Let's Control It

If I use the GPIO-09 port from the dropdown menu I get all sort of problems.
I troubleshoot it first intensively but come back to this portnumber causing problems only sofar on a ESP 8266-201.
Problems are when I choose this port and click SUBMIT the browser blocks.
After a while the browser kicks in again and shows 9 out of 10 times on the port used GPIO-02 as the 09 was not accepted.
However when it shows the port GPIO-09 in use, the ESP201 keep rebooting after a while.
When I remove the GPIO-09 port when it is reachable the ESP201 becomes stable again.
Attched the message that was captured in the serial monitor.

Does any one has the same problem?

Paco

Backbone wrote:If I use the GPIO-09 port from the dropdown menu I get all sort of problems.
I troubleshoot it first intensively but come back to this portnumber causing problems only sofar on a ESP 8266-201.
Problems are when I choose this port and click SUBMIT the browser blocks.

GPIO 09 is connected to the flash and can't be used for normal I/O, even if it's available on a pin on modules like 201 and ESP-12E. If you really wan't to use it, it should be possible to program the flash in DIO mode, which uses fewer I/O pins than QIO mode - you might want to read this thread: http://www.esp8266.com/viewtopic.php?f=13&t=1216

- Jan

Hi Jan,

Thanks for the message.
I found out although Martinus already mentioned in a other thread about GPIO-9 and GPIO-10.
I can use GPIO-10 without any problem in all my ESP-201.
If there other GPIO pins that can not be used it would be swell to make a list so new bies (like me) do not have to try and error and pull hairs.

I will make a new entry in the hardware section called ESP-201 pinnumbers to be used.

Paco