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Topics /
Hardware & Electronics
The most popular blog posts about hardware & electronics on Hacker News. 164 posts.
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Canyon HUD helmet for road riding
Performance and safety information with an audio and haptic communication system allows you to receive warnings before you see them.
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The first wired XR glasses powered by Android XR
XREAL AURA, the first wired XR glasses powered by Android XR, lets you work, watch, and play anywhere with Gemini by your side.
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Restoring a Sun SPARCstation IPX part 1: PSU and NVRAM (2020)
Repairing a dead power supply and replacing the NVRAM in a vintage UNIX workstation.
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Sam Altman Thinks You're Wasting DRAM
OpenAI CEO Sam Altman claimed in a recent podcast discussion that it's "terrible" for everyday people to own DRAM that data centres can use.
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Shapelearn Qwen 3.8 27B (13.1 GB VRAM)
ByteShape's full ShapeLearn release of Qwen 3.8 27B: five GGUF models on the quality-speed frontier across six GPUs. GPU-5 is the default wherever it fits, at 99.63% of BF16. GPU-4 stays very competitive in a much smaller file.
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DDR4 Sdram – Initialization, Training and Calibration
A detailed tutorial on DDR4 SDRAM Initialization, Training and Calibration. Exploring topics such as Read/Write Training, ZQ Calibration, Vref Training, Read Centering, Write Centering, Write Leveling and Periodic Calibration.
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Building a local positioning system to track runners using Ultra-Wideband
An open-source multi-tag fully local UWB positioning system.
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A solid-state “atomic channel” for separating rare earth elements
Rare earth elements like lanthanum, neodymium, and dysprosium are used to build the electric motor in your car, the LED lights in your house, and the MRI machine at your doctor’s office.
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Apple Watch Ultra 4
Apple today introduced Apple Watch Ultra 4, the ultimate sports and adventure watch, now with new health, fitness, and audio intelligence capabilities.
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The Age of Personalized Hardware Is Coming
Small personal devices are multiplying whether we build them or not. The real opening is the software that runs on them, and who gets to write it.
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CPUs Aren't Dead. Gemma2B Out Scored GPT-3.5 Turbo on Test That Made It Famous
Gemma 2B scored ~8.0 on MT-Bench. GPT-3.5 Turbo scored 7.94. An 87-times-smaller model on a laptop CPU, no GPU anywhere in the stack. We published the full tape — every question, every turn, every score — so anyone can verify it. We found seven failure classes. Not hallucinations. Specific patterns: arithmetic where…
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Freeze the Controller, Defrost the Food: Uncovering Vulnerabilities in Danfoss Refrigeration Controllers
Team82 researched the attack surface of the Danfoss AK-SM 800A refrigeration controller platform and identified multiple vulnerabilities affecting the embedded web management interface. Team82 disclosed the vulnerabilities to Danfoss, which addressed them in a new firmware version. Successful exploits of the…