Jim's Depository

A real-world Lua policy manages dual-voltage battery banks, solar, generators, relays, and inverter interlocks—plus a practical workflow for staging configurations, flashing firmware, and inspecting controller snapshots with `power4ctl`.

A Swift Concurrency–friendly SQLite layer offers actor-owned connections, explicit read/write transactions, prepared statements, and typed row decoding—without an ORM, query builder, or migration framework.

A USB serial tool polls SRNE-based inverter registers via Modbus, emits periodic or one-shot JSON, and can toggle power-saver mode for basic automation.

blescan uses Rust, zbus, and BlueZ’s D-Bus APIs to list nearby advertisers or inspect a device’s GATT services, characteristics, and readable values. Prebuilt Debian packages are available for Raspberry Pi.

Reverse-engineering undocumented BLE characteristics and avoiding BlueZ/NimBLE connection traps made remote battery telemetry possible—until a stuck client silently removes a pack from advertising for hours.