nut

• 2026-11-02
  Three shutdowns, three causes

  A storage box behind a DJI power station went down three times in two days with the battery near 95 %. The journals gave three different endings.

  Power Stations as a UPS · 12/12 8 min read
• 2026-11-02
  The UPS said 2 minutes at 95 %

  A UPS monitor took the minimum of three runtime estimates and raised low battery at 95 %. One of them was the station's time to full charge.

  Power Stations as a UPS · 11/12 6 min read
• 2026-10-17
  The alert about the blackout needs the internet too

  Power-cut alerts leave over an uplink the cut can take down: retries, per-channel queues, a router watchdog, and a status LED that goes dark.

  Power Stations as a UPS · 7/12 14 min read
• 2026-10-16
  A null battery reading cleared the low-battery alarm

  Building the Go observer that serves two power stations to stock upsmon: six ways the first version could fail, and the outage test that went through.

  Power Stations as a UPS · 5/12 10 min read
• 2026-10-14
  Twenty-five percent is a countdown

  How a power station's MQTT readings should reach the machines that must shut down: a Go observer on the router that speaks NUT, as designed.

  Power Stations as a UPS · 3/12 9 min read