ESP8266 Community Forum

- Sun Jul 19, 2015 2:39 am #23618 can anybody give me some help. I am trying to flash my esp8266-12 with a sketch from the arduino ide and it looks like it is flashing and I get a message that the upload is ready. After that I disconnect GPIO0 and power cycle but nothing happens??? It does not execute the sketch???

- Sun Jul 19, 2015 4:45 pm #23667 You must ground GPIO0 then power up to get in UART mode - upload code.
Take it high and power up for Flash mode(normal running)
Usually the chip will run after upload though until a reset but if I move the GPIO0 wire to high while it is running it keeps doing what it should..

Last edited by tytower on Sun Jul 19, 2015 10:57 pm, edited 2 times in total.

Get you modules here:

https://www.banggood.com/custlink/KvGGhGF4wG

- Sun Jul 19, 2015 9:21 pm #23682 You might have to pull up GPIO0 ... leaving it dangling may still leave it low. Also, how do you know the sketch isn't running?

Free ESP8266 book available for download here.

- Sun Jul 19, 2015 9:39 pm #23684 What kind of sketch was it ?
Maybe you should try a simple LED Blinker ...
Or try the binary I've provided to help someone else viewtopic.php?f=6&t=3770&start=10