Home Assistant Integration: Reflashing BK7231N in Tuya Smart DIN-rail Energy Meter TAC2121C

The discussion revolves around the integration of the BK7231N chip in the Tuya Smart DIN-rail Energy Meter TAC2121C with Home Assistant. The user seeks to reflash the device to eliminate reliance on Tuya services. Various options for reflashing are explored, including using OpenBK7231N or replacing the BK7231N with an ESP-12F flashed with Tasmota or ESP-Home. The main challenge identified is the lack of information regarding the energy meter's chip and the necessary drivers. Participants share insights on the components found on the PCB, including the V9911 chip, and discuss the UART communication protocol. They analyze data packets to extract energy statistics, voltage, and power readings. The conversation progresses to successfully sending commands to the TuyaMCU, enabling the meter to report readings and toggle the relay. The final steps involve refining the autoexec.bat configuration for optimal performance and addressing issues like RSSI display and data rounding.
Summary generated by the language model.