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 ...

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 ...