My Business Card Runs Linux (thirtythreeforty.net)

Article summary

The author, an embedded systems engineer, designed and built a Linux computer in a business card form factor, which can boot in 6 seconds and provide a virtual serial port and emulated flash drive. The device is based on the F1C100s processor and uses a customized Linux firmware built with Buildroot. The total cost of the device is under $3, making it cheap enough to give away. The author has open-sourced the design and software on GitHub.

Main themes

• Linux on embedded devices
• USB and connector types
• Security implications
• Embedded systems engineering
• Business card design

What commenters say

• The use of USB-A in the business card design is seen as outdated and less convenient than USB-C, which offers higher bandwidth and power delivery.
• Some commenters express security concerns about plugging unknown USB devices into their computers, citing the potential for malware or other malicious activities.
• Others argue that the security risks associated with USB devices can be mitigated with proper precautions and protocols, such as using a sanitized environment for testing.
• The shift towards USB-C and away from traditional USB-A ports is seen as a necessary step towards improved connectivity and convenience, despite some initial growing pains.
• There are differing opinions on the importance of lead-free and RoHS-compliant components in the design, with some seeing it as a considerate gesture and others as an unnecessary precaution.
• The design and functionality of the Linux business card are seen as impressive and innovative, but also raise questions about the potential for malicious use or exploitation.
• Some commenters believe that the focus on security risks and potential misuse is overly negative and misses the point of the project as a showcase of technical skill and creativity.