Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Operating Voltage | DC 5V |
| Static Current | < 2mA |
| Measuring Range | 2cm - 400cm |
| Resolution | 0.3cm |
| Measuring Angle | 15 degrees |
| Trigger Input Signal | 10µS TTL pulse |
| Dimensions | 45mm x 20mm x 15mm |
| Interface Type | 4-Pin Header (VCC, Trig, Echo, GND) |
| Compatibility | Arduino, Raspberry Pi, STM32, ESP8266 |
| Package Contents | 1 x HC-SR04 Sensor Module |
Anonymous
Mar 30, 2026
Rating: 4/5
Works well after calibration
Initially got some jittery readings, but after adding a simple averaging filter in the code, it became very stable. Good product for the learning curve.
Anonymous
Mar 26, 2026
Rating: 5/5
Reliable and consistent
I've bought ten of these for various prototypes. They are consistent in their readings and handle minor vibrations well. Highly recommended for smart car applications.
Anonymous
Mar 09, 2026
Rating: 4/5
Good budget sensor
Does exactly what it says. It's not industrial grade, but for a university project or hobbyist DIY car, it is more than sufficient. Just make sure you have a stable 5V power supply.
Anonymous
Mar 08, 2026
Rating: 5/5
Perfect for my obstacle avoidance robot
This sensor works flawlessly with my Arduino Uno project. The range is accurate up to about 3 meters in my testing, and the code libraries are easy to find online. Great value for the price.
Anonymous
Mar 05, 2026
Rating: 5/5
Easy to use for beginners
Bought this for my son's science fair project. We found plenty of tutorials online to get it working within an hour. The pins are clearly labeled which helped a lot.
Anonymous
Mar 02, 2026
Rating: 5/5
Best bang for your buck
You cannot beat this price for an ultrasonic sensor. It arrived quickly and was packaged securely. No dead pixels or damaged pins. Will buy again.
Q: How does rain or outdoor humidity affect performance?
A: While the sensor can function outdoors, heavy rain, fog, or extreme humidity can absorb or scatter ultrasonic waves, leading to inaccurate readings. It is best used in dry conditions or indoors.
Q: What is the minimum distance this sensor can detect?
A: The minimum measurable distance is approximately 2cm. Objects closer than this may not be detected reliably or may return invalid readings.
Q: Can this sensor work with a 3.3V microcontroller like the ESP32?
A: Yes, but you need a voltage divider or a logic level converter for the Echo pin, as the sensor outputs 5V logic which can damage 3.3V boards. The Trig pin usually works fine directly.
Q: Is there a library available for Python on Raspberry Pi?
A: Yes, there are several popular libraries such as 'gpiozero' and 'RPi.GPIO' that have built-in support or examples for the HC-SR04 sensor.
Q: Does this module come with jumper wires?
A: No, this package includes only the sensor module itself. Jumper wires are sold separately, but standard female-to-female Dupont wires work perfectly.
