Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Operating Voltage | DC 3V - 5.5V |
| Measurement Range | 2cm - 450cm |
| Resolution | 0.3cm |
| Operating Frequency | 40kHz |
| Interface Mode | UART / IO Trigger |
| Temperature Compensation | Built-in Automatic |
| Beam Angle | 15 Degrees |
| Dimensions | 45mm x 20mm x 15mm |
| Weight | 8 grams |
| Compatibility | Arduino, Raspberry Pi, STM32 |
Anonymous
Mar 29, 2026
Rating: 5/5
Easy to integrate with Arduino
As a beginner, I found this very easy to wire up and code for. There are plenty of libraries available that support the US-100 specifically. Works straight out of the box.
Anonymous
Mar 29, 2026
Rating: 5/5
Excellent accuracy with temperature compensation
This module is a significant upgrade over the standard HC-SR04. The built-in temperature compensation makes a noticeable difference in readings when used in environments with fluctuating temperatures. Very reliable for my robotics project.
Anonymous
Mar 26, 2026
Rating: 5/5
Perfect for obstacle avoidance
Used this on a custom drone build for low-altitude holding. The response time is fast, and the range is consistent up to 4 meters. Highly recommended for anyone needing precise distance data.
Anonymous
Mar 18, 2026
Rating: 5/5
Reliable and consistent
I bought ten of these for a university lab. All units showed consistent calibration. The temperature compensation feature is a genuine benefit that reduces error margins significantly compared to cheaper alternatives.
Anonymous
Mar 09, 2026
Rating: 4/5
Solid performance for the price
We tested these for a small conveyor belt counter system. They performed well under indoor lighting conditions. Not suitable for outdoor heavy rain, but perfect for controlled indoor environments.
Anonymous
Mar 05, 2026
Rating: 4/5
Great dual-mode functionality
I love that I can switch between UART and IO trigger modes easily. It saved me a GPIO pin on my microcontroller. The only reason for 4 stars is that the documentation could be slightly clearer on the baud rate settings.
Q: Can this sensor work in complete darkness?
A: Yes, the US-100 uses ultrasonic sound waves rather than light, so it functions perfectly in total darkness or bright light conditions.
Q: Does it come with connecting wires?
A: The module typically comes with header pins installed, but connecting jumper wires are usually sold separately depending on the specific retailer package.
Q: How do I switch between IO and UART modes?
A: You can switch modes by shorting the jumper cap on the back of the module. Closed enables UART mode, while open enables IO trigger mode.
Q: What is the default baud rate for UART mode?
A: The default baud rate for the US-100 in UART mode is 9600 bps. This can be changed via command if necessary.
Q: Is this module waterproof?
A: No, the US-100 is not waterproof. It should only be used in dry, indoor environments or protected enclosures.
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