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A usable Linux computer for 15 dollars

Summary

Brian Benchoff builds a handheld costing about 15 dollars that runs Linux on extremely limited hardware. The project aimed for material costs of about 15 US dollars. The computer boots a Linux kernel from removable storage.

Ideas

  • An inexpensive SoC combines CPU, memory controller and basic peripherals.
  • Serial input and output replace expensive display and keyboard hardware.
  • An SD card provides the boot medium and a persistent file system.
  • Minimal components lower costs and make the build easy to follow.
  • Linux brings familiar shell and network tools to home-built hardware.

Insights

  • Usability depends more on the chosen purpose than on desktop conventions.
  • An extreme cost budget forces every interface to justify itself clearly.
  • Standardised software can make very different DIY hardware practically accessible.

Facts

  • The design was created as a compact, battery-powered handheld.

Recommendations

  • Check component availability and current prices before building a copy.
  • Set up the power supply and serial console before the complete system.

References

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