Writing tagged "esp32"

Reinventing my rack cooling solution

2026-01-23 tinkering hardware esp32 home-lab

Most of my computers have been sitting in a noise-insulated 19“ rack for 6 years or so. Although I’ve been administrating real servers for more than a decade, I still get a kick out of cosplaying as sysadmin with machines that I can actually touch, rather than being located in some rented data hundreds of kilometers away.

The rack I bought came with a temperature-controlled fan that pulled air through the whole box (just tall enough to fit under a desk), but could only run at 0% and 100% speed, because the temperature control was just a binary switch. That kinda defeated the point of the rack being noise-insulated, because even Noctua fans make some noise at 100% speed.

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