Attributes

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

6 reviews

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.

5 FAQ

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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