Problem with Arduino Uno and ESP 8266 module

[Juraj]

ESP datasheet max max value Tx802.11b, CCK 11Mbps, P OUT=+17dBm 170 mA

UNO R3 5 V pin max current depends only on power source and is limited by heat dissipation. it can be 500 mA

UNO R3 3.3 V pin max 50 mA

UNO WiFi has 1A 3.3 V pin

http://forum.arduino.cc/index.php?topic=70450.0