SIM7080

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Revision as of 20:48, 4 January 2021 by Chao (talk | contribs)
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  • Please try to add pull up or pull down resistors on serial uart TXD RXD line, when you occur any communication problems (no response, wrong data output, garbled)
  • To use 3V3 logic serial, please feed 3V3 from pin of external power power supply, the board does not provide 3V3 power supply.