Flashing the NodeMCU - first time. - Simple steps and challenges I faced.

Flashing the NodeMCU development kit.


Since I was not getting a good response after I connected the NodeMCU to my  Mac ( 10.10.5 ) Yosemite using CoolTerm. http://freeware.the-meiers.org/

https://github.com/nodemcu/nodemcu-devkit/wiki/Getting-Started-on-OSX


I decided to try flashing the NodeMCU to get it back to life.


Note  : when using the CoolTerm -I am assuming that the right driver is installed SL USB to UART. ( follow link below)

Important : You cannot change the Port  to USB to UART from any other if the CoolTerm is connected.

You have to first disconnect it and then go to Options and then select the right driver.






Flashing the NodeMCU : Command.



After flashing which took a minute( I could see a blue light blinking on the device )

I started CoolTerm and when I connected I saw the message that Cannot Open init.lua with some garbage characters as shown above.


So, I disconnected again ( by clicking on Disconnect ) button on CoolTerm, and hit the RST.
Connected back and I got some valid characters.

The parameters were


At this point - it is a blank firmware.

So - I had to read the init.lua by following instructions as listed here.
http://www.electrodragon.com/w/ESP8266_NodeMCU_Dev_Board