# Introduction **Welcome to use the DIY four way tracking and Ultrasonic obstacle avoidance car kit tutorial.** Whether you are an experienced maker or a novice with a small amount of professional skills, this tutorial will help you make something very cool: A DIY four way tracking and Ultrasonic obstacle avoidance car. The kit is based on the popular open source electronic platform Arduino. You can share and exchange your experiences and design ideas with fans all over the world. All components in the kit are individually packaged, including all the electronic components, modules and mechanical components required for these items. At the same time, there are detailed assembly and debugging instructions in this tutorial. To ensure that your smart car can be assembled and run smoothly, if you encounter difficult technical problems, you can contact us at any time, and we will provide you with high-quality technical support services for free as soon as possible. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://learn.arduinosa.co.za/arduino-robot-car/4wd-obstacle-avoidance-car/introduction.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.