UHT Ultra-High Temperature Sterilizer, Room-Temperature Set Yogurt Production Line, Yogurt Processing Equipment, Stirred Yogurt System
$80,640.00
Professional Sketch Blending Kit for Art Students: Gray Tone Pencils, Sponges, Stumps, and Erasers
$4.17
Custom Solid Wood Signboard with Engraved Lettering, Advertising Carved Plaque for Homestays, Tea Rooms, Studios, Wooden Entrance Hanging Sign
$16.90
MOKO Stainless Steel Expandable Dish Drainer - Multi-Function Kitchen Sink Rack for Bowl and Plate Storage
$28.00
WoSporT Factory Direct WST Safety Case 32cm (12.6 inch) - Dustproof, Waterproof, and Impact-Resistant Tool Box
$95.00
South Korea DIO Dental Implant / Implant + Abutment + Crown
$1,580.00
40cm Extended Drill Attachment with Scouring Pad Head for Polishing, Rust Removal, and Marble Countertop Cleaning
$60.00
Authentic Ou Style Tian Kaishu Thousand Character Classic Calligraphy Card for Adult Practice, High-Definition Coated Paper
$55.10
Zer0g Ultra-Light 14g Backpack Waterproof Liner - Polycro Odor-Barrier Pack Liner for Hiking and Trekking
$21.20
Touchmark Liquid Acrylic Markers with Soft Tips, Specialized for Elementary School Art, Ideal Birthday Gift for Children
$18.90
Paper Blending Stump for Sketching - Professional Art Tool with Blade for Highlights, Pastels, and Oil Pastels
$3.74
Wen Zhengming Small Regular Script Love Lotus Essay Brush Tracing Practice Copybook Calligraphy Paper Copying Custom Wholesale for Beginners
$8.80
Heavy-duty Industrial Scouring Pad Roll with Aluminum Oxide for Stainless Steel Polishing and Rust Removal
$57.52
1.06m Leather Slitting Machine – Wide-Range Strip Cutter for Leather, Luggage, and Rubber Materials
$16,250.00
Ceramic Double-Boiler Steaming Bowl with Lid – Ideal for Eggs, Bird's Nest, Custard, and Soup for Home or Commercial Use
$21.11
![[Ya Que You Sheng] DT900 PRO X Calibration File V2 Version EQ Equalization](https://www.gosteppe.com/cache/small/product/269040/legacy-main-a3c0c55ffaafe89c05afced1.webp)
[Ya Que You Sheng] DT900 PRO X Calibration File V2 Version EQ Equalization
$15.00
Ceramic Rabbit Egg Holder, Creative Irregular Egg Stand, Home Breakfast Small Dish, Craft Gift Ornament
$44.78
Hot-Selling Wire Money Tree Bonsai Base – Ceramic Pot for Wealth Attraction Incense
$37.00
Maike Outdoor Sports Waterproof Backpack Wet-Dry Separation Ski Bag Fishing Creek Fins Multi-Function Gear Storage
$152.00
Viral NFC Chip Stickers for Music Wall - Adhesive Read/Write Tags for Song Scanning, Cards, and Photo Frames
$2.38
Rechargeable Generation 2 Personal Air Purifier - Safe Portable Electric Fan for Travel Commuting and Flights
$181.00
Integrated Sink Splash Guard with Silicone Drain Mat - Auto-Draining Countertop Organizer
$23.30
Ultra-Light Aluminum Camping Light Pole – Foldable Mini Lamp Stand for Outdoor Picnics and Tabletop Use
$8.33
bimoz Under-Desk Cable Organizer No-Drill Shelf for Home Office Socket Strip Router Wire Data Cable Fixer Minimalist Wire Winder Dual-Side Mount Ventilated Design
$40.80
Extended Deep-Cut External Thread Tool Holder with Relief Groove for Swiss-Type Lathe HKFF42R6001
$15.50
Meiao Dental Imported Dental Implant Package, Swiss ITI Straumann Implant Abutment, False Teeth, Filling, and Planting
$14,188.00
Assorted Colors Kids' Painting Crayons - Washable Oil Pastels in 12, 18, 24, or 36 Colors for Graffiti and Coloring
$2.47
Fruit and Vegetable Slicer - Stainless Steel Commercial Electric Multi-Function Shredder for Radish, Potato, Cucumber, Pepper, Automatic
$2,880.00
CAAS-Developed Granular Insecticide and Fungicide for Vegetable Gardens – Soil Pest Control and Fertilizer for Enhanced Vegetable Growth and Yield
$13.50
Marie's C6823 Sketch Blending Stumps (3-Pack), Professional Charcoal and Pastel Smudging Tools for Art Students and Beginners, Hard/Small/Highlight Set on Newsprint
$7.48
![[Youxin Electronics] GP2Y0E03 Infrared Distance Sensor Module 4-50cm Range](https://www.gosteppe.com/cache/medium/product/74667/legacy-main-4da8cadc5fc82afe91b124e3.webp)
![[Trial Pack] Xianlang Complete Cat Treat Sticks Meal Packs Main Course Cans Freeze-Dried Cat Food Sample Snacks Gift Set](https://www.gosteppe.com/cache/medium/product/208273/legacy-main-9ec245ebf781f65a434ba854.webp)
