Power plan: battery-low shutdown built; logrotate's jetson-logging fixed

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01DDwfd6Ki8UfG4hK6W5YpJz
2026-10-14 08:32:17 +09:00
parent 0f3b33a3e7
commit fc9f93336e
2 changed files with 32 additions and 2 deletions
@@ -1,7 +1,7 @@
 ---
 type: plan
 status: active
-updated: 2026-10-09
+updated: 2026-10-14
 ---
 # Car Power: Ride Through Cranking, Shut Down at Ignition Off

@@ -32,11 +32,16 @@ A small host service polling the INA219 about every 1 s:
 | on input | current ≥ about 0 | nothing |
 | on battery | discharging, < grace | publish `system/power` "on battery"; **a short episode that recovers is a crank**: stamp it into the recording |
 | ignition off | discharging continuously for grace (start at 60 s; tune after the car crank test) | publish "shutting down" → stop capture (close the session cleanly) → optional parked-at-home step → `systemctl poweroff` |
-| battery low | voltage below a floor (around 10.5 V for 3S, to confirm), at any time | `systemctl poweroff` immediately |
+| battery low | **built 2026-10-14** (svc-core `orin-status --poweroff-below 11.0 --poweroff-after 30`): below 11.0 V *while discharging*, 30 readings (1/s) in a row; a missing reading restarts the count | state `stopping` on `yukart/system/orin-status`, then `systemctl poweroff` through svc-gw's polkit grant (no sudo) |

 Optional parked-at-home step: if home WiFi/LAN is reachable at ignition off, stay up long enough to copy recordings off over the LAN
 (same LAN-only rule as map sync, project-yukart decision 10), within a hard time cap, then shut down.

+The battery-low row came first: on 2026-10-14 the pack ran flat overnight with the Orin up and nothing to stop it,
+and the boot's journal ends mid-stream at 06:29:22 (ext4 replayed its journal on the next boot; nothing lost).
+11.0 V while discharging at the Orin's ~0.45 A is about 10 % charge, a margin for a clean shutdown; 30 s rides out a
+crank or a load spike. The ignition-off rows are still to build.
+
 ## Open: getting the Orin back on at ignition on

 After `poweroff` the UPS keeps supplying the board from its battery: