ESP8266 Community Forum

- Mon Dec 08, 2014 6:12 pm #4316 I apologise for what is probably a simple question. I have (what I believe to be) a model 2 board (LED near the antenna). Now, I have connected the Vcc and GND to my 3.3v regulated PSU. I have connected also connected CH_PD to VCC. UTXD is going to RX on the TTL and URXD is going to TX on the TTL. All is connected and switched on. I am able to see the ESP wireless access point signal and my TTL is reporting as COM4 on my Windows 7 computer. I have also tried connecting the GND pin of the TTL to the GND of the PSU.

I open Terminal, with a Baud Rate of 115200, Data Bits 8, Stop Bits 1. Connect and I do not get anything response from the ESP (I have tried powering on and off the device).
The TTL works fine it I jumper the RX and TX together (echo).

Any help / pointers very much obliged.

Thank you in advance,
Harold Clements

Kind Regards,
Harold Clements

ICQ: 621094716

- Mon Dec 08, 2014 6:33 pm #4317 Some quick pointers:
- newer boards communicate often at 9600 baud
- make sure that your terminal emulator sends a CR+LF after each command, some emulators are set to CR only.

- Tue Dec 09, 2014 5:03 am #4340 Thank you very much for your reply, but alas no luck

I have also tried using the RX TX of my Arduino and use the Arduino serial monitor, but to no avail.

As I have said, I am a newbe so please excuse the ignorance of my questions. As the ESP is reporting as a WiFi access point (and can be connected) would that suggest that it is working 100% and it's something that I am doing wrong, or could it be that the serial communication part of my device is faulty?

Thanks again for your help,
Harold Clements

Kind Regards,
Harold Clements

ICQ: 621094716

- Tue Dec 09, 2014 6:11 am #4345 you cant use arduino rx tx with atmega chip. if you remove atmega on board and try again propably it will work

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