wbr1

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codypendant / aciq-minisplit-protocol

Reverse-engineered UART protocol for an ACiQ K18W mini split (TCL WBR1 dongle, CN-16). 115200 8N1 with 0xA5 framing - not TCL tclac, not Midea, not Tuya. Includes an ESPHome listen-only decoder for Home Assistant.

protocol reverse-engineering tcl home-assistant uart hvac logic-analyzer tuya heat-pump esphome mini-split rtl8720cf aciq wbr1

Updated Aug 12, 2026
Python

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