ESP8266 Community Forum

Hi,

I've worked with ESP8266 ESP01 with decent success in terms of being able to flash code and control "things". And, this forum has helped me a great deal when I was a noobie with ESP8266 ESP01 chip.

For my next project I needed more output pins and decided to give ESP12E a try.

I'm not good at soldering and did a somewhat shabby job at creating a break out board by following youtube videos.

The pin connections I've made to check if I'm able to interact with the chip using AT commands is:
for UART:
TX of CP2102 - RX of esp
RX of CP2102 - TX of esp
GND (CP2102) - GND (External supply)

for esp12e
Vcc - 3.3V (External supply)
GND - GND (External supply)
RST - 3.3V (via 10K resistor)
EN - 3.3V
GPIO0 - GND
GPIO15 - GND

Now, my problem is that I'm unable to power on the chip with above connections. The blue light appears only if GPIO2 is connected to ground, with the above pin connections in place. When I open the serial monitor and type AT, I get no response. I tried this at all baud rates in the serial monitor. Also, pulling RST pin low doesn't show any blinking of the blue led to indicate that the chip got reset.
Can anyone please guide me on what I'm doing wrong? I'm not sure if the information provided is sufficient. Let me know if any further information is required.

Thanks.

Take a look here for a stable design: ESP8266 nEXT EVO Board Design description and schematics.

for running the ATfw (or any other flashed sw) gpio0 and gpio2 have to be pulled high!

After asserting rst you should see some boot message if your terminal sw can be set to 74880 baud.

Thanks for the replies guys!! Will check the link shared.