Description
Reviews
| Brand | - |
| Category | Electronic Components / Maker DIY / DIY Kits & Electronic Building Blocks |
| Origin | - |
| Operating Voltage | DC 3.3V - 5V |
| Current Consumption | 15mA (Working), |
| Measuring Range | 2cm to 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 |
| Connector Type | 4-Pin Header (VCC, Trig, Echo, GND) |
| Compatibility | Arduino, Raspberry Pi, STM32, ESP8266/ESP32 |
Anonymous
Mar 24, 2026
Rating: 4/5
Good for low altitude sensing
Using this on a small DIY drone for altitude hold. It responds quickly enough for slow movements. Just remember it doesn't work well over soft surfaces like carpets or foam due to sound absorption.
Anonymous
Mar 22, 2026
Rating: 5/5
Reliable and robust
I've bought ten of these for a workshop class. All of them worked out of the box. The wide voltage range is a nice feature if you are switching between 3.3V and 5V logic boards.
Anonymous
Mar 22, 2026
Rating: 4/5
Great value, minor noise issues
For the price, you can't beat it. It works well for school projects. I did notice some jitter in readings when used near a running motor, but adding a simple capacitor fixed that. Highly recommend for beginners.
Anonymous
Mar 17, 2026
Rating: 5/5
Standard component, excellent quality
This is the industry standard ultrasonic sensor for a reason. Consistent performance, durable pins, and accurate measurements. I keep a few in my parts bin at all times.
Anonymous
Mar 11, 2026
Rating: 5/5
Easy to code for
As someone new to electronics, I was worried this would be hard to interface. The documentation online is extensive, and the pulseIn function in Arduino makes reading the distance trivial. Very satisfied.
Anonymous
Mar 06, 2026
Rating: 5/5
Perfect for my robotics project
This sensor works flawlessly with my Arduino Uno. The range is accurate up to about 3 meters in my testing, which is plenty for my obstacle-avoiding robot. Setup was easy using standard libraries.
Q: Does this come with jumper wires?
A: No, this package includes only the HC-SR04 sensor module. Jumper wires and microcontroller boards are sold separately.
Q: What is the minimum detection distance?
A: The minimum measurable distance is approximately 2cm. Objects closer than 2cm may not be detected reliably or may return a constant low value.
Q: Is this sensor waterproof for outdoor use?
A: No, the HC-SR04 is not waterproof. The exposed circuit board and transducers can be damaged by moisture. For outdoor applications, you must house it in a waterproof enclosure with an opening for the sound waves, or look for a specifically waterproof ultrasonic sensor model.
Q: How do I handle multiple sensors on one Arduino?
A: You can connect multiple sensors by assigning unique Trigger and Echo pins for each module in your code. Ensure you trigger them sequentially with a small delay (e.g., 60ms) between measurements to prevent cross-talk where one sensor hears the echo from another.
Q: Can this sensor be used directly with a 3.3V Raspberry Pi GPIO?
A: Yes, the module operates on a wide voltage range of 3-5V. However, while the VCC can be 3.3V, the Echo output may still output 5V logic depending on the specific batch. It is generally recommended to use a voltage divider on the Echo pin when connecting to 3.3V logic boards to be safe.
