A
Anonymous
Mar 12, 2026
Rating: 3/5
Sensitive to noise
Works okay but struggled in a noisy environment. Fine for indoor use.
Description
Ultrasonic Sensor Module HC-SR04 compatible with Arduino and Raspberry Pi
Reviews
Attributes
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Operating Voltage | 5V DC |
| Current Consumption | 15mA |
| Working Frequency | 40Hz |
| Measuring Range | 2cm - 400cm |
| Measuring Angle | 15 degrees |
| Trigger Input | 10uS TTL pulse |
| Echo Output | TTL level signal |
| Dimensions | 45mm x 20mm x 15mm |
| Weight | 10g |
| Interface | 4 Pin Header |
5 reviews
A
Anonymous
Mar 09, 2026
Rating: 5/5
Fast delivery
Package arrived quickly. Sensor was well protected in anti-static bag.
A
Anonymous
Feb 27, 2026
Rating: 5/5
Reliable measurement
Tested up to 3 meters accurately. Great for obstacle avoidance.
A
Anonymous
Jan 31, 2026
Rating: 4/5
Good value
Sensor works well but requires a voltage divider for 3.3V logic.
A
Anonymous
Jan 17, 2026
Rating: 5/5
Perfect for robotics
Works exactly as described. Easy to interface with Arduino Uno.
5 FAQ
Q: Is there a library available?
A: Yes, many open-source libraries exist for Arduino and Raspberry Pi.
Q: Can I use this directly with 3.3V GPIO?
A: We recommend a voltage divider for the Echo pin when using 3.3V boards.
Q: Does it work outdoors?
A: It can, but wind and temperature may affect accuracy.
Q: Can I connect multiple sensors?
A: Yes, but ensure trigger and echo pins are managed separately in code.
Q: What is the accuracy?
A: Typically within 3mm under ideal conditions.
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