The hottest Specifications Substack posts right now

And their main takeaways
Category
Top Science Topics

Driving fans

Only Wonder Knows • 98 implied HN points • 25 May 23
🔬 Science Physics Engineering Devices Specifications
  1. Understanding basic physics is crucial when dealing with fan systems.
  2. The relationship between air flow and air pressure in fan systems is not always linear.
  3. When selecting a fan for a system, consider factors like power consumption, flow specifications, and current consumption.

Doug MacDowell: Lean Mean Computing Machine (LMCM)

Do Not Research • 59 implied HN points • 07 Sep 23
🕹 Technology Cooking Customization Specifications
  1. A unique personal computer, the Lean Mean Computing Machine (LMCM), is created using a George Foreman 360 Grill and various components, offering multi-functionality.
  2. The LMCM allows for cooking while computing, with adjustable temperature control and a nonstick design for healthier cooking.
  3. Specifications of the LMCM include an Intel Core i7-3770 CPU, 16GB RAM, 240GB SSD, and 1500 watt cooking power, making it a versatile and convenient option.

The MiSeq's Excitation LEDs!

ASeq Newsletter • 21 implied HN points • 02 Nov 23
🔬 Science Specifications Components
  1. The MiSeq instrument by Illumina uses LEDs for excitation, which are cost-effective compared to lasers.
  2. The LEDs used include a photodiode for power monitoring and specific LEDs like the OSRAM green LED and Luminus red LED.
  3. Overall, the LED-based assembly in MiSeq replaces expensive lasers with affordable components, making it a cost-effective solution in sequencing tools.
Get a weekly roundup of the best Substack posts, by hacker news affinity:

RISC-V vector crypto spec freeze update

Fprox’s Substack • 20 implied HN points • 25 Jun 23
🕹 Technology Crypto Extensions Specifications Performance
  1. The RISC-V vector crypto specification has reached the frozen milestone after approval by the ARC and RVIA committee chairs.
  2. Changes include revised instructions for better integration, addition of new instructions like 'vgmul.vv', and splitting the Zvkb extension into Zvbb and Zvbc.
  3. The new Zvkt extension emphasizes data-independent timing for secure software implementations and the specification introduces meta-extensions for different cryptography suites and simplified illegal instruction conditions.

RISC-V Profiles

Fprox’s Substack • 5 HN points • 22 Mar 23
🕹 Technology Hardware Software Profiles Specifications Extensions
  1. RISC-V profiles consist of base ISA, mandatory, and optional extensions organized into families for specific modes.
  2. Allowing optional extensions in profiles promotes compatibility and testing of new features before mandating them.
  3. The concept of major and minor profile versions ensures a balanced evolution of profile families while allowing time for ecosystem adoption.