Lolin D1 mini Pro 2.0 - what is LDO_EN ? about d1_mini_examples HOT 3 OPEN

You can wire a switch there, to turn the module on and off.
It works perfectly.
When off, it consumes 42 μΑ only.
It's a pity this is not a proper connector.

from d1_mini_examples.

See SJ2 under Power in the schematics. It’s normally not bridged and is so you can tie the EN pin to GND.

It’s the enable signal for the LDO regulator, active high.

Add a dab of solder to bridge the pads to disable the 5V regulator, so you can provide your own power source directly to the 3v3 and GND pins. Useful for battery operations.

from d1_mini_examples.

thank you @mcauser I will try it. Still the CH340C would be powered on by the +3V3

from d1_mini_examples.