So I don't have a problem with a NodeMcu board - sketch, upload, tweek, upload, tweek, upload. So now I want to play with a 5v relay with a plugin 01. sketch, upload-> An error occurred while uploading the sketch. Unplug the board from the proto setup, plug back in, upload and it ran. Went back and tweeked and upload -> An error occurred while uploading the sketch. Now no mater what I do it won't connect. (reboot, kill/restart...). The web has several post about "ya there's a bug...". But I did get it to work, once.
Suggestions pls
Thanks