Writing

Field notes and deep dives on infrastructure, cloud, and IoT hardware.

• 2026-08-04

  Chasing a 5% Ghost: When a Good Result Lies

  Somewhere out in the field, about 5% of an 1800-unit Raspberry Pi CM3+ fleet would crash — but only after a very specific event: losing and regaining their 4G connection. When it happened, the unit...