Be able to debug the NodeMCU firmware appropriately #1
Description
The NodeMCU-Firmware contains some out-commented --print("_...") lines. Think about something how the debug output can be used usefully while not disturb the regular display data stream.
As this is only really needed for being able to debug anything, and debugging is not needed in productive use, this issue has lower priority and can be fixed continuing to use --print("_message") whenever a debug output was useful at this point. It can be then activated or deactivated by commenting it in or out.