ESP8266 Community Forum

- Thu Jan 22, 2015 4:37 am #7931 I forgot to mention I use the nodemcu flasher for windows 64bit. Have not had any flashes fail.

My 2nd ESP-01 is currently in my garage recording the temperatures. The board I have soldered up for it doesnt have anything connected to the serial lines, this board also has the same issue. I can tell as my init.lua script outputs a heap on info on boot which causes the blue led to flash alot, on a failed boot it will flash once maybe twice then nothing.

- Thu Jan 22, 2015 6:10 am #7942 If you are using the arduino and the esp8266, this is my favorite pro-mini:

http://www.aliexpress.com/item/Free-Shi ... 60088.html

It has the lm1117 vr on the board and can deliver 800ma. For most sensor apps the 8mhz, 3.3v arduino is ideal. I used it successfully with a 3.7v lipo battery hooked to raw and the esp on vcc without problems. Minimal parts!

- Thu Jan 22, 2015 1:46 pm #7963 I have also flashed the AT firmware and the boot process is OK.(the one at https://github.com/espressif/esp8266_at/)
I still get the annoying DUP! results when I ping the board.

I think this rules out the flashing process.
(software and hardware - same results on multiple versions of software and probably hardware).

- Fri Jan 23, 2015 11:33 am #8019 There is a new nodeMCU firmware released today 20150123 which fixes the boot issues.