it looks like this: for the female usb connector, look down into the end of the connector so that it is oriented like so: pin 1 is the positive (5v) terminal (which goes to the output of the 7805 ...

We don’t need level converters, and interfacing the ESP to USB TTL serial adapters becomes ... world experience — if you can drive a pin with 5V for months on end without it failing, there ...