No output comunication on serial monitor between esp8266 + atmega328p

[oldcurmudgeon]

Your board appears to be a clone of the one described here.

ATmega328p + ESP8266 WIFI tutorial

Hi, So I had quite some trouble getting my board to work as most things are not straightforward. Therefore, I am writing this short tutorial with everything I learned so people do not have to rediscover everything on their own. This guide is specifically for the UNO R3 + ATmeg328p + ESP8266 WIFI (4Mb) USB - TTL. This thing still feels like a black box to me, so if you have any more insight please let me know in the comments. Board Layout The board has two chips, an ATmega328p chip, and an ESP…

It shows the pinout of the few ESP8266 pins that are brought out.

(I agree with one of the posters there that thinks the board is a stupid idea.)