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Check board main power fail when battery backup is present.

Technical Discussion

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Gandalf last edited by

Hello.

I need to know is there some way to check if main power (USB port on the board) fail when my t-call V1.3 ESP32 module has battery backup connected.

Best regards.
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zhang-LILYGO @Gandalf last edited by

@gandalf Hi. The USB port has no detection circuit design.
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