Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	DC 2.4V - 5.5V
Static Current	< 2mA
Output Signal	Electric Frequency Signal (High: 8ms, Low: 2ms)
Sensing Angle	Not more than 15 degrees
Detection Range	2cm - 450cm
Accuracy	3mm
Interface Type	UART / TTL
Trigger Mode	Level Trigger / Serial Port Trigger
Dimensions	45mm x 20mm x 15mm
Weight	8g

6 reviews

Anonymous

Mar 22, 2026

Rating: 3/5

Works but sensitive to noise

The module functions as described, but I had to add some capacitors to filter out electrical noise in my circuit. Once filtered, readings are consistent.

Anonymous

Mar 18, 2026

Rating: 5/5

Perfect for Arduino Projects

This US-100 module works flawlessly with my Arduino Uno. The serial communication is stable, and the range accuracy is impressive for the price. Highly recommended for robotics.

Anonymous

Mar 13, 2026

Rating: 4/5

Solid performance

Using this for obstacle avoidance on a small drone. It responds quickly and the angle of detection is narrow enough to be useful without too much noise.

Anonymous

Mar 12, 2026

Rating: 5/5

Easy to integrate

As a beginner, I found this module very easy to wire up. The 3.3V and 5V compatibility saved me from needing extra level shifters. Great product!

Anonymous

Mar 06, 2026

Rating: 4/5

Good value, clear documentation

The sensor is reliable and the included pinout diagram was very helpful. It took a little time to calibrate the code for my specific voltage, but once set up, it performs well.

Anonymous

Mar 05, 2026

Rating: 5/5

Better than HC-SR04

I switched from the HC-SR04 to this US-100 and the difference in stability is noticeable. The temperature compensation feature seems to work well indoors.

5 FAQ

Q: Can this module be used directly with a 3.3V microcontroller like ESP32?

A: Yes, the US-100 operates within DC 2.4V to 5.5V, so it is fully compatible with 3.3V systems like the ESP32 without needing a logic level converter.

Q: Does this come with jumper caps for selecting the trigger mode?

A: Yes, the package includes jumper caps that allow you to easily switch between UART mode and IO trigger mode by configuring the pins.

Q: How does temperature affect the reading accuracy?

A: The US-100 has built-in temperature compensation which helps maintain accuracy across varying temperatures, reducing errors common in simpler modules.

Q: Is there any library available for Raspberry Pi?

A: While we do not provide an official library, many open-source Python libraries for ultrasonic sensors on Raspberry Pi support the US-100 via its GPIO or UART interfaces.

Q: What is the maximum update rate for distance measurements?

A: The module can provide updates approximately every 60ms, allowing for a refresh rate of around 15-20 Hz depending on your coding implementation.

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