ESP8266 Community Forum

- Wed Feb 03, 2016 1:15 am #40332 when i try to upload the code with arduino ide 1.6.7
following error shows:
error: failed reading byte
warning: espcomm_send_command: cant receive slip payload data

my wire connection are :
FT232------------------------esp8266
rx/tx --------------------------tx/rx
gnd -------------------------- gnd/gpio_o
vcc 3.3v------------------------- vcc/ch_md


whats the problem plz help me!

- Wed Feb 03, 2016 3:34 am #40336 This site needs a FAQ...

* Most serial adapters do not provide enough current on the 3.3v output, you probably need an external power source.
* GPIO2 must not be left dangling around.

- Wed Feb 03, 2016 5:44 am #40341 Before you even try to program the ESP8266, see if you can communicate with it.

First, set your serial terminal to 74880 baud and see if you can see messages from the boot rom.

If that works change the terminal baud rate, reboot, and see if you can see the AT prompt. The baud rate may be either 9600 or 11520 depending on the version of firmware the device came with. Then try some simple AT commands.

Do not bother trying to program the device until you have proven that you can reliably communicate with it!

If you are getting no response, check that your FT232L is working by looping the TX and RX.

Also, as eduperez says, some serial adapters do not provide enough current on the 3.3v output. Doing the above tests should establish if yours is up to the job.

@eduperez, I agree that this site needs some basic FAQs. Something like this would be a good start :- http://iot-playground.com/2-uncategoris ... nk-example

- Thu Mar 16, 2017 12:27 pm #63796 Found little help at http://www.microcontroller-project.com/esp8266-with-arduino-and-ft232.html But still some time arduino ide hangs during uploading. Also the upload speed is very slow.