Exploring Tesla's Latest HW4 Car Computer

Table of Contents

1. Introduction: Dave Warner and his work in electronics analysis.
2. Hardware 4: An overview of the FSD computer and its features.
3. Hardware 3 vs. Hardware 4: A comparison of the two hardware versions.
4. Full Self-Driving: Exploring the capabilities and improvements of the FSD computer.
5. Cameras and Radar: An in-depth look at the upgraded camera and radar systems.
6. Software: The Linux kernel and the device tree file.
7. Infotainment Board: Integration of the AMD Radeon GPU.
8. Retrofitting: The challenges of retrofitting Hardware 4 into existing vehicles.
9. Future Possibilities: Speculation on the future advancements of Hardware 4 and beyond.
10. Conclusion: Appreciation for at Green The Only and the benefits of the new FSD computer.

Introduction

Dave Warner, an expert in electronics analysis at Monroe Live, joins the show to discuss the latest developments in hardware technology. With extensive experience in tearing down vehicles and analyzing their components, Dave provides valuable insights into the world of electronics, particularly in the automotive industry. In this episode, Dave focuses on Hardware 4, the latest iteration of Tesla's Full Self-Driving (FSD) computer.

Hardware 4

Hardware 4, also known as the FSD computer, has generated a lot of buzz on social media platforms like Twitter. Thanks to at Green The Only for sharing images of the new hardware, Dave was able to examine the board and offer his insights. The FSD computer features a larger board size compared to its predecessor, Hardware 3, and showcases improvements in various aspects such as FSD chips, power connectors, and markings.

Hardware 3 vs. Hardware 4

In order to understand the advancements of Hardware 4, a comparison with its predecessor, Hardware 3, is essential. While the overall appearance may not seem vastly different, closer inspection reveals significant changes. The FSD chips on Hardware 4 are larger, implying enhanced functionality. Additionally, the connectors on Hardware 4 are positioned on each end of the board, ensuring safety and redundancy. Another notable difference is the increased memory capacity, with Hardware 4 sporting 16-gigabyte dram modules, double that of Hardware 3.

Full Self-Driving

The FSD capabilities of Hardware 4 are a major focal point of interest. With the addition of more cameras, upgraded high-definition radar, and increased processing power, the FSD computer is poised to handle more data and perform complex tasks at a higher level of efficiency. The integration of neural network processors further enhances the computer's capabilities. Dave emphasizes the advantages of having improved sensors and increased processing power when it comes to the future of autonomous driving.

Cameras and Radar

Hardware 4 introduces significant upgrades in the camera and radar systems. With 12 camera connections, including high-definition windshield cameras, B pillar cameras, front fender cameras, and bumper cameras, the FSD computer offers an extensive field of view. Additionally, the inclusion of a high-definition radar, codenamed Phoenix, provides enhanced detection capabilities. The utilization of automotive ethernet ensures high-speed data transmission between the radar and the FSD module.

Software

The FSD computer runs on the Linux kernel, utilizing version 5.4.161 in its current state. The significance of this open-source operating system allows for flexibility and customization. Dave highlights the importance of the device tree file, a comprehensive code that acts as a map between the hardware and software. The device tree file, with over 4,000 lines of code, plays a crucial role in enabling the software to efficiently interface with the hardware components.

Infotainment Board

Hardware 4 integrates the AMD Ryzen CPU and Radeon GPU directly onto the infotainment board. This consolidation eliminates the need for separate boards and connectors, resulting in cost savings and improved efficiency. The reduction in parts and connectors also enhances reliability and minimizes points of failure. The decision to implement the AMD Radeon GPU on the board ensures seamless operation of the infotainment system with ample processing power.

Retrofitting

While the idea of retrofitting Hardware 4 into existing vehicles may seem appealing, Dave highlights the challenges associated with such an endeavor. The larger footprint, different electrical connections, and need for additional sensors make retrofitting impractical. The mounting strategy and available space within the vehicle may also pose obstacles. While the new hardware offers numerous improvements, retrofitting is not a viable option due to these constraints.

Future Possibilities

Despite the limitations of retrofitting, Dave believes that Hardware 4 is just the beginning of a series of advancements. With the increased size and available space on the board, Tesla has set the stage for future iterations such as Hardware 4.5 and Hardware 5. The forward-thinking design of Hardware 4 allows for potential updates and additions in the coming years, ensuring continuous improvement in Tesla's hardware offerings.

Conclusion

In conclusion, Dave expresses gratitude towards at Green The Only for their contribution in sharing early insights into Hardware 4. The new FSD computer showcases significant enhancements in various aspects, from processing power to sensor capabilities. As technology progresses, it is clear that Tesla is dedicated to pushing the boundaries of hardware innovation in pursuit of autonomous driving.