Robokitshop ESP01 ESP-01 WIRELESS WIFI MODULE Electronic Components Electronic Hobby Kit

This module requires a 3.3 volt supply for VCC, and 3.3V logic. It is not 5V tolant. Connect RX or TX on 5V FOR FOR ARDUINO will destroy this module. You must use a logic level converter, or a 3.3V FOR ARDUINO The 3.3V supply FOR ARDUINO Uno has inadequate current capabilit to power this module. You must provide a separate, higher 3.3V supply(about 300mA or better) The ESP8225 module is very new on the market and support and documentation for it is currently very limited.