feat(webui): battery history chart (#280) #285

sl-jetson · 2026-03-02T20:44:10-05:00

sl-jetson commented

2026-03-02 20:44:10 -05:00

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sl-jetson added 1 commit 2026-03-02 20:44:11 -05:00

feat(webui): battery voltage and percentage history chart (Issue #280 ) fc26226368

Real-time battery history visualization with:
- Subscribes to /saltybot/battery_state for continuous battery data
- Rolling 30-minute history window with automatic data culling
- Dual-axis line chart: voltage (left, cyan) and percentage (right, amber)
- Canvas-based rendering for performance
- Charge/discharge rate calculation (last 5-minute average):
  * Voltage rate in mV/min with up/down/stable indicator
  * Percentage rate in %/min with up/down/stable indicator
- Grid overlay, axis labels, time labels, and legend
- Current stats display: voltage, percentage, rates
- Responsive canvas sizing

Integrated into TELEMETRY tab group as 'Battery History' tab.
Follows established canvas rendering and data subscription patterns.

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

sl-jetson merged commit d3806094ee into main

2026-03-02 20:44:17 -05:00

sl-jetson referenced this issue from a commit

2026-03-02 20:44:19 -05:00

Merge pull request 'feat(webui): battery history chart (#280)' (#285) from sl-webui/issue-280-battery-chart into main

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Reference: seb/saltylab-firmware#285