The term ESP refers to any of them. The power supplied to the device is one of the most important elements for both flashing the device and for stable operation. You must ensure that the device receives sufficient power current AND appropriate voltage level to properly flash the firmware on the device. Some adapters can be switched between 3. Many serial programmers do not have a voltage regulator on board like the pictured ones.
The ESP requires at least mA, many 3. When using an external 3. A PC power supply can be a source for 3. To solder you'll of course need a soldering iron, soldering tin and some flux. If you're new to soldering check out some soldering tutorial videos while you're at it.
If you're intimidated by soldering there are 3D printed jigs available for different modules and devices. At worst, you could get away with holding the headers tightly with jumper wires in pin holes during flashing but it is not a foolproof process and flashing might fail.
You could use any kind of wire but jumper wires also called DuPont wires are more practical than soldering and desoldering. Pin headers come in male or female version. Choose according to your jumper wire connectors.
Tasmota installed from a precompiled binary needs to be configured to work with your Wi-Fi network before you can access the Tasmota web UI. Download a Tasmota firmware binary file. If you're not sure which binary is the right one for you just start with tasmota. Official release binaries can be downloaded from firmware server. Latest development branch binaries are available only from our OTA server. The latest merged development code is compiled hourly.
