially.

5. Integrates with IoT platforms like Blynk and ThingsBoard wirelessly.

6. Enables temperature compensation when paired with a DHT11 sensor.

7. Performs software filtering using moving average algorithms.

8. Boosts accuracy by triggering median of three readings.

9. Handles up to 8 sensors on one Arduino using pin multiplexers.

10. Detects moving objects by comparing consecutive range readings.

11. Achieves sleep mode current below 2mA with proper pin control.

12. Triggers interrupts on echo pin for non-blocking code execution.

13. Maps distance values directly to servo angles for smart cameras.

14. Calibrates offset values through a simple one-time routine.

15. Supports differential measurement for obstacle detection arrays.

16. Emits ultrasonic bursts every 50ms for smooth real-time tracking.

17. Avoids harmonic interference by varying trigger intervals.

18. Provides analog voltage output using external RC filter circuits.

19. Works with PLC systems using a 0-10V converter module.

20. Stores last 10 readings for predictive motion algorithms.

Frequently Asked Questions

Q1: What power supply does the HC-SR04 HC SR04 Arduino Ultrasonic Sensor need?
A1: You need a stable 5V DC supply. Connect the VCC pin to Arduino 5V and GND to ground.

Q2: What is the maximum range of this sensor?
A2: The HC-SR04 HC SR04 Arduino Ultrasonic Sensor measures up to 400cm (4 meters) reliably.

Q3: Does it work with 3.3V microcontrollers like ESP32?
A3: Yes, but use a voltage divider on the Echo pin to protect your 3.3V board.

Q4: How accurate is this ultrasonic sensor?
A4: You get ±3mm accuracy under normal room temperature conditions.

Q5: Can I use multiple sensors together?
A5: Yes, you connect multiple sensors to separate trigger and echo pins.

Q6: Will sunlight affect the HC-SR04 HC SR04 Arduino Ultrasonic Sensor?
A6: No, sunlight or darkness does not affect ultrasonic readings.

Q7: What objects can this sensor detect?
A7: It detects any solid object including wood, metal, plastic, glass, and walls.

Q8: Does it work underwater?
A8: No, the sensor works only in air. Water attenuates ultrasonic waves.

Q9: How do I calculate distance from the echo pulse?
A9: Measure pulse width in microseconds, divide by 58 for cm, or 148 for inches.

Q10: Where can I buy genuine sensors in Pakistan?
A10: We supply authentic HC-SR04 HC SR04 Arduino Ultrasonic Sensors across all major cities.

Where It Can Be Used

1. Obstacle Avoiding Robot – Mount the sensor on a robot car to detect and avoid walls.

2. Smart Dustbin – Open the lid automatically when someone approaches the bin.

3. Parking Sensor System – Alert drivers with beeps when the car gets too close to a wall.

4. Water Tank Level Indicator – Measure liquid levels without touching the water.

5. Touchless Hand Sanitizer Dispenser – Trigger a pump when hands enter the detection zone.

6. Intruder Alarm – Activate a buzzer when someone crosses a preset distance threshold.

7. Height Measuring Machine – Build a digital height scale for clinics or homes.

8. Conveyor Belt Counter – Count products passing on a factory assembly line.

9. Drone Altitude Hold – Maintain stable height for indoor drones.

10. Smart Light Switch – Turn on LEDs when a person walks into a room.

How to Use

You set up the Hc-sr04 Hc Sr04 Arduino Ultrasonic Sensor in just five minutes. Follow these simple steps:

Step 1 – Gather Components
Take your Arduino UNO, the sensor, four female-to-female jumper wires, and a USB cable.

Step 2 – Make Connections
Connect the sensor pins to your Arduino. Attach VCC to 5V, GND to GND, TRIG to digital pin 9, and ECHO to digital pin 10. Double-check each connection before powering on.

Step 3 – Install Arduino IDE
Download the free Arduino IDE from the official website. Install it on your Windows, Mac, or Linux computer.

Step 4 – Write the Code
Open a new sketch. Define TRIG and ECHO pins in the setup function. Set TRIG as OUTPUT and ECHO as INPUT. In the loop, send a 10-microsecond HIGH pulse to TRIG. Read the pulse duration on ECHO using pulseIn(). Calculate distance by dividing the duration by 58 for centimeters.

Step 5 – Upload and Test
Connect your Arduino via USB. Select the correct board and COM port. Click Upload. Open the Serial Monitor at 9600 baud. You see live distance readings every second.

Safety Tips
Never exceed 5V on the VCC pin. Avoid exposing the sensor to direct water splashes. Do not press the transducer surfaces with sharp objects. Keep the sensor away from continuous loud noises that interfere with readings.

Maintenance Guidance
Clean the sensor face weekly with a soft dry cloth. Dust buildup reduces detection range. Check jumper wires for loose connections every month. Store the sensor in an anti-static bag when not in use. Replace the sensor if you notice erratic readings after two years of heavy use.

Advantages

1. You save 70% cost compared to laser distance sensors.

2. You get reliable performance in dusty Pakistani environments.

3. You complete project prototyping in under 15 minutes.

4. You avoid complex calibration routines and drivers.

5. You measure distances regardless of object color or transparency.

6. You achieve low power consumption for battery-operated projects.

7. You easily find replacement units and technical support locally.

8. You integrate the sensor with any microcontroller family.

9. You receive accurate readings without contact or wear.

10. You scale from one sensor to an array of ten units easily.

Disadvantages 

1. Soft surfaces like fabric or foam absorb sound waves and reduce range.

2. Narrow objects such as thin rods or wires may not reflect enough signal.

3. Temperature changes affect sound speed, reducing absolute accuracy.

4. Multiple sensors operating together cause cross-interference without coding.

5. The sensor has a 2cm minimum dead zone, preventing very close measurements.

6. High humidity levels slightly alter ultrasonic wave propagation.

7. The 15-degree beam angle misses small obstacles at long distances.

8. Continuous high-speed readings produce inconsistent values.

9. The sensor cannot distinguish between multiple objects in the beam path.

10. Extreme temperatures above 70°C permanently damage the transducer.

City-Wise Sales Coverage in Punjab

We deliver the Hc-sr04 Hc Sr04 Arduino Ultrasonic Sensor across all major cities in Punjab, Pakistan. You receive your order within 24–48 hours in Lahore, Faisalabad, Rawalpindi, Multan, Gujranwala, Sialkot, Bahawalpur, Sargodha, Rahim Yar Khan, Sheikhupura, Jhang, Dera Ghazi Khan, Gujrat, Okara, Kasur, Sahiwal, Khanewal, Chiniot, Pakpattan, and Vehari. We use trusted courier services and offer cash on delivery for your convenience.

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