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An interactive-speed Linux computer made of only 3 8-pin chips (dmitry.gr)

441 points by dmitrygr · 485 days ago · 147 comments on HN

Article summary

The article describes a project to build a minimal Linux computer using only 3 8-pin chips, with the goal of creating a simple-to-build kit computer. The project uses a USB-to-serial bridge, a microcontroller, and a RAM chip to achieve this. The author discusses the design process, including choosing the right microcontroller and dealing with limited pin count. The result is a functional Linux computer that can be assembled with basic soldering skills.

Main themes

  • Minimal computing
  • DIY electronics
  • Linux on embedded systems
  • Microcontroller selection
  • USB and serial communication

What commenters say

  • The project is reminiscent of older DIY computer kits, but with a more modern twist.
  • Using a separate USB-to-serial chip is necessary due to the complexity of the USB protocol.
  • Some commenters suggest using alternative storage methods, such as SPI flash chips, but this would require additional complexity.
  • The use of an SD card for storage is convenient, but it contains a powerful processor that could potentially be hacked.
  • The project's goal of being replicable by beginners is important, and using a chip clip or other specialized tools may not be feasible for this audience.
  • The simplicity of protocols like SPI is missed, and the complexity of USB is lamented.
  • The project is an impressive achievement, and the author's experience with similar projects is evident.
  • There are potential alternatives to using an SD card, such as using a micro-SD to SD adapter, but these may not be practical for this project.