City Hunter Theme Song Mr. Chui Saxophone Three-Piece Precise Transcription Service
$16.00
![[Deposit Group 12] New Colors: Hugging Bear Matte Low-Mid Heel Lolita Shoes - Sheep Puff with Bear Buckle](https://www.gosteppe.com/cache/small/product/268946/legacy-main-23070b08b8901297c3f91d93.webp)
[Deposit Group 12] New Colors: Hugging Bear Matte Low-Mid Heel Lolita Shoes - Sheep Puff with Bear Buckle
$38.00
Handcrafted Peach Wood and Brass Baby Rattle - Non-Toxic Paint-Free Teething Toy for Infants
$32.00
Car Tire Stone Removal Hook - Debris Cleaning Tool for Wheels
$6.19
Ceramic Rabbit Egg Holder – Creative Irregular Egg Stand for Breakfast or as a Decorative Gift
$33.82
Toilet Tank Side Shelf Bathroom Storage Rack No-Drill Organizer for Bathroom Essentials
$10.40
No-Drill Over-Toilet Storage Rack for Bathroom Restroom Organizer
$8.90
Artsneak Blending Stump for Oil Pastels, Dual-Tip Sponge Brush Art Student Painting Tool Set, Washable and Crumb-Free
$14.20
75X100 Imitation Inkjet Transfer Steel Plate for Date Coding - Custom Logo and Trademark Available
$38.00
Lint-Free Cloth 1009DLE/SLE - Straight/Net Weave for UV Printhead, Screen, Lens Cleaning, Industrial Wiping Cloth
$10.80
Pirelli PZ4 Tires, Sizes 235/245/255/265/285/40/45/50/55 R19/R20/R21/R22
$350.00
Wooden Plaque Carved Signboard for Business Opening, Antique-Style Shop Entrance Header, Custom Engraved Solid Wood Couplets MWU
$182.96
Kumho ES01 Car Tires: Sizes 155/165/175/185/205 with Aspect Ratios 55/60/69 and Rim Diameters 14/15/16/17
$458.00
Mont Marte Paint Brushes, Creative Children's Painting Brush Set (3 Pieces), Tempera Brush Kit for Kids
$6.50
Baohong Watercolor Paper 300g 8K/4K - Wood Pulp A1/A3/K3 350g Fine/Coarse Grain for Watercolor and Oil Pastels 4K
$4.00
Imported IK7 Linear Bearing LM 162837 203242 254059 304564 3552O0 UU
$96.00
Used Car Tires Auto Salvage Tires 155 165 175 185 195 205 215 1U3 14 15 16
$202.00
Magnetic Charging Stand for MIJIA Smart Audio Glasses (Enjoyment Edition) & Jiehuan AI Glasses – Wireless Installation for Type 86 Box
$84.10
Premium DIY Succulent Sand Painting Scented Candle Kit for Holidays and Team Building
$21.20
2018 / New 2024 Rockschool Drum Kit Levels 0-8 Complete with Bonus Audio
$21.98
Hanyue Cordura N66 Rafting Dry Bag - Ultra-Light Waterproof Storage for Outdoor Swimming and Trekking
$35.70
Sketchbook for Casual Drawing, Acrylic Marker and Watercolor Pad, Square Pocket Art Book, Portable Travel Journal with Thick 230g White Cardstock
$5.50
Wenxin Tang Calligraphy Copybook for Beginners, Regular Script Duobao Pagoda, Running Script Lanting Preface, Small Kai Lingfei Jing, Brush Character Cards
$23.80
Resistor NXBU714 for ABB ACS800 Inverter
$560.00
3D Printing Pen for Kids - Edible Malt Sugar Art DIY Kit for Birthdays (Age 6+)
$39.00
Professional Rotating Car Tire and Wheel Cleaning Rack – Effortless Washing Stand
$245.00
Nangong Wenfang Three-Character Classic Small Regular Script Copybook – Transparent Cards for Calligraphy Practice Beginners
$69.00
Over-Washing Machine Shelf, Multi-Function Flip-Top Storage Cabinet for Toilet, Bathroom Floor-Standing Unit with No Drilling Required
$32.88
UGREEN Cable Organizer, Magnetic Desktop Data Wire Fixer, Phone Charging Clip and Cord Collector
$15.90
Compact Manual Water Pump Dispenser for Home Desktop Use – Mini Hand-Press Faucet for Large Water Buckets
$23.10
![[Youxin Electronics] Soil Moisture Meter Detection Module, Soil Moisture Sensor for Intelligent Robot Cars](https://www.gosteppe.com/cache/medium/product/3877/legacy-main-eca7a3fa750966e5dca86bbf.webp)
![[Puzhong Brand Store] 51 Microcontroller Learning Board Development Board Jiangxie Tech STC89C52 DIY Kit](https://www.gosteppe.com/cache/medium/product/1885/legacy-main-0474e8371f211cc54ab452b5.webp)
![[Corrosion-Resistant] DFRobot Capacitive Soil Moisture Sensor Module Dry/Wet Detection](https://www.gosteppe.com/cache/medium/product/3259/legacy-main-2f0d3454b36b32391d263648.webp)
