ESP8266

apostolakisl · Jan 21, 2018

I'm playing around with one of these wifi devices with a built-in relay. I am not able to configure it. I have it hooked up to a usb/serial adapter and opened teraterm session. When I boot the device, teraterm has some jibberish mixed in with legible info about the device and its ip settings. I can't seem to send any commands to it. Any command I enter gives me zero response. . . as though I didn't do anything at all.

Baud rate is set to 115200. No other baud rate seems to give me anything. I've tried changing the CF/LF settings with no success.

Any idea what I'm missing here?

I also tried telnetting to it. But I get "connection refused" with all the settings I can think of.

BraveSirRobbin · Jan 23, 2018

I noticed this review on that product:

It’s amazing that this board provides the level of Wi-Fi and TCP/IP functionality for the price. That said, it is tricky to get started using the device. I found that my module did not work properly until the CH_PD pin was pulled up to VCC. The Nurdspace page that is linked from the product page doesn’t list this pin. I also found that I had to flash the device before it worked properly. I’m not sure if it was unprogrammed when I received it or if I did something to mess it up while trying to get it connected properly.
I found this website extremely useful as a reference for flashing the board and for many other odds and ends: http://labdegaragem.com/forum/topics/conhecendo-o-esp8266 Note that this board (or equivalent) is named ESP8266-01. The website is in Portuguese but Google Translate did an excellent job and it’s quite readable after being translated. I achieved first-time success in flashing the board by following the instructions on this page.
One other thing–the page I linked as well as some forum posts note that PuTTY and Tera Term don’t agree with the ESP8266. A free utility, TERMITE (linked from the above page) worked well with it.

Also, check the other reviews HERE.

apostolakisl · Jan 23, 2018

BraveSirRobbin said:
I noticed this review on that product:

Also, check the other reviews HERE.

Thanks. I see that teraterm and putty (the two I tried) have issues with it. People saying they get no response to AT commands. Well, that is me! I'll have to try the "termite" one and see if I get a response. Putty worked better than teraterm (no jibberish after the "AI_Thinker . . . "). But still no response to sending AT commands.

ESP8266

apostolakisl

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BraveSirRobbin

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apostolakisl

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