Teardown of a Smart Life Curtain (Shutter) switch, Flashing, Configuring and setting up with HA

The discussion centers on the teardown, flashing, and integration of the Smart Life DS-151 N+L WiFi+BLE curtain (shutter) switch featuring a BK7231T processor and WB3S board, originally intended for local control via Local Tuya and Home Assistant (HA). The device is a 4-wire mains actuator with earth, neutral, and two live wires for open/close functions. Users explored flashing the device with OpenBeken firmware as an alternative to Tasmota, aiming for local control and MQTT integration. Key challenges include implementing a dedicated shutter driver with relay control for up/down/stop commands, timing-based position control, and preventing simultaneous relay activation to avoid motor damage. The community discussed autoexec.bat scripting for relay timing and button handling, MQTT command limitations, and the need for multiple MQTT entities (open, stop, close) to enable proper HA automation. Some users reported issues with physical button behavior and rapid relay switching, resolved by adjusting delays and stop commands in scripts. Suggestions include developing a C-based shutter driver compatible with Tasmota commands, testing with real shutter hardware, and improving MQTT command handling for safer and more precise shutter control. The discussion also covers the importance of physical motor end stops, relay channel management, LED indicators, and integration nuances between OpenBeken and HA MQTT topics. Users shared experiences flashing similar devices like Etersky WF-CS01 and Teekar CBS03 modules, emphasizing the need for clear autoexec.bat placement and configuration. Overall, the thread provides a detailed technical roadmap for converting Smart Life curtain switches to locally controlled, MQTT-integrated devices using OpenBeken firmware with community-driven driver development and scripting enhancements.
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