ESP8266 Community Forum

- Tue Dec 02, 2014 8:12 pm #3885 if you have esp-01 model and a confirmed acceptable power supply and all you have is a red led on power up and no blue led blinks, it could really be faulty.

- Thu Dec 04, 2014 5:43 am #3963 Hmmm,

I had issues for a while but they were all related tot eh FTDI serial board, cheep chinese knockoff which got bricked because of new drivers. Took me a while to fix it.

I'm running through the following example with an ESP01:

http://importhack.wordpress.com/2014/11 ... eb-client/

With GPIO0 set to ground it was set to upload mode so could send or receive anything. Disconnecting it and switching off and on power gave me the standard init text 'ready' etc.

I used coolterm on a mac, and even at the wrong baud I at least got something, garbage text or otherwise.

Seems odd that two of your chips don't seem to work, I would assume something else along the 'chain' is effecting them.

try the configuration above and see if anything changes?

best of luck

Cdr

- Fri Dec 12, 2014 3:40 pm #4700 Hi there,
Some time ago i told you my story about a couple of ESP8266 I could not get to work even following all clever advices from this Forum. I told to myself my ESP must have a HW problem so I jumped to eBay for another couple of ESP8266.
I've just received them. Hurried to connect them to my USB/serial adapter... and guess what... The red LED on... that's all. A tried Arduino and 2 other USB/serial devices and several terminal sofrware as Arduino, Putty, Termite.... Nothing to do !
Therefore I'm asking you guys to stop telling people that one can get a WiFi 5$ chinese device working as a WiFi sender/receiver.
I pay 100$ for a couple of Serial/USB - ESP8266 working on a W8.1 standard PC. 50$ for a YouTube show.
I also send gratis my 4 ESP8266 to any amator.

Greetings to all dreamers.
Jacques

- Sat Dec 13, 2014 9:38 am #4744 if you are powering the ESP8266 from Silicon Labs CP210x there a numerous posts here explaining why that is not working. Get a 3.3v powersupply thar can provide at least 300ma. Connections are described here http://rayshobby.net/?p=9734. forget about UTXD and URXD and the Silicon Labs CP210x for now. If you are getting a blue blink when you power it up you know you had a power issue. Move on to connect the Silicon Labs CP210x. Ground should be shared between the power supply and Silicon Labs CP210x. Use a terminal program where you can control sending of CR-LF and try with that on and off. If you get anything back you are one step further. if you get garbage back you need to adjust the baud rate. again different firmware versions have different default values - a lot of content about this on this board.

if this is not working, please upload pictures of our setup and connections.