• Feb 25, 2026 Reverse Engineering Daikin IR Codes for Home Assistant

    An evening spent trying to control Daikin ceiling cassette air conditioners from Home Assistant using a Broadlink RM4 Mini IR blaster. What started as “surely someone has done this” turned into a full reverse engineering session of the DAIKIN200 IR protocol, programmatic code generation, and ultimately hitting a hardware limitation of the Broadlink itself.

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