Description
Reviews
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Operating Voltage | DC 5V |
| Operating Current | 15mA |
| Measurement Range | 2cm - 400cm |
| Resolution | 0.3cm |
| Measuring Angle | 15 degrees |
| Trigger Input Pulse | 10uS |
| Dimensions | 45mm x 20mm x 15mm |
| Weight | 10g |
| Interface Type | 4 Pin Header |
| Compatibility | Arduino, STM32, 51 MCU, Raspberry Pi |
Anonymous
Apr 10, 2026
Rating: 5/5
Standard hobbyist sensor
The classic HC-SR04. Reliable for general distance sensing and learning embedded systems.
Anonymous
Apr 08, 2026
Rating: 5/5
Fast shipping
Module arrived well packaged. Tested immediately and it worked out of the box.
Anonymous
Mar 31, 2026
Rating: 5/5
Great for Arduino projects
Works perfectly with my UNO R3. Easy to wire up and plenty of tutorials available online.
Anonymous
Feb 22, 2026
Rating: 5/5
Accurate enough for robotics
Using it for an obstacle avoidance robot. Consistent readings within the specified range.
Anonymous
Feb 14, 2026
Rating: 4/5
Good value
Works well but sensitive to soft surfaces that absorb sound. Good price though.
Q: Does this work with 3.3V logic?
A: It requires 5V power, but echo output is 5V. Use a voltage divider for 3.3V MCUs.
Q: Can I use this underwater?
A: No, this sensor is not waterproof and uses air ultrasonic waves.
Q: How many pins does it have?
A: It has 4 pins: VCC, Trigger, Echo, and Ground.
Q: Is code example included?
A: No, but many libraries exist for Arduino and STM32 online.
Q: What is the minimum distance?
A: The minimum measurable distance is approximately 2cm.
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