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Purchased some clone Arduino nanos a while ago and finally got to working with them. Of the 3 i worked with, 2 of them upload and verify fine. The third is able to upload (code functions properly), however it fails to read flash data.

this is required to post pastebin

Here is the output from a clone that worked: https://pastebin.com/x1y0yr1k

Here is the output from the one with the issue: https://pastebin.com/YGAGC4XN

this is required to post pastebin

What I've done so far:

  • Reflashed bootloader from working Arduino as ISP
  • CH340 driver installed
  • Used (old) bootloader when uploading
  • Tested on both Linux and OSX

Any suggestions or insight would be much appreciated.

  • internal fault with the atmega chip? – Chris Combs Dec 27 '19 at 19:33

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