Description
Reviews
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Operating Voltage | DC 5V |
| Operating Current | 15mA |
| Measuring Range | 2cm - 400cm |
| Measuring Angle | 15 Degrees |
| Trigger Input Signal | 10uS TTL pulse |
| Echo Output Signal | TTL level signal |
| Board Dimensions | 45mm x 20mm x 15mm |
| Weight | 10g |
| Operating Temperature | -15°C to 70°C |
| Interface Type | 4-Pin Header (VCC, Trig, Echo, GND) |
Anonymous
Apr 13, 2026
Rating: 5/5
Perfect for Robotics
Used this for my line follower robot obstacle avoidance system. Works perfectly with Arduino Uno. Very reliable distance readings.
Anonymous
Mar 25, 2026
Rating: 4/5
Good but sensitive
Works well but needs stable voltage. Occasionally gets noisy readings if the power supply fluctuates. Overall good value.
Anonymous
Mar 19, 2026
Rating: 5/5
Fast Delivery
Arrived quickly and works as expected. Packaging was secure. Great for student projects.
Anonymous
Feb 10, 2026
Rating: 3/5
Check your logic levels
Great sensor but echo is 5V. Be careful if connecting directly to 3.3V microcontrollers without a divider. Works fine on 5V boards.
Anonymous
Jan 16, 2026
Rating: 5/5
Classic Sensor
You can't go wrong with HC-SR04. It's the standard for a reason. Easy to find libraries and tutorials online.
Q: Is this compatible with 3.3V logic boards?
A: The VCC accepts 3.3V to 5V, but the Echo output is 5V TTL. Please use a voltage divider when connecting Echo to 3.3V pins.
Q: What is the pinout order?
A: From left to right when facing the USB connector side: VCC, Trigger, Echo, GND.
Q: Can I use this module outdoors?
A: It can be used outdoors, but wind, temperature, and humidity may affect the speed of sound and measurement accuracy.
Q: What is the maximum accurate range?
A: While the spec says 400cm, reliable accuracy is typically best within 300cm depending on the object surface.
Q: Are there libraries available for this?
A: Yes, there are many open-source libraries available for Arduino, Raspberry Pi, and ESP8266/ESP32 platforms.
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