US-100 Ultrasonic Distance Sensor Module – Temp Comp, 2cm-450cm
US-100 Ultrasonic Distance Sensor Module with Temperature Compensation — 2cm to 450cm Range
The US-100 is an ultrasonic distance measuring module that determines distance by emitting 40 kHz sound waves and measuring their reflection time. It includes built-in temperature compensation, ensuring consistent accuracy even when ambient temperature changes. This module supports two output modes: UART for direct serial communication and pulse width for compatibility with existing HC-SR04 code.
Key Specifications
| Specification | Value |
|---|---|
| Operating Voltage | 5V DC |
| Operating Current | <15mA |
| Measurement Range | 2cm – 450cm |
| Accuracy | ±1mm |
| Ultrasonic Frequency | 40kHz |
| Output Modes | UART TTL / Pulse Width |
What You Can Build With This
- Obstacle avoidance robot with precise distance detection
- Tank water level monitor with data logging
- Proximity alarm for security systems
- Automatic hand sanitizer dispenser triggering
Compatibility
Works with 5V logic microcontrollers like Arduino Uno, Nano, and Mega. Can be used with 3.3V boards such as ESP8266 and ESP32 through level shifting. Also interfaces with Raspberry Pi GPIO using a voltage divider. Compatible with most development boards that have UART or digital I/O pins.
Wiring Notes
In UART mode, connect VCC to 5V, GND to GND, Trig/TX to MCU RX, and Echo/RX to MCU TX. For pulse width mode, install the jumper on the back of the module, then connect Trig to a digital output pin and Echo to a digital input pin. Ensure the power supply is 5V—the module does not operate reliably at 3.3V.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Arduino?
Yes, the US-100 works with Arduino boards using either UART or digital I/O. Use the NewPing library for easy integration.
How does temperature compensation improve accuracy?
The built-in sensor adjusts the speed of sound calculation based on ambient temperature, reducing errors caused by temperature fluctuations.
What is the difference between UART and pulse width mode?
UART mode provides direct distance data in millimeters via serial, while pulse width mode outputs a pulse whose duration corresponds to distance, similar to the HC-SR04.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items