A minimal, self-contained Stream subclass that wraps an in-memory buffer with capacity bounds. It implements all virtual methods required by Arduino's Stream interface, making it reusable for any ESP32/Arduino project that needs to buffer HTTP responses or other data streams without external dependencies.

A simple C++ class providing RAII-based wake locks to prevent deep sleep during critical operations (e.g., OTA, MQTT processing). It uses a FreeRTOS mutex for thread safety and supports expiry to avoid battery drain. The pattern is easily extractable to any ESP32 project needing cooperative sleep prevention.

A sleep scheduling module that computes the next wake interval based on day-of-week and time-of-day slots. It parses a compact config string and returns the duration until the next scheduled wake. The logic is self-contained, platform-agnostic, and could be reused in any low-power IoT project needing flexible wake schedules.

Handles parsing of dither kernel configuration strings (e.g., 'FloydSteinberg, Atkinson') and generates JSON options for Home Assistant discovery. The normalization and serialization logic is isolated from the rest of the codebase, demonstrating a clean separation of concerns. It can be repurposed for any project requiring configurable image dithering.