Extreme Pi Boot Optimization(kittenlabs.de)

481 points by todsacerdoti 2 years ago | 131 comments

Blog post describing how the author optimized a Raspberry Pi Zero 2 W to reach Linux userspace in 3.5 seconds for a solar-powered WiFi camera project.

Building the Pocket CO2 Project(bitbanksoftware.blogspot.com)

78 points by _Microft 3 years ago | 31 comments

USB for Software Developers: An introduction to writing userspace USB drivers(werwolv.net)

387 points by WerWolv 6 months ago | 46 comments

A blog post introducing USB concepts for software developers and explaining how to write userspace USB drivers, with C++ examples.

Linux/4004: booting Linux on Intel 4004 for fun, art, and no profit(dmitry.gr)

517 points by dmitrygr 2 years ago | 136 comments

Dmitry Grinberg's project page describing booting Debian Linux on a custom board powered by a 1971 Intel 4004 4-bit microprocessor via MIPS emulation.

DIY open-source ultrasound hardware on the rp2040/rp2350(un0rick.cc)

70 points by kelu124 5 months ago | 6 comments

QSOE: QNX-inspired OS with dual-kernel architecture(qsoe-dev.blogspot.com)

39 points by ymz5 4 months ago | 17 comments