Yahboom HC-SR04 Ultrasonic Module 5V 2-400cm 4-Pin XH2.54 TTL Distance Sensor for Robotics

Overview

The Yahboom HC-SR04 ultrasonic module is a professional ultrasonic ranging module with four vertical pins, designed for distance measurement by programming. It can be plugged directly into various development boards or a smart car chassis without additional cables, and provides stable, accurate data output.

Key Features

• High precision and small blind zone
• Fast feedback
• 4-pin XH2.54 pin header interface
• Supports direct insertion into XH2.54 female chassis and direct soldering use
• TTL trigger/echo interface (VCC, TRIG, ECHO, GND)

Specifications

Working Principle

• Use IO to trigger ranging and give a high-level signal of at least 10us.
• The module automatically sends 8 square waves of 40khz, and automatically detects whether there is a signal return.
• If there is a signal return, a high level is output through the IO; the duration of the high level is the time from the ultrasonic wave to its return.

Test distance = (high level time * sound speed(340M/S)) / 2

Ultrasonic timing diagram notes

• CH1: 10 microsecond high-level transmit signal
• CH2: received return signal
• The echo level output is proportional to the detection distance

Interface (Pinout)

VCC, Trig. (Control terminal), Echo (Receiving end), GND

Note: The module should be plugged on the circuit board before powering on to avoid high-level malfunctions. If it happens, power on again to solve it.

What's Included

• Ultrasonic module
• DuPont line 10PIN (for free)

Applications

• Developing board experiments
• Smart car / robotics distance ranging

Manuals

Reference materials and code are provided. Tutorial link (official): http://www.yahboom.net/study/ultrasonic

For product support or order assistance, contact support@rcdrone.top or visit https://rcdrone.top/.

Details

Accurate 5V ultrasonic ranging for robotics and DIY projects, with a compact board and 4-pin TTL interface.

Ideal for smart cars and development-board experiments where reliable obstacle detection is needed.

The vertical XH2.54 4-pin header plugs into compatible sockets or can be soldered for a solid build.

Wiring stays simple with VCC, TRIG, ECHO, and GND clearly mapped for common microcontroller I/O.

Works neatly on small robot platforms for front-facing distance sensing and obstacle avoidance.

Get a clear view of both sides of the PCB for easier integration into tight enclosures or chassis mounts.

Dimensions and core specifications help confirm fit and performance before adding it to a robotics build.

Includes the ultrasonic module and a free 10-pin DuPont jumper cable set for quick prototyping.