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 |
| Echo Output Signal | TTL level signal proportional to distance |
| Dimensions | 45mm x 20mm x 15mm |
| Compatibility | Arduino, Raspberry Pi, STM32 |
| Package Includes | 1x Ultrasonic Sensor Module |
Anonymous
Mar 11, 2026
Rating: 5/5
Perfect for Arduino robotics projects
This sensor works flawlessly with my Arduino Uno. The range is accurate up to about 3 meters in my testing, which is perfect for my obstacle avoidance robot. Setup was incredibly easy using standard libraries.
Anonymous
Mar 05, 2026
Rating: 4/5
Works well after calibration
Out of the box, the readings were slightly off by a centimeter or two, but after adding a small calibration offset in the code, it is very precise. Good build quality for the cost.
Anonymous
Mar 04, 2026
Rating: 4/5
Good value but sensitive to angle
Great sensor for the price. It measures distance reliably, but you need to ensure the target surface is relatively flat and perpendicular to the sensor. Soft materials like cloth can sometimes absorb the sound waves.
Anonymous
Mar 03, 2026
Rating: 5/5
Essential for university projects
Bought five of these for a group project involving automated parking systems. They all performed consistently. The documentation online is plentiful, making it easy to integrate into code.
Anonymous
Mar 03, 2026
Rating: 5/5
Standard choice for a reason
This is the industry standard for a reason. It's cheap, reliable, and easy to find tutorials for. I use it for liquid level detection in tanks and it works perfectly.
Anonymous
Mar 01, 2026
Rating: 5/5
Reliable and robust
I've used these sensors in various environmental conditions indoors and they haven't failed me yet. The response time is fast enough for real-time applications. Highly recommended for beginners.
Q: Does this module work with 3.3V logic levels?
A: The module requires 5V power. However, the Echo pin outputs 5V logic. If connecting to a 3.3V microcontroller, you should use a voltage divider on the Echo pin to prevent damage.
Q: How does temperature affect the accuracy?
A: Sound speed varies with temperature. For high-precision applications, you may want to incorporate a temperature sensor to adjust the speed of sound constant in your calculations.
Q: Is a library required to use this with Arduino?
A: While libraries like NewPing make integration easier, they are not strictly required. You can write your own code using the pulseIn() function to read the echo duration.
Q: Can this sensor measure distances underwater?
A: No, the HC-SR04 uses ultrasonic sound waves which do not propagate effectively from air into water. It is designed for air-based distance measurement only.
Q: What is the minimum distance this module can detect?
A: The minimum measurable distance is approximately 2cm. Objects closer than this may not be detected reliably or may return inconsistent readings.
Universal 5800 Super Glue for Plastic, Metal, Glass, and Wood, 10-Second Fast Curing
$2.01
White Noise Wood Chip Core Grid Scented Candle Wooden Core S-Type Brand Name Candle Container Soy Candle Core Wood
$1.50
Zunjue 100% Cotton Paper Block 300g Watercolor Paper, Fine/Medium Grain, Thickened 80 Sheets, Neutral Acid-Free Journal Paper for Art Students, Beginners, Watercolor, Colored Pencil, Pen, Light Wash, Marker
$27.20
Outdoor Waterproof Dry Bag for Rafting and Creek Walking - Large Capacity Backpack for Swimming, Hiking, Diving, and Flood Rescue
$132.00
Lukang 995 Door and Window Fast-Drying Glass Sealant - Transparent Weather-Resistant Neutral Silicone Structural Adhesive
$222.90
Large Flip-Type Water Draining and Air Drying Machine, Fully Automatic Air Knife Blower for Vegetables, Commercial Continuous Drying Equipment
$15,282.00
Large Capacity Household Quilt Storage Bag - Waterproof and Moisture-Proof Duvet Organizer for Moving, Packing, and Luggage Sorting
$5.88
Scented Candle Aluminum Alloy Turntable 360-Degree Rotating Double-Sided Silent Non-Slip Small Turntable for Cake Decorating and DIY
$30.40
Ceramic Five Oxen Painting Brush Washer – Antique-Style Ink Well for Calligraphy & Traditional Painting
$16.90
Liupintang 3-in-1 Brush Washing Bucket with Palette - Portable Handheld Multi-Function Art Tool for Chinese Painting, Watercolor, and Gouache, Foldable Small Pail
$17.80
ZGT Type Damped Spring Vibration Isolator for Large Equipment such as Chillers and Diesel Generator Sets
$135.00
Shanlian Lake Brush Wool Felt Mat for Calligraphy and Painting, Washable Desk Pad for Beginners
$22.70
New Silicone Data Cable Protector, Anti-Break and Anti-Bite Cord Organizer for Charging Lines and Headphones, Universal Phone Accessory
$5.58
Cafeteria Bulb Vegetable Cutter - Complete Kelp Shredding Production Line, All-in-One Slicing, Dicing, and Shredding Machine
$10,000.00
Electric Water Dispenser Pump for Bottled Mineral Water - Automatic Press-Type Purified Water Pump Manufacturer
$113.00
Heavy-Duty Industrial Wiping Cloths for Auto Painting, Baking, Film Application, Detailing, and Degreasing – Absorbent, Oil-Removing, Lint-Free Paper and Cloth
$120.00
6-Cavity Oval Beehive Silicone Mold for DIY Handmade Soap - Heat-Resistant Non-Stick Large Mold for Milk and Essential Oil Soaps
$4.93
Data Cable Organizer Bag with Zipper for Charging Cables and Adapters - Dustproof Desktop Storage
$5.90
Auby Baby Rattle Toy for 6+ Months, Chewable Wave Drum and Shaker for Newborns and Toddlers
$24.90
Preferred 45L Industrial Pulping Machine Spinach Fresh Pulp Galangal Carrot Tomato Sauce Making Fruit and Vegetable Industry Blender
$7,632.00
KAD Professional Thickened Sketch Blending Stump - Dual-Head Smudging Pen for Art Students
$9.90
Beijing Imported Dental Implant Package - Appointment Booking, X-Ray, and Treatment Plan Included
$1.00
![Huahu [Top Layer Cowhide] Japanese-Style Men's Genuine Leather Belt, Simple Casual Business Wide Belt with Automatic Buckle](https://www.gosteppe.com/cache/small/product/269537/legacy-main-e3e965ff85d9032ca79f72b8.webp)
Huahu [Top Layer Cowhide] Japanese-Style Men's Genuine Leather Belt, Simple Casual Business Wide Belt with Automatic Buckle
$423.00
Wall-Mounted Towel Storage Box Large Capacity for Bathroom
$8.42
Loctite 480/411/403/407/406/414/420/401/415 Heat-Resistant 495 High-Temp 417/416 Instant Adhesive
$26.80
Ulanzi CSS1 Camera Quick-Release Shoulder Strap - Universal Anti-Slip Crossbody Belt for Fujifilm, Sony, and Canon DSLR/Mirrorless Cameras
$109.00
Invisalign Retainer Storage Case Portable Travel Container for Clear Aligners Dentures Orthodontic Appliances Cleaning Q
$6.59
70*275mm Flocked Abrasive Pad Circular Backing Sanding Disc Polishing Sheet Self-Adhesive Scouring Pad Brushed Finish Cloth
$4.05
50/100 Pairs Men's Foot Therapy Short Socks - Odor-Resistant, Low-Cut, Summer Thin, Disposable Street Market Socks
$19.99
Biliansheng No-Shave Hair Transplant - Hairline and Crown Restoration for Men and Women
$100,000.00
![[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)
