ESP8266 Community Forum

- Sat Feb 13, 2016 2:57 am #41018 Hi noobs here

I just received 2 'ESP-12F Witty cloud Development Board' I ordered from

http://www.aliexpress.com/item/2PCS-wit ... 67419.html

However after I connected it to my computer I can see the output as below, but it doesn't display the AT command I typed nor does it respond to them.

Since I have 2 boards I have tried both, same result.
I have tried different USB cables, same result.
I am using a Macbook Pro with El Capitan. port: /dev/cu.wchusbserial1410.
I have 2 mini usbs plugged into the board:
DC power to the upper board (for power)
macbook pro USB to the lower board (UART)

The board seems to be running, as the RGB LCD on the board is slowly changing it's color/hue.

Any ideas? Thanks in advance!

;ld��|�$�|�d�c<ǃ��{�c�#��og�lgo���cp�${$sdp�g��lcn�|l�$��c��g'�l��d`�ng�$'{���gdl x�n�{�����co�|쏇�c��o'��l �g'�lorǛ�'�d`8�g�r������b'�|d��c��'o��d`�gnd`os���n{d`{��orl s$��'���og����sg'o�l�c�c8�dc$��l�ۓ���l$l~;l��ddlg���d�$l$��l��o��o�g��l$��c��o�#���#{c�ćccld��g�o���'l�|bld`rd��뢁use rtc mem data
;l��{d����cd�c\mode : sta(18:fe:34:d2:2d:d5) + softAP(1a:fe:34:d2:2d:d5)
add if0
add if1
dhcp server start:(ip:192.168.4.1,mask:255.255.255.0,gw:192.16
bcn 100

SDK version:1.bcn 0
del if1
mode : sta(18:fe:34:d2:2d:d5)
SC version: V2.5.0
f 0, scandone
f 0, scandone
SC_STATUS_FIND_CHANNEL

- Sat Feb 13, 2016 6:39 pm #41070 OK, after some research I figured it out -
The ESP8266-F on the board was loaded with a demo app that doesn't really read any AT command
I downloaded a version 0.9.5 AT firmware and flashed it, after that everything worked.

I did ran into a problem the first time I flashed it -
I first flashed it with the 3 bin files from esp_iot_sdk by following readme file (individual starting addrs etc). but after that I got non-stop serial port garbage output. Had to download a single bin file from a 3rd party site and flash it.

Hope this is helpful for other noobs.

- Sun Mar 13, 2016 12:42 pm #43021 I recently purchased two of these boards and found that after building custom firmware at: http://nodemcu-build.com everything started to work as expected fro a generic ESP8266 running NodeMCU firmware.

Although there is virtually no documentation from the manufacturer (shame on you!), as of Mar 13, 2016, you can find a sort of technical description here: download/file.php?id=1493

Hope this helps.

- Sun Mar 13, 2016 12:47 pm #43022 Opps! Make that download link: www.esp8266.com/download/file.php?id=1493