can i use the 5V 1A power adapter connect to the Raspberry Pi’s microUSB port, provide power to LHI 4X 2212 920KV Brushless Motor?
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Powering Raspberry Pi from a micro USB port is used for testing and developing purposes only. You need to use a separate ESC with build-in BEC to power your motor.
The ESC should be connected to the servo rail. To provide power to the servo rail, plug the BEC into any free pin. Please check out this part of the guide for more detail.