Setup WIFI on arduino with ESP8266 module

  • Arduino uno + arduino nano (or an additional 3.3v power source)
  • ESP8266 wifi module

ESP specs

I have used 2x arduino as trying to provide 3.3v from a single one caused the ESP to drain too much current and thus misbehaving.

The schematic here worked
schematic

Use the VCC and GND of the other power source, in my case the 2nd arduino.

So far so good I was able to run the example code at https://github.com/Autonomi/ESP8266/blob/master/ESP8266_Simple.cpp

The ESP get an IP and start sending HTTP GET to a response from a public service.