Chat here is you are connecting ESP-xx type modules to existing AVR based Arduino

Moderator: igrr

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By juanpintom
#21535 You can do it connecting RX-TX crossed between ESP and Arduino and the help of Souliss library. Here some tips about Souliss:
http://www.esp8266.com/viewtopic.php?f=29&t=3104&p=18882&hilit=souliss#p18882

And your question answered step by step :P
https://github.com/souliss/souliss/wiki ... _as_Bridge

Regards