A five-year retrospective on the Galaxy Watch 4 Classic, its return to Wear OS, iconic rotating bezel, longevity, battery life, and why it still holds up in 2026.

A practical Node 304 TrueNAS rebuild from a Dell Inspiron 660, with parts, dual-NIC notes, and the case quirks that came with it.

Set up an ESP32 in Arduino IDE with board manager URLs, UART drivers, and a blink sketch to confirm the board works.