My sketch won't load when external powering Nano

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hi !

i have arduino nano , made program using mirf. it's working great when plugged computer, can't working on external power, unless press reset button. once pressed reset button, working fine, it's not want. want work on external power source without pressing reset button.

i did search on forum , found 1 chip seems have problem (diecimila) i'm wokring nano thing.

http://www.arduino.cc/en/guide/troubleshooting#toc5

anyway tried connect rx , tx directly mentionned in link, it's not working.

any ?

thank :)

hi, welcome forum.

the troubleshooting arduino diecimila not arduino nano. arduino nano has normal reset circuit.
we need know lot more. how connected ? kind of power supply use ? pin connect power supply ?

if remove arduino nano, , upload sketch blinking led. blink when use power supply ?


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