Instructions

Connect the module with the TTL-cable with the aid of the following chart.
The pin assignment of the ESP8266 can be seen in the picture above.
ESP8266 TTL-Kabel
RX
TX
GND
VCC
CH_PD
GPIO0
TX
RX
GND
3.3 V
3.3 V
3.3 V
Use with an Arduino Uno
Connect the module with the Arduino Uno with the aid of the following
chart or rather the following picture.
The pin assignment of the ESP8266 can be seen in the above-named
picture.
ESP8266 Arduino Uno
RX
TX
GND
VCC
CH_PD
GPIO0
Pin 1
Pin 0
GND
3.3 V
3.3 V
3.3 V