June 2026: Delivered a Tango demo with a subprocess-spawned Tango Device Server to simulate Tango devices and align with EPICS records, enhancing the demo motor movement logic, tests, and documentation. Implemented robust resource management and linting improvements to improve reliability and maintainability; addressed system test stability by binding tests to localhost and ensuring clean shutdown.

During February 2026, the FastCS project stabilized EPICS CA record creation by implementing a clear separation of concerns between input and output records, removing an obsolete builder method, and hardening datatype updates to prevent runtime errors. The work included a focused refactor of the record construction logic, splitting _make_record into _make_in_record and _make_out_record, and fixing a test that previously created the wrong record type. These changes were committed as dbb85c4e1117bfe2f3578f2e6528b792b617a57c, with updates to filter datatype update keys that could trigger runtime errors. The result is more reliable EPICS CA integration, improved test coverage, and a cleaner, more maintainable codebase.

May 2025 monthly summary for DiamondLightSource/FastCS focusing on feature delivery and code quality improvements. Delivered BaseController Initialization and Attribute Handler Refactor, centralizing initialization logic to ensure attribute handlers and controllers are ready before use. Implemented an initialise method for Handler lifecycle and updated naming for clarity (Sender/Updater renamed to AttrHandlerW/AttrHandlerR). Linked critical commit to track change: 5495fde7abe175c5605b976d8c52c5c67f13cc36 - Add Handler.initialise(controller) (#135).