ESP8266 Community Forum

- Fri Apr 28, 2017 10:24 am #65364 hi, and a big greeting to everyone here, i m new but i think this forum is gonna be one of my favorite places. esp changed my life.
Well i have several devices at home but i m experiencing several problems with one on the NodeMCU dev board (used as a weather station and display for various IOT in my house with an oled display) after yesterday i started to have big problems to boot the device... it is like stuck... if i umplug it and plug it again to the USB or VIN whatever it doesnt boot.
I found out that the only way i can boot it is to flash the sketch on it again with the Arduino IDE... and then it works perfectly.

any solutions?

thanks guys

- Sat Apr 29, 2017 11:03 am #65393 well
i found a fix myself
it was the pin D3
after i changed that pin and set it free the device boots fine
nodeMCU D3 is actually gpio 0

cheers

- Sun Apr 30, 2017 8:38 am #65416 This looks like you have improper boot mode on some pins ...
GPIO15 needs to be PulledDown, while GPIO2 and GPIO0 needs to be PulledUp.
(Since the board should have those resistors already in place, maybe one is broken or has a cool joint soldering.)