GB_linux Posted November 14, 2018 Share Posted November 14, 2018 1) If a debugging cable(USB to TTL converter for serial communication in gtkterminal) is already connected in nano-pi neo board..If we power up the nano-pi it is not booting 2) If a debugging cable(USB to TTL converter for serial communication in gtkterminal) and power cable is connected simultaneously.. It is not booting... Why in this two condition the nano-pi is not booting? Link to comment Share on other sites More sharing options...
guidol Posted November 14, 2018 Share Posted November 14, 2018 sounds like a misconnected TTL-cable (GND?) or maybe a too high voltage level 5V <==> 3.3V Link to comment Share on other sites More sharing options...
Tido Posted November 14, 2018 Share Posted November 14, 2018 Do not connect the RED WIRE unless you want to power the device via UART. and more detailed information you find here, this helped me a lot: http://linux-sunxi.org/UART Link to comment Share on other sites More sharing options...
GB_linux Posted November 14, 2018 Author Share Posted November 14, 2018 1 hour ago, guidol said: sounds like a misconnected TTL-cable (GND?) or maybe a too high voltage level 5V <==> 3.3V in the TTL converter TXD, RXD, GND this three are connected Link to comment Share on other sites More sharing options...
martinayotte Posted November 14, 2018 Share Posted November 14, 2018 7 hours ago, GB_linux said: It is not booting... Are you sure about health of the SDCard ? Link to comment Share on other sites More sharing options...
GB_linux Posted November 21, 2018 Author Share Posted November 21, 2018 On 11/14/2018 at 6:48 PM, martinayotte said: Are you sure about health of the SDCard ? YES... 1) If a debugging cable(USB to TTL converter for serial communication in gtkterminal) is already connected in nano-pi neo board..If we power up the nano-pi it is not booting. THIS PROBLEM IS STILL PERSISTING FOR H3 BASED NANOPI Link to comment Share on other sites More sharing options...
martinayotte Posted November 21, 2018 Share Posted November 21, 2018 5 hours ago, GB_linux said: YES... What Serial Debug logs is showing ? Link to comment Share on other sites More sharing options...
guidol Posted November 21, 2018 Share Posted November 21, 2018 @GB_linux are you sure the Neo is booting without the TTL cable? Link to comment Share on other sites More sharing options...
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