HC-SR04 Ultrasonic Module for Arduino – Obstacle Detection & Range Finder
Original price was: ₹90.00.₹52.00Current price is: ₹52.00.
The HC-SR04 Ultrasonic Sensor is a popular distance-measuring device that uses ultrasonic waves to determine the distance to an object. It’s widely used in robotics, obstacle avoidance systems, and other proximity-sensing applications.
| Discount | Quantity | Price/Pc |
|---|---|---|
| Soft Discount | 5 - 10 | ₹46.80 |
| Medium Discount | 11 - 20 | ₹41.60 |
| Heavy Discount | 21 - 50 | ₹36.40 |
Key Features
-
Operating Voltage: 5V DC
-
Measuring Range: 2cm – 400cm (~4m)
-
Accuracy: ~3mm
-
Operating Frequency: 40kHz
-
Trigger Input Pulse Width: 10µs
-
Echo Pulse Output: Proportional to distance
Pin Configuration
| Pin | Function |
|---|---|
| VCC | 5V Power Supply |
| Trig | Trigger (Input) – Sends ultrasonic pulse |
| Echo | Echo (Output) – Receives reflected pulse |
| GND | Ground |
How It Works
-
Trigger Pulse: Send a 10µs HIGH pulse to the Trig pin.
-
Ultrasonic Burst: The sensor emits an 8-cycle ultrasonic burst at 40kHz.
-
Echo Pulse: The Echo pin goes HIGH until the reflected sound is detected.
-
Distance Calculation:
-
Measure the duration of the HIGH pulse on Echo.
-
Distance (cm) =
(Echo Pulse Time × Speed of Sound) / 2-
Speed of sound ≈ 343 m/s (or 0.0343 cm/µs)
-
Formula: Distance (cm) = (Pulse Time (µs) × 0.0343) / 2
-
Simplified: Distance = Pulse Time / 58 (for cm)
-
-
Related products
-
TSOP38238 IR Receiver Module KY-022 – 38kHz Infrared Remote Control Sensor for Arduino/Raspberry Pi (3.3V-5V)
₹30.00Add to cartCompact 38kHz infrared receiver for Arduino/Raspberry Pi projects. Works with TV/DVD/AC remotes (NEC, Sony, RC5 protocols). Features noise immunity, 3.3V-5V operation, and simple 3-pin connection. Perfect for smart home control, robotics, and DIY automation.
Key Specs:
• 38kHz frequency
• 2.5V-5.5V range
• 45ft reception
• Active-LOW output -
Digital IR Sensor Module for Arduino – Obstacle & Line Detection (3-Wire)
₹30.00Add to cartA versatile, high-performance sensor for obstacle detection (2-30cm) and precise line tracking. Features adjustable sensitivity, digital output, and 3.3V-5V compatibility—perfect for robotics, automation, and STEM projects. Compact, reliable, and easy to integrate with Arduino, Raspberry Pi, and other microcontrollers.
Key Features:
✔ Dual-mode (obstacle/line detection)
✔ Adjustable detection range
✔ Fast <10ms response
✔ 3-pin plug-and-play setupIdeal for DIY robots, smart cars, and industrial applications.
Reviews
There are no reviews yet.