ESP8266 Community Forum

- Thu Feb 18, 2016 5:09 am #41344 hey buddy,
i faced same problem. but now i'm here

first of all just short RX and TX pins of module that u used.and check that you receive data that you transmit on serial window.
and one more thing use arduino serial monitor OR if any other >> run with administer


common both GND (USB to ttl's AND esp's) << most common problem
GPIO^00 = 3.3v (normal using)
GPIO^00 = GND (for flash OR burn firmware)
GPIO^02 = 3.3v
GPIO^CH_PD = 3.3v
GPIO^15 = GND
baud rate must be 9600
put button between RST and GND for reset module
that's it.

i prefer that you change only GPIO^00 >>3.3 OR GND AND check only result with 9600 baudrate
just forgot all other baudrate that recive any kind of ..
garbage like>> "RST CAUSE:2, BOOT MODE:(3,6)"
other pins as i say


i just remember you again >>
just forgot all other baudrate that receive any kind of ..
garbage like>> "RST CAUSE:2, BOOT MODE:(3,6)" [set it only on 9600]

and set pins status as i say >> changes are only on GPIO^00 >>3.3 OR GND

- Thu Feb 18, 2016 5:12 am #41346 hey buddy,
i faced same problem. but now i'm here

first of all just short RX and TX pins of module that u used.and check that you receive data that you transmit on serial window.
and one more thing use arduino serial monitor OR if any other >> run with administer


common both GND (USB to ttl's AND esp's) << most common problem
GPIO^00 = 3.3v (normal using)
GPIO^00 = GND (for flash OR burn firmware)
GPIO^02 = 3.3v
GPIO^CH_PD = 3.3v
GPIO^15 = GND
baud rate must be 9600
put button between RST and GND for reset module
that's it.

i prefer that you change only GPIO^00 >>3.3 OR GND AND check only result with 9600 baudrate
just forgot all other baudrate that recive any kind of ..
garbage like>> "RST CAUSE:2, BOOT MODE:(3,6)"
other pins as i say


i just remember you again >>
just forgot all other baudrate that receive any kind of ..
garbage like>> "RST CAUSE:2, BOOT MODE:(3,6)" [set it only on 9600]

and set pins status as i say >> changes are only on GPIO^00 >>3.3 OR GND

- Wed Feb 24, 2016 5:25 am #41793 common both GND (USB to ttl's AND esp's) << most common problem
GPIO^00 = 3.3v (normal using)
GPIO^00 = GND (for flash OR burn firmware)
GPIO^02 = 3.3v
GPIO^CH_PD = 3.3v
GPIO^15 = GND
baud rate must be 9600
put button between RST and GND for reset module
that's it.

:-i prefer that you change only GPIO^00 >>3.3 OR GND AND check only result with 9600 baudrate
:-just forgot all other baudrate that recive any kind of garbage like>> "RST CAUSE:2, BOOT MODE: ___(3,6)" and blah blah.........any kind of
:-and other pins as i say


i just remember you again >>
just forgot all other baudrate that receive any kind of ..
garbage like>> "RST CAUSE:2, BOOT MODE:(3,6)" [set it only on 9600]

and set pins status as i say >> changes are only on GPIO^00 >>3.3 OR GND

- Tue Mar 15, 2016 5:02 pm #43255 The cause of this could also be a infine foor loop in your code. You could be filling up a buffer and make the board reset.