Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Model Options | HC-SR04, US-100, US-015 |
| Operating Voltage | DC 5V |
| Static Current | < 2mA |
| Measuring Range | 2cm - 400cm |
| Resolution | 0.3cm |
| Measuring Angle | 15 degrees |
| Trigger Input Signal | 10µS TTL pulse |
| Interface Type | 4-Pin (VCC, Trig, Echo, GND) |
| Dimensions | 45mm x 20mm x 15mm |
| Compatibility | Arduino, Raspberry Pi, STM32, ESP8266 |
Anonymous
Mar 24, 2026
Rating: 5/5
US-100 version has extra features
I specifically ordered the US-100 model because it supports UART mode in addition to the standard trigger/echo mode. This saved me GPIO pins on my project. Highly recommended for advanced users.
Anonymous
Mar 23, 2026
Rating: 5/5
Great for learning embedded systems
Bought a pack of five for my university lab. All units worked out of the box. The documentation online is plentiful, making it very easy for beginners to get started with ultrasonic ranging.
Anonymous
Mar 19, 2026
Rating: 4/5
Good sensor, check your voltage
Works well for obstacle avoidance. Just remember this is a 5V module, so if you are using a 3.3V microcontroller like some ESP boards, you need a logic level converter. Otherwise, it performs as expected.
Anonymous
Mar 08, 2026
Rating: 5/5
Perfect for Arduino robotics projects
I bought the HC-SR04 version for my line-following robot. The distance readings are consistent and easy to interface with Arduino using standard libraries. Great value for the price.
Anonymous
Mar 04, 2026
Rating: 5/5
Fast shipping and good packaging
The modules arrived well-protected in anti-static bags. I tested the HC-SR04 immediately, and the accuracy within the 2cm to 400cm range is impressive for such a low-cost component.
Anonymous
Mar 02, 2026
Rating: 4/5
Reliable but sensitive to angle
The sensor works great for detecting walls and large objects. However, be aware that soft materials or angled surfaces can absorb or deflect the sound waves, leading to occasional missed readings. Typical for ultrasonic tech.
Q: What is the difference between HC-SR04 and US-100?
A: While both perform ultrasonic ranging, the US-100 offers additional functionality including UART serial communication and temperature compensation for higher accuracy. It also allows selection between 3.3V and 5V logic levels via onboard jumpers.
Q: Does this work underwater?
A: No, these modules are designed for air usage only. Ultrasonic waves behave differently in water, and the electronics are not waterproof. Submerging them will damage the sensor.
Q: Is there a library available for Python?
A: Yes, if you are using a Raspberry Pi, popular libraries like 'gpiozero' have built-in support for the HC-SR04. For other platforms running Python, you can easily write a script using the RPi.GPIO or similar packages to handle the timing pulses.
Q: How many sensors can I connect to one Arduino Uno?
A: You can connect multiple sensors limited only by the number of available digital I/O pins. Each sensor requires two pins (Trigger and Echo). If you run out of pins, you can multiplex the Trigger lines or use software serial libraries.
Q: Can I use this directly with a Raspberry Pi 4?
A: The HC-SR04 operates at 5V logic levels, while the Raspberry Pi GPIO pins are 3.3V. You must use a voltage divider or a logic level converter on the Echo pin to prevent damaging your Pi. The US-100 module can be configured for 3.3V operation via jumper caps.
Kimberly-Clark 41412 WYPALL X70 All-Purpose Wipes - Oil/Absorbent/Solvent Resistant Shop Towels
$110.00
EMG 60/85/81/81TW/89/89R Active Dual-Coil Guitar Pickups - Cuttable and Ready to Install
$910.00
Retainer Storage Case with Mirror for Cleaning and Soaking Portable Orthodontic Aligner Box
$24.93
Suitable for 195/55R15 & 195/60R15 Used Tires Year-Round Supply Low Price Guaranteed Quality
$80.00
Sink Drain Rack Corner Hanging Basket - Kitchen Sponge and Cloth Organizer, Multi-Function Home Storage Solution
$13.73
Magnetic Refrigerator Side Storage Rack - No-Drill Wall Organizer for Spices and Utensils
$9.10
Multi-Function Car Tire Stone Removal Hook Tool for Picking and Digging Out Debris
$7.35
Suction Cup Sink Strainer - Disposable Kitchen Drain Filter for Food Scraps and Waste
$14.30
Kimberly-Clark Wiper Paper, Industrial Cleaning Wipes for Oil and Grease, Factory & Laboratory Use
$963.52
Loose Gold Rutilated Quartz Beads, Donghai Agate, Chalcedony, Jade, Cat's Eye, Titanium Crystal, Aquamarine, White and Yellow Crystal Single Beads for Bracelets
$8.42
Faucet Drain Mat, Non-Slip Countertop Pad for Kitchen and Bathroom, Splash-Proof Sink Organizer, Thickened Mold-Resistant Silicone Mat
$3.78
New Pirelli Tire 255/40R20 101W AO PZERO PZ4 with Silent Cotton Original Fit for Audi A6L
$1,358.00
Oriental Pearl Dual Porcelain Jar Gift Set: Green Tea, Black Tea, Jin Jun Mei, Pu'erh Loose Leaf Tea in Porcelain Jars
$149.00
Purified Water Bucket Stand Inverted Water Dispenser Pump Simple Mineral Water Drinking Machine Press Pump
$10.80
New Children's Gouache Paint Brushes DIY Hand-Painted Graffiti Art Class Watercolor Acrylic Paint Brushes Bristle Round Tip Brush
$6.41
Natural Clear Quartz Fully Clean Untreated Faceted Round Rice Beads - For Women's Bracelets, Spacer Beads, and DIY Crafts
$6.63
Sponge Brushes for Kids' Crafts and Creative Painting - Student Art Stamping Tools, DIY Sponge Paintbrushes
$13.86
Jiuchenggong Liquan Ming Tang Dynasty Ouyang Xun Yao Mengqi Copybook, Regular Script Brush Calligraphy Workbook, 3 Volumes, 188 Pages
$17.90
Shaped Watercolor Paper Ticket Stubs - Blank Postage Stamp Bookmarks with Serrated Edges, Thickened 300g Premium Cotton Pulp, Fine Texture for Art Hand Painting, Easy Blending, High Absorbency, Wrinkle-Resistant - Perfect for Postcards and Creative Cards
$9.85
Naitong Automatic Retractable Air Hose Reel with PU Braided Hose for Pneumatic Tools and Car Detailing
$119.00
Premium Wall-Mounted Aromatherapy Empty Bottle – 100ML Plastic Square Diffuser Bottle with Wall-Mount Adhesive Sticker
$2.98
Leyingfang Floating Pen for Kids' Water Drawing, Colorful Water-Soluble Suspended Markers, Erasable Watercolor Pens
$13.80
Loose Rose Quartz Beads, Donghai Agate, Chalcedony, Jadeite, and Madagascar Pink Crystal for DIY Jewelry Making
$6.72
Expandable Stainless Steel Sink Rack, Multi-Function Kitchen Drain Board for Fruits, Vegetables, and Utensils
$14.90
Transparent Retainer Case Aligner Storage Box Portable Carry-On Squeeze Bag Orthodontic Appliance Rubber Band Cleaning Box
$18.50
Transparent Data Cable Organizer Bag for Travel - Portable Multi-Use Visible Storage for Digital Chargers and Cable Management
$7.36
Finished Seal Calligraphy Finished Stone Stamp Sellos Chines
$108.58
Chunfei Grocery Store Commuter Hard Fork Low-Beam Mountain Bike for Urban Roads, Suburbs, School, and Outings
$2,247.00
6-Cavity Large Square French Flower DIY Soap Silicone Mold for Essential Oil and Milk Soap
$4.93
Home Balcony Vegetable Planter - Self-Watering Plastic Pot for Strawberries and Succulents
$28.00
![[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)
