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<td><a href="https://www.sparkfun.com/products/17777"><img src="https://cdn.sparkfun.com//assets/parts/1/6/9/1/6/17777-SparkFun_Qwiic_Ultrasonic_Distance_Sensor_-_HC-SR04-01.jpg" alt=""></a></td>
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<td><a href="https://www.sparkfun.com/products/24805"><img src="https://cdn.sparkfun.com/assets/parts/2/5/0/9/7/SEN-24805-Ultrasonic-Distance-Sensor-Feature.jpg" alt=""></a></td>
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<td><a href="https://www.sparkfun.com/products/17777">SparkFun Qwiic Ultrasonic Distance Sensor - HC-SR04</a></td>
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<td><a href="https://www.sparkfun.com/products/24805">SparkFun Ultrasonic Distance Sensor - TCT40 (Qwiic)</a></td>
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You may be familiar with the classic [HC-SR04 distance sensor](https://www.sparkfun.com/products/15569), 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.
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The SparkFun Qwiic Ultrasonic Distance Sensor, a user-friendly upgrade to the popular HC-SR04 sensor, offers non-contact distance measurement from 2cm to 400cm with an accuracy of 3mm. This sensor is designed to seamlessly integrate with the Qwiic ecosystem for I<sup>2</sup>C communication, making it a breeze to add to your existing projects and daisy-chain with other Qwiic components.
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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.
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With its wide range of applications, the SparkFun Qwiic Ultrasonic Distance Sensor is a versatile tool for robotics projects, obstacle avoidance systems, and any application that requires accurate distance measurement without physical contact. Its adaptability makes it a valuable addition to your toolkit.
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Repository Contents
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Documentation
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* **[GitHub Repo](https://github.com/sparkfun/Zio-Qwiic-Ultrasonic-Distance-Sensor)** - GitHub repo for the SparkFun Qwiic Ultrasonic Distance Sensor - HC-SR04 Hardware Files.
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* **[Hookup Guide](https://learn.sparkfun.com/tutorials/qwiic-ultrasonic-distance-sensor-hc-sr04-hookup-guide)** - Basic hookup guide for the SparkFun Qwiic Ultrasonic Distance Sensor - HC-SR04.
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* **[GitHub Repo](https://github.com/sparkfun/SparkFun_Ultrasonic_Distance_Sensor-Qwiic/tree/v11_Firmware_v01)** - GitHub repo for the SparkFun Ultrasonic Distance Sensor - TCT40 (Qwiic) Hardware Files.
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* **[Hookup Guide](https://docs.sparkfun.com/SparkFun_Ultrasonic_Distance_Sensor-Qwiic/)** - Basic hookup guide for the SparkFun Ultrasonic Distance Sensor - TCT40 (Qwiic).
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License Information
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