Implements a robust AT command channel with asynchronous read/write, response parsing, and event dispatching. Decouples command execution from hardware interface via IAtReader/IAtWriter abstractions. Reusable pattern for any AT-based modem or device.

Provides a clean MQTT-based Home Assistant integration with automatic device discovery, entity registration, and state publishing. Uses a fluent interface for defining device metadata and sensor presets. Can be extracted for any IoT project that needs to integrate with Home Assistant.

Implements the Modbus RTU protocol with function code handling, request/response framing, CRC validation, and error processing. Pure protocol logic with no hardware dependencies, making it portable across serial and TCP transports. Demonstrates clean separation of concerns.

Provides DEC-to-BCD and BCD-to-DEC conversion, widely used in real-time clock and sensor drivers. A self-contained utility class with no external dependencies, easily extractable for any project needing binary-coded decimal conversion.

Defines custom attributes (Interface, Telemetry, Command) for annotating device interfaces and properties. Enables automated documentation generation and telemetry discovery. A lightweight pattern that can be reused in any driver library requiring metadata about hardware capabilities.