[ZNM] There is no UART communication from the module. What can be wrong?

Please verify the following:
Check that module has voltage on VCC pin.
Make sure the config pin for selecting UART is pulled low. (Left floating the internal pullup will setup module in SPI mode)

    Last Update: August 8, 2017  

    December 20, 2016   1828    ZNM Q&A  

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