Tesla’s new self-driving computer, Hardware 4.0 (HW4), is the latest development in the automaker’s efforts to bring autonomous driving capabilities to its vehicles. Leaked information has revealed that Tesla is already building cars with the upgraded system, and a teardown of the computer has given us a glimpse into what it can do.
The HW4 computer is a combination of Tesla’s infotainment computer and self-driving computer, and it features an upgraded sensor suite. This includes an additional radar, new cameras, and a more powerful computing platform. Tesla CEO Elon Musk has confirmed that the automaker will not provide a retrofit for HW4, but he said that the automaker still plans to deliver on its self-driving promises with HW3 and that HW4 will only push the performance higher.
The teardown was conducted by Green The Only, a well-known Tesla hacker and tinkerer. He found that the new board has a higher power consumption than HW3 when idle, but it also has improved security and redundancy. Additionally, the computer has connectors for 12 cameras, although one connector is marked as “spare”. This suggests that Tesla may have added cameras in the bumpers and windshield for improved vision-based navigation.
Green also found evidence of Tesla integrating a radar back into its sensor suite. This could be the “very high-resolution radar” that Musk mentioned in June of last year, which would be codenamed “phoenix”. It is not yet known when Tesla plans to make the new HW4 official, but it could be announced at the upcoming March 1 Investor Day.
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