Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	DC 3V - 5.5V
Static Current	< 2mA
Sensing Angle	15 degrees
Measuring Range	2cm - 450cm
Resolution	0.3cm
Interface Mode	UART / TTL Pulse
Temperature Compensation	Built-in Automatic
Operating Temperature	-20°C to +70°C
Dimensions	45mm x 20mm x 15mm
Mounting Hole Diameter	4mm

6 reviews

Anonymous

Mar 29, 2026

Rating: 5/5

Reliable for thesis project

Used this for my final year project involving an autonomous rover. It handled outdoor conditions well thanks to the wide voltage range and temp compensation. Highly recommended.

Anonymous

Mar 19, 2026

Rating: 5/5

Bulk buy quality check

Bought 20 units for our workshop. Every single one worked out of the box. Consistent performance across the batch which is rare for budget sensors.

Anonymous

Mar 10, 2026

Rating: 5/5

Upgrade from HC-SR04

If you are tired of fluctuating readings with older modules, get this. The internal temperature sensor really helps normalize the data without extra coding.

Anonymous

Mar 09, 2026

Rating: 5/5

Perfect for robotics projects

The dual-mode feature is a game changer. I can switch between UART and pulse mode easily depending on my microcontroller. The temperature compensation makes the readings much more stable than the standard HC-SR04.

Anonymous

Mar 06, 2026

Rating: 4/5

Great accuracy, minor wiring confusion

Accuracy is impressive even at longer ranges. The documentation could be slightly clearer on the jumper settings for mode selection, but once figured out, it works flawlessly.

Anonymous

Mar 03, 2026

Rating: 4/5

Good value for money

Works well for altitude hold on small drones. The response time is quick enough for basic stabilization. Just ensure your power supply is stable.

5 FAQ

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

A: In PWM mode, you can trigger a measurement every 60ms. In UART mode, the module continuously outputs data, but we recommend polling no faster than 50ms to ensure stability.

Q: Does the package include mounting screws?

A: No, the package typically includes only the sensor module. Mounting screws (M3 or M4) are not included but can be sourced easily given the standard hole spacing.

Q: Can this module work directly with a 3.3V ESP32 without a logic level converter?

A: Yes, the US-100 operates from 3V to 5.5V, so it is fully compatible with 3.3V systems like the ESP32 or Raspberry Pi without needing additional converters.

Q: How do I switch between UART and PWM modes?

A: There is a jumper cap on the module. Placing the jumper on the two pins enables UART mode, while removing it sets the module to the default PWM pulse mode.

Q: Is there a library available for Arduino?

A: Yes, several community libraries support the US-100. You can use standard NewPing library configurations or specific US-100 libraries found in the Arduino Library Manager.

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