ESP8266 Community Forum

Posted: **Mon Feb 21, 2022 7:44 pm**

Hello. I bought an esp8266-03 for sending data to a server, but when I tried to send AT command via UART, didn't receive anything. Also, I tried to update the firmware, and after unplugged and reconnected nothing happened , My connection diagram is in the following images.

Posted: **Tue Feb 22, 2022 1:20 am**

is it the 1 MB version of AT 2?
AT2 communicates on pins 13 and 15 (swapped UART pins)

Posted: **Tue Feb 22, 2022 1:59 am**

How can I find out which version is it? I am using this module:

https://www.optimusdigital.ro/ro/wirele ... esults=659

Posted: **Tue Feb 22, 2022 1:59 am**

How can I find out which version is it? I am using this module:

https://www.optimusdigital.ro/ro/wirele ... esults=659

ESP8266 Community Forum

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