ESP8266 Community Forum

- Sat Jul 18, 2015 12:32 pm #23584 Hello, I am new here. Sorry for my bad english i am spanish. Ok, i have a ESP-01, but don´t flash the firmware. The led blue is constanly ON, and send to pc junk data. I use arduino uno to flash the esp. The process finish Ok, but dont start and the blue led is always ON, dont Blink. Help Please

- Sun Jul 19, 2015 4:09 am #23621 see the wiki on this page (scroll up) it'll be bad power , or connections I'd say

Get you modules here:

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

- Tue Jul 21, 2015 3:02 am #23798 Did you connect GPIO0-GND, then reset the ESP and then disconnecting GPIO0/GND before flashing the ESP with the arduinoIDE?

- Wed Jul 22, 2015 5:23 am #23905

Did you connect GPIO0-GND, then reset the ESP and then disconnecting GPIO0/GND before flashing the ESP with the arduinoIDE?

Hm Thats odd when I write the code to my chip ,to put it in UART mode, I hold GPIO0 low all the time , during the upload also.
Once uploaded the code will run with the board unchanged until an intentional or unintentional reset . Then I have to take GPIO0 high and power off and on to start the program running and it runs as intended in FLASH mode.

Get you modules here:

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