ESP8266 Community Forum

- Tue Apr 21, 2015 1:46 pm #15222 I got two ESP8266-12 chips with breakout boards. When I connect the power a blue led lights up shortly and in the serial monitor on my Arduino only AT+RST is shown. There is no response to other AT commands.
What might the problem here?

- Wed Apr 22, 2015 12:13 am #15254 Moin,

some modules seem to come without flashed firmware and you may see a rom boot message only.
You have to flash a firmware then.
Some boot into 115200 baud.
Most modules will start at 74880 baud, print a boot message, maybe switch to 115200, only print something on
errors and then switch to firmware defined baud rate.
So you always see some "garbage" in your terminal.
If that garbage is at the end of ouput switch baud rate.

Hope that helps,
Cal

Get your modules here:

https://www.banggood.com/custlink/KvGGhGF4wG