The IoT controllable small lamp based on the Tuya Smart Platform did not consider the voltage of the lamp strip during the production process. It used 54v at the beginning. When replacing the 12V power supply, I encountered a small problem in reducing the voltage. Should 12V be directly converted to 3.3V or 12V? After converting to 5V and then to 3.3V, I finally decided to use the second solution.
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