SparkFun Qwiic Ultrasonic Distance Sensor - HC-SR04

You may be familiar with the classic HC-SR04 distance sensor, it is great for providing non-contact distance readings from 2cm to 400cm. The SparkFun Qwiic Ultrasonic Distance Sensor improves on the classic by adding a pair of Qwiic connectors to it, so now you can communicate over I²C and daisy chain any other Qwiic product of your choosing.

If you prefer to bypass the Qwiic connector and I²C you can also access the VCC, Trigger, Echo, and Ground pins broken out on the edge of the board. Please be aware that this ultrasonic sensor comes uncalibrated and you will need manipulate the raw output for your specific application.

The SparkFun Qwiic Connect System is an ecosystem of I²C sensors, actuators, shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch, 4-pin JST connector. This reduces the amount of required PCB space, and polarized connections mean you can’t hook it up wrong.

Includes:

• 1x Ultrasonic Distance Sensor - HC-SR04
• 1x Right-Angle Header - 4-pin

Features:

• Operating Voltage 3.3V
• Detecting Angle: 15 degrees
• Sensor range: 2cm to 400cm
• Accuracy: 3mm
• MCU on board: STM8L051
• Default I²C Address: 0x00
• Dimensions: 21.5 x 45.5mm
• Weight 9.2g

Documents:

• Schematic (PDF)
• Eagle Files (ZIP)
• Datasheet (PDF)
• Hookup Guide
• Github (Eagle files and Example Code)