Hi,

Just commented on the wiki page about using an Arduino as a USB-serial
adaptor, that the main chip (atmega328p for ex) can be disabled by
wiring RESET to GND, no need to remove it. Recent arduinos are
soldered on board as well, so they cannot be easily removed.

A third alternative is to apply this arduino sketch to tell the atmega
chip to do not interfere with the TX and RX pins:

https://gist.github.com/wmhilton/6034455
http://web.archive.org/web/20101027200300/http://students.sabanciuniv.edu/kehribar/?p=19

See also my page:

http://www.zoobab.com/use-the-arduino-as-a-serial-adaptor

Arduino is mostly 5V, so as the USB-serial chip in front, so I was
wondering if those chips were sending 5V in TX if that could damage
the sunxi SOC.

Any idea if the sunxi chips are 5V tolerant in RX?

Best,

-- 
Benjamin Henrion <bhenrion at ffii.org>
FFII Brussels - +32-484-566109 - +32-2-3500762
"In July 2005, after several failed attempts to legalise software
patents in Europe, the patent establishment changed its strategy.
Instead of explicitly seeking to sanction the patentability of
software, they are now seeking to create a central European patent
court, which would establish and enforce patentability rules in their
favor, without any possibility of correction by competing courts or
democratically elected legislators."